Extracting prog: 4h19m34.784696229s Minimizing prog: 1h27m28.660973534s Simplifying prog options: 13m50.328042001s Extracting C: 5m14.008842061s Simplifying C: 0s extracting reproducer from 24 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-sendmsg$NBD_CMD_DISCONNECT detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash single: failed to extract reproducer bisect: bisecting 24 programs with base timeout 30s testing program (duration=36s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 5, 3, 7, 6, 11, 7, 5, 1, 6, 15, 2, 6, 5, 9, 11, 5, 9, 1, 6, 14, 3, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 3: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000140)={0x1, 0x0, 0x3, 0x0, 0x72fb2cc9}, 0xc) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 3: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e04"], 0x7) executing program 3: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 3: r0 = socket$alg(0x26, 0x5, 0x0) syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, &(0x7f0000001080)={0x0, 0x0, &(0x7f0000001040)={&(0x7f0000000200)=ANY=[@ANYBLOB="1c0000000203010100000001000000000400004a080001000100002a4ad0ddcd010cd9544f4cf706"], 0x1c}, 0x1, 0x0, 0x0, 0x48841}, 0x2000c010) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r1 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r1, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000), 0x0, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r1, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r2 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r2, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r2, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000180)="d80000001c0081044e81f782db44b904021d080201000000120000a118000c000600142603600e3b08000f0100810401a8001600200001400300000803600cfab94dcf5c0461c1d67ffc94007134cf6ee08000a0e408e8d8ef075c11503c13223e3f52a98516277ce06bbace8017cb090000001fb791643a5ee4001b146218a07445d6d930dfe1d9d322fe7c9fd68775730d16a4683f5aeb4edbb57a5025ccca9e00360db70100000040fad95667e006000000000000008065b44f95caae586a81ed0bffece0b42a9ecbee5de6ccd40dd68adbef3d9345", 0xd7}], 0x1, 0x0, 0x0, 0x7400}, 0x0) executing program 1: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nl802154(&(0x7f00000000c0), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_802154(r2, 0x8933, &(0x7f0000000000)={'wpan0\x00', 0x0}) sendmsg$NL802154_CMD_DEL_SEC_DEV(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000040)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r1, @ANYRES32=r3], 0x34}, 0x1, 0x0, 0x0, 0x24000894}, 0x0) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000480)={0x4c, 0x2, 0x6, 0x801, 0xe4340000, 0x0, {0x0, 0x0, 0x8}, [@IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:ip,port\x00'}, @IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_PROTOCOL={0x5}]}, 0x4c}, 0x1, 0x0, 0x0, 0x44000}, 0x2) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_ADD(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="54000000090601080000000000000000050000000900020073797a310000000005000100070000002c000780060004404e21000005000700ff0000000c000180080001400a0101010c00028008000140"], 0x54}, 0x1, 0x0, 0x0, 0x10004893}, 0x80) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_SAVE(r2, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, 0x8, 0x6, 0x201, 0x0, 0x0, {0x1, 0x0, 0xa}, [@IPSET_ATTR_PROTOCOL={0x5}]}, 0x1c}, 0x1, 0x0, 0x0, 0x8000}, 0x4084) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000400)={0x1, &(0x7f0000000000)=[{0x6}]}) socket$unix(0x1, 0x1, 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, &(0x7f0000000200)='./file1\x00', 0x40, 0x1) chdir(0x0) renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 0: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000080)={0x0, 0x1}, 0xc) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x1c1341, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f00000000c0)={'syzkaller0\x00', 0x84aebfbd6349b7f2}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000180), 0x3e7d03, 0x0) sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={0x0, 0x30}, 0x1, 0x0, 0x0, 0x4048011}, 0xc000) close(r1) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000000200)={'syzkaller0\x00', @link_local}) write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000000)=ANY=[@ANYBLOB="8fedcb7907009875f37538e486dd6317ce6203c23c00fe80000000000000875a65969ff57b00000000000000000000000000ac1414aa06"], 0xfdef) write$cgroup_subtree(r0, &(0x7f0000000000)=ANY=[], 0x66) executing program 0: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e040304"], 0x7) executing program 0: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(r0, 0x0, 0x0) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 0: r0 = socket$alg(0x26, 0x5, 0x0) r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r2 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r2, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="f78d9ca38fff48f3be52163448412ba8", 0x10}, {&(0x7f0000000140)="ebe3a0e9796cfd1647e299f4e376fdba128280b372219d205e81f4a7f71c1926aae1efd7e0054a863f3d5cfe6cb55b5bb9fa6935849e6098ed884e7cb51726b360fbb37b4fe035bbb095873048", 0x4d}, {&(0x7f00000003c0)="e8700e444d50a969ff67347cff6127e6ef12ee3819271482a4975a52c1ab9b8b4db3945d1032005eabe97b4dc33a47d3a158da988456d30026b433186f53cdcdb93a4722bf306a10470d50f5cb1ece9ead3459bab1cf1538cd0b157653c5e892962c80f158c443e9c6ad7d2a8103ef2f4b93766b9a21501f94c1568b13756b66f74f46cf801704d2da8b96c34070b233af0afcc436712e58ed25e721193af05a045ad3fdc928f02f3dbad19d3e66eebda2e63f3f46ef4511cee26d7b48241847bf9e343ef4674c45e2a085", 0xcb}], 0x3, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r2, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r3 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r3, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r3, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f00000002c0)={0x4c, 0x2, 0x6, 0x801, 0x0, 0x0, {0x0, 0x0, 0x4}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:net,net\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_PROTOCOL={0x5, 0x1, 0x6}]}, 0x4c}}, 0x0) sendmsg$IPSET_CMD_ADD(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB="50000000090601020000000000000000010000030900020073797a310000f10d0500010007000000280007800c00018008000140ac1414aa0c00148008000140ac1414100c0002800800"], 0x50}, 0x1, 0x1000000, 0x0, 0x24004800}, 0x4) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash replaying the whole log did not cause a kernel crash single: executing 1 programs separately with timeout 1m40s testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-sendmsg$NBD_CMD_DISCONNECT detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash single: failed to extract reproducer bisect: bisecting 24 programs with base timeout 1m40s testing program (duration=1m46s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 5, 3, 7, 6, 11, 7, 5, 1, 6, 15, 2, 6, 5, 9, 11, 5, 9, 1, 6, 14, 3, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 3: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000140)={0x1, 0x0, 0x3, 0x0, 0x72fb2cc9}, 0xc) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 3: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e04"], 0x7) executing program 3: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 3: r0 = socket$alg(0x26, 0x5, 0x0) syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, &(0x7f0000001080)={0x0, 0x0, &(0x7f0000001040)={&(0x7f0000000200)=ANY=[@ANYBLOB="1c0000000203010100000001000000000400004a080001000100002a4ad0ddcd010cd9544f4cf706"], 0x1c}, 0x1, 0x0, 0x0, 0x48841}, 0x2000c010) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r1 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r1, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000), 0x0, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r1, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r2 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r2, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r2, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000180)="d80000001c0081044e81f782db44b904021d080201000000120000a118000c000600142603600e3b08000f0100810401a8001600200001400300000803600cfab94dcf5c0461c1d67ffc94007134cf6ee08000a0e408e8d8ef075c11503c13223e3f52a98516277ce06bbace8017cb090000001fb791643a5ee4001b146218a07445d6d930dfe1d9d322fe7c9fd68775730d16a4683f5aeb4edbb57a5025ccca9e00360db70100000040fad95667e006000000000000008065b44f95caae586a81ed0bffece0b42a9ecbee5de6ccd40dd68adbef3d9345", 0xd7}], 0x1, 0x0, 0x0, 0x7400}, 0x0) executing program 1: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nl802154(&(0x7f00000000c0), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_802154(r2, 0x8933, &(0x7f0000000000)={'wpan0\x00', 0x0}) sendmsg$NL802154_CMD_DEL_SEC_DEV(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000040)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r1, @ANYRES32=r3], 0x34}, 0x1, 0x0, 0x0, 0x24000894}, 0x0) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000480)={0x4c, 0x2, 0x6, 0x801, 0xe4340000, 0x0, {0x0, 0x0, 0x8}, [@IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:ip,port\x00'}, @IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_PROTOCOL={0x5}]}, 0x4c}, 0x1, 0x0, 0x0, 0x44000}, 0x2) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_ADD(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="54000000090601080000000000000000050000000900020073797a310000000005000100070000002c000780060004404e21000005000700ff0000000c000180080001400a0101010c00028008000140"], 0x54}, 0x1, 0x0, 0x0, 0x10004893}, 0x80) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_SAVE(r2, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, 0x8, 0x6, 0x201, 0x0, 0x0, {0x1, 0x0, 0xa}, [@IPSET_ATTR_PROTOCOL={0x5}]}, 0x1c}, 0x1, 0x0, 0x0, 0x8000}, 0x4084) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000400)={0x1, &(0x7f0000000000)=[{0x6}]}) socket$unix(0x1, 0x1, 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, &(0x7f0000000200)='./file1\x00', 0x40, 0x1) chdir(0x0) renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 0: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000080)={0x0, 0x1}, 0xc) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x1c1341, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f00000000c0)={'syzkaller0\x00', 0x84aebfbd6349b7f2}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000180), 0x3e7d03, 0x0) sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={0x0, 0x30}, 0x1, 0x0, 0x0, 0x4048011}, 0xc000) close(r1) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000000200)={'syzkaller0\x00', @link_local}) write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000000)=ANY=[@ANYBLOB="8fedcb7907009875f37538e486dd6317ce6203c23c00fe80000000000000875a65969ff57b00000000000000000000000000ac1414aa06"], 0xfdef) write$cgroup_subtree(r0, &(0x7f0000000000)=ANY=[], 0x66) executing program 0: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e040304"], 0x7) executing program 0: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(r0, 0x0, 0x0) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 0: r0 = socket$alg(0x26, 0x5, 0x0) r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r2 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r2, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="f78d9ca38fff48f3be52163448412ba8", 0x10}, {&(0x7f0000000140)="ebe3a0e9796cfd1647e299f4e376fdba128280b372219d205e81f4a7f71c1926aae1efd7e0054a863f3d5cfe6cb55b5bb9fa6935849e6098ed884e7cb51726b360fbb37b4fe035bbb095873048", 0x4d}, {&(0x7f00000003c0)="e8700e444d50a969ff67347cff6127e6ef12ee3819271482a4975a52c1ab9b8b4db3945d1032005eabe97b4dc33a47d3a158da988456d30026b433186f53cdcdb93a4722bf306a10470d50f5cb1ece9ead3459bab1cf1538cd0b157653c5e892962c80f158c443e9c6ad7d2a8103ef2f4b93766b9a21501f94c1568b13756b66f74f46cf801704d2da8b96c34070b233af0afcc436712e58ed25e721193af05a045ad3fdc928f02f3dbad19d3e66eebda2e63f3f46ef4511cee26d7b48241847bf9e343ef4674c45e2a085", 0xcb}], 0x3, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r2, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r3 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r3, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r3, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f00000002c0)={0x4c, 0x2, 0x6, 0x801, 0x0, 0x0, {0x0, 0x0, 0x4}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:net,net\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_PROTOCOL={0x5, 0x1, 0x6}]}, 0x4c}}, 0x0) sendmsg$IPSET_CMD_ADD(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB="50000000090601020000000000000000010000030900020073797a310000f10d0500010007000000280007800c00018008000140ac1414aa0c00148008000140ac1414100c0002800800"], 0x50}, 0x1, 0x1000000, 0x0, 0x24004800}, 0x4) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash replaying the whole log did not cause a kernel crash single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-sendmsg$NBD_CMD_DISCONNECT detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash single: failed to extract reproducer bisect: bisecting 24 programs with base timeout 6m0s testing program (duration=6m6s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 5, 3, 7, 6, 11, 7, 5, 1, 6, 15, 2, 6, 5, 9, 11, 5, 9, 1, 6, 14, 3, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 3: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000140)={0x1, 0x0, 0x3, 0x0, 0x72fb2cc9}, 0xc) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 3: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e04"], 0x7) executing program 3: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 3: r0 = socket$alg(0x26, 0x5, 0x0) syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, &(0x7f0000001080)={0x0, 0x0, &(0x7f0000001040)={&(0x7f0000000200)=ANY=[@ANYBLOB="1c0000000203010100000001000000000400004a080001000100002a4ad0ddcd010cd9544f4cf706"], 0x1c}, 0x1, 0x0, 0x0, 0x48841}, 0x2000c010) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r1 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r1, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000), 0x0, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r1, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r2 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r2, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r2, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000180)="d80000001c0081044e81f782db44b904021d080201000000120000a118000c000600142603600e3b08000f0100810401a8001600200001400300000803600cfab94dcf5c0461c1d67ffc94007134cf6ee08000a0e408e8d8ef075c11503c13223e3f52a98516277ce06bbace8017cb090000001fb791643a5ee4001b146218a07445d6d930dfe1d9d322fe7c9fd68775730d16a4683f5aeb4edbb57a5025ccca9e00360db70100000040fad95667e006000000000000008065b44f95caae586a81ed0bffece0b42a9ecbee5de6ccd40dd68adbef3d9345", 0xd7}], 0x1, 0x0, 0x0, 0x7400}, 0x0) executing program 1: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nl802154(&(0x7f00000000c0), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_802154(r2, 0x8933, &(0x7f0000000000)={'wpan0\x00', 0x0}) sendmsg$NL802154_CMD_DEL_SEC_DEV(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000040)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r1, @ANYRES32=r3], 0x34}, 0x1, 0x0, 0x0, 0x24000894}, 0x0) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000480)={0x4c, 0x2, 0x6, 0x801, 0xe4340000, 0x0, {0x0, 0x0, 0x8}, [@IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:ip,port\x00'}, @IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_PROTOCOL={0x5}]}, 0x4c}, 0x1, 0x0, 0x0, 0x44000}, 0x2) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_ADD(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="54000000090601080000000000000000050000000900020073797a310000000005000100070000002c000780060004404e21000005000700ff0000000c000180080001400a0101010c00028008000140"], 0x54}, 0x1, 0x0, 0x0, 0x10004893}, 0x80) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_SAVE(r2, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, 0x8, 0x6, 0x201, 0x0, 0x0, {0x1, 0x0, 0xa}, [@IPSET_ATTR_PROTOCOL={0x5}]}, 0x1c}, 0x1, 0x0, 0x0, 0x8000}, 0x4084) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000400)={0x1, &(0x7f0000000000)=[{0x6}]}) socket$unix(0x1, 0x1, 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, &(0x7f0000000200)='./file1\x00', 0x40, 0x1) chdir(0x0) renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 0: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000080)={0x0, 0x1}, 0xc) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x1c1341, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f00000000c0)={'syzkaller0\x00', 0x84aebfbd6349b7f2}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000180), 0x3e7d03, 0x0) sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={0x0, 0x30}, 0x1, 0x0, 0x0, 0x4048011}, 0xc000) close(r1) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000000200)={'syzkaller0\x00', @link_local}) write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000000)=ANY=[@ANYBLOB="8fedcb7907009875f37538e486dd6317ce6203c23c00fe80000000000000875a65969ff57b00000000000000000000000000ac1414aa06"], 0xfdef) write$cgroup_subtree(r0, &(0x7f0000000000)=ANY=[], 0x66) executing program 0: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e040304"], 0x7) executing program 0: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(r0, 0x0, 0x0) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 0: r0 = socket$alg(0x26, 0x5, 0x0) r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r2 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r2, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="f78d9ca38fff48f3be52163448412ba8", 0x10}, {&(0x7f0000000140)="ebe3a0e9796cfd1647e299f4e376fdba128280b372219d205e81f4a7f71c1926aae1efd7e0054a863f3d5cfe6cb55b5bb9fa6935849e6098ed884e7cb51726b360fbb37b4fe035bbb095873048", 0x4d}, {&(0x7f00000003c0)="e8700e444d50a969ff67347cff6127e6ef12ee3819271482a4975a52c1ab9b8b4db3945d1032005eabe97b4dc33a47d3a158da988456d30026b433186f53cdcdb93a4722bf306a10470d50f5cb1ece9ead3459bab1cf1538cd0b157653c5e892962c80f158c443e9c6ad7d2a8103ef2f4b93766b9a21501f94c1568b13756b66f74f46cf801704d2da8b96c34070b233af0afcc436712e58ed25e721193af05a045ad3fdc928f02f3dbad19d3e66eebda2e63f3f46ef4511cee26d7b48241847bf9e343ef4674c45e2a085", 0xcb}], 0x3, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r2, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r3 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r3, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r3, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f00000002c0)={0x4c, 0x2, 0x6, 0x801, 0x0, 0x0, {0x0, 0x0, 0x4}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:net,net\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_PROTOCOL={0x5, 0x1, 0x6}]}, 0x4c}}, 0x0) sendmsg$IPSET_CMD_ADD(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB="50000000090601020000000000000000010000030900020073797a310000f10d0500010007000000280007800c00018008000140ac1414aa0c00148008000140ac1414100c0002800800"], 0x50}, 0x1, 0x1000000, 0x0, 0x24004800}, 0x4) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open bisect: bisecting 24 programs bisect: split chunks (needed=false): <23> bisect: split chunk #0 of len 23 into 3 parts bisect: testing without sub-chunk 1/3 testing program (duration=6m4s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 1, 6, 15, 2, 6, 5, 9, 11, 5, 9, 1, 6, 14, 3, 7] detailed listing: executing program 3: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000140)={0x1, 0x0, 0x3, 0x0, 0x72fb2cc9}, 0xc) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 3: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e04"], 0x7) executing program 3: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 3: r0 = socket$alg(0x26, 0x5, 0x0) syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) sendmsg$NFQNL_MSG_CONFIG(0xffffffffffffffff, &(0x7f0000001080)={0x0, 0x0, &(0x7f0000001040)={&(0x7f0000000200)=ANY=[@ANYBLOB="1c0000000203010100000001000000000400004a080001000100002a4ad0ddcd010cd9544f4cf706"], 0x1c}, 0x1, 0x0, 0x0, 0x48841}, 0x2000c010) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r1 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r1, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000), 0x0, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r1, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r2 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r2, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r2, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000180)="d80000001c0081044e81f782db44b904021d080201000000120000a118000c000600142603600e3b08000f0100810401a8001600200001400300000803600cfab94dcf5c0461c1d67ffc94007134cf6ee08000a0e408e8d8ef075c11503c13223e3f52a98516277ce06bbace8017cb090000001fb791643a5ee4001b146218a07445d6d930dfe1d9d322fe7c9fd68775730d16a4683f5aeb4edbb57a5025ccca9e00360db70100000040fad95667e006000000000000008065b44f95caae586a81ed0bffece0b42a9ecbee5de6ccd40dd68adbef3d9345", 0xd7}], 0x1, 0x0, 0x0, 0x7400}, 0x0) executing program 1: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, 0x0, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nl802154(&(0x7f00000000c0), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_802154(r2, 0x8933, &(0x7f0000000000)={'wpan0\x00', 0x0}) sendmsg$NL802154_CMD_DEL_SEC_DEV(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000040)=ANY=[@ANYBLOB='4\x00\x00\x00', @ANYRES16=r1, @ANYRES32=r3], 0x34}, 0x1, 0x0, 0x0, 0x24000894}, 0x0) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000480)={0x4c, 0x2, 0x6, 0x801, 0xe4340000, 0x0, {0x0, 0x0, 0x8}, [@IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:ip,port\x00'}, @IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_PROTOCOL={0x5}]}, 0x4c}, 0x1, 0x0, 0x0, 0x44000}, 0x2) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_ADD(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000001c0)=ANY=[@ANYBLOB="54000000090601080000000000000000050000000900020073797a310000000005000100070000002c000780060004404e21000005000700ff0000000c000180080001400a0101010c00028008000140"], 0x54}, 0x1, 0x0, 0x0, 0x10004893}, 0x80) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_SAVE(r2, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000080)={0x1c, 0x8, 0x6, 0x201, 0x0, 0x0, {0x1, 0x0, 0xa}, [@IPSET_ATTR_PROTOCOL={0x5}]}, 0x1c}, 0x1, 0x0, 0x0, 0x8000}, 0x4084) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000400)={0x1, &(0x7f0000000000)=[{0x6}]}) socket$unix(0x1, 0x1, 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, &(0x7f0000000200)='./file1\x00', 0x40, 0x1) chdir(0x0) renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 0: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000080)={0x0, 0x1}, 0xc) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x1c1341, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f00000000c0)={'syzkaller0\x00', 0x84aebfbd6349b7f2}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000180), 0x3e7d03, 0x0) sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={0x0, 0x30}, 0x1, 0x0, 0x0, 0x4048011}, 0xc000) close(r1) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000000200)={'syzkaller0\x00', @link_local}) write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000000)=ANY=[@ANYBLOB="8fedcb7907009875f37538e486dd6317ce6203c23c00fe80000000000000875a65969ff57b00000000000000000000000000ac1414aa06"], 0xfdef) write$cgroup_subtree(r0, &(0x7f0000000000)=ANY=[], 0x66) executing program 0: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e040304"], 0x7) executing program 0: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(r0, 0x0, 0x0) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 0: r0 = socket$alg(0x26, 0x5, 0x0) r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r2 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r2, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="f78d9ca38fff48f3be52163448412ba8", 0x10}, {&(0x7f0000000140)="ebe3a0e9796cfd1647e299f4e376fdba128280b372219d205e81f4a7f71c1926aae1efd7e0054a863f3d5cfe6cb55b5bb9fa6935849e6098ed884e7cb51726b360fbb37b4fe035bbb095873048", 0x4d}, {&(0x7f00000003c0)="e8700e444d50a969ff67347cff6127e6ef12ee3819271482a4975a52c1ab9b8b4db3945d1032005eabe97b4dc33a47d3a158da988456d30026b433186f53cdcdb93a4722bf306a10470d50f5cb1ece9ead3459bab1cf1538cd0b157653c5e892962c80f158c443e9c6ad7d2a8103ef2f4b93766b9a21501f94c1568b13756b66f74f46cf801704d2da8b96c34070b233af0afcc436712e58ed25e721193af05a045ad3fdc928f02f3dbad19d3e66eebda2e63f3f46ef4511cee26d7b48241847bf9e343ef4674c45e2a085", 0xcb}], 0x3, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r2, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r3 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r3, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r3, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f00000002c0)={0x4c, 0x2, 0x6, 0x801, 0x0, 0x0, {0x0, 0x0, 0x4}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:net,net\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_PROTOCOL={0x5, 0x1, 0x6}]}, 0x4c}}, 0x0) sendmsg$IPSET_CMD_ADD(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB="50000000090601020000000000000000010000030900020073797a310000f10d0500010007000000280007800c00018008000140ac1414aa0c00148008000140ac1414100c0002800800"], 0x50}, 0x1, 0x1000000, 0x0, 0x24004800}, 0x4) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: testing without sub-chunk 2/3 testing program (duration=6m4s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 5, 3, 7, 6, 11, 7, 11, 5, 9, 1, 6, 14, 3, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, &(0x7f0000000200)='./file1\x00', 0x40, 0x1) chdir(0x0) renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 0: r0 = socket(0xa, 0x3, 0x3a) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, &(0x7f0000000080)={0x0, 0x1}, 0xc) setsockopt$MRT6_ADD_MIF(r0, 0x29, 0xca, 0x0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000340)='net/ip6_mr_cache\x00') preadv(r1, &(0x7f0000000300)=[{&(0x7f00000000c0)=""/107, 0x6b}], 0x1, 0x6, 0x0) executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x1c1341, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f00000000c0)={'syzkaller0\x00', 0x84aebfbd6349b7f2}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000180), 0x3e7d03, 0x0) sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={0x0, 0x30}, 0x1, 0x0, 0x0, 0x4048011}, 0xc000) close(r1) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000000200)={'syzkaller0\x00', @link_local}) write$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000000)=ANY=[@ANYBLOB="8fedcb7907009875f37538e486dd6317ce6203c23c00fe80000000000000875a65969ff57b00000000000000000000000000ac1414aa06"], 0xfdef) write$cgroup_subtree(r0, &(0x7f0000000000)=ANY=[], 0x66) executing program 0: syz_emit_vhci(&(0x7f0000001280)=ANY=[@ANYBLOB="040e040304"], 0x7) executing program 0: r0 = socket$l2tp(0x2, 0x2, 0x73) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(r0, 0x0, 0x0) connect$inet(r0, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(r0, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 0: r0 = socket$alg(0x26, 0x5, 0x0) r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff) sendmsg$NL80211_CMD_FRAME(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000006c0)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000000000000200000008000300", @ANYRES32, @ANYBLOB="0c00990041000000600000000800a0147c030000080026009a03000008009f"], 0x40}}, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, &(0x7f0000000640)=ANY=[@ANYBLOB="736563757216ae2c697479"], 0x0) bind$alg(r0, &(0x7f0000000380)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc-cast5-avx\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000280)="2c235aa9c5", 0x5) sendmsg$IPSET_CMD_CREATE(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f00000002c0)={0x10, 0x0, 0x0, 0x8000000}, 0xc, &(0x7f0000000300)={&(0x7f0000000680)=ANY=[@ANYBLOB="600000000206010100105bebbd63f4000000000000000a0000080d000300686173683a6d61630000000015000300686173683a69702c706f72742c6e6574000000000500000a000000050004000200000011000300686173683a69702c6d61"], 0x60}, 0x1, 0x0, 0x0, 0x20044844}, 0x20000014) ioctl$SNDRV_TIMER_IOCTL_GINFO(0xffffffffffffffff, 0x5452, &(0x7f0000000240)={{0xffffffffffffffff, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 'id0\x00', 'timer0\x00', 0x0, 0xfffffffffffffffc}) r2 = accept4(r0, 0x0, 0x0, 0x800) sendmmsg$alg(r2, &(0x7f0000000040)=[{0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="f78d9ca38fff48f3be52163448412ba8", 0x10}, {&(0x7f0000000140)="ebe3a0e9796cfd1647e299f4e376fdba128280b372219d205e81f4a7f71c1926aae1efd7e0054a863f3d5cfe6cb55b5bb9fa6935849e6098ed884e7cb51726b360fbb37b4fe035bbb095873048", 0x4d}, {&(0x7f00000003c0)="e8700e444d50a969ff67347cff6127e6ef12ee3819271482a4975a52c1ab9b8b4db3945d1032005eabe97b4dc33a47d3a158da988456d30026b433186f53cdcdb93a4722bf306a10470d50f5cb1ece9ead3459bab1cf1538cd0b157653c5e892962c80f158c443e9c6ad7d2a8103ef2f4b93766b9a21501f94c1568b13756b66f74f46cf801704d2da8b96c34070b233af0afcc436712e58ed25e721193af05a045ad3fdc928f02f3dbad19d3e66eebda2e63f3f46ef4511cee26d7b48241847bf9e343ef4674c45e2a085", 0xcb}], 0x3, &(0x7f0000000380)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}], 0x1, 0x40800) recvmsg(r2, &(0x7f00000005c0)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000000c0)=""/81, 0x7ffff000}, {&(0x7f0000000200)=""/83, 0x20000253}], 0x2}, 0x0) r3 = syz_usb_connect(0x0, 0x4a, &(0x7f0000000040)=ANY=[@ANYBLOB="120100005520f010402038b1420104000001090238000100000000090400000371055900090582eb1000000001020009050276"], 0x0) syz_usb_control_io$cdc_ecm(r3, &(0x7f0000000140)={0x14, 0x0, &(0x7f0000000100)={0x0, 0x3, 0x1a, {0x1a}}}, 0x0) syz_usb_ep_write$ath9k_ep1(r3, 0x82, 0xc38, &(0x7f0000000dc0)=ANY=[]) executing program 1: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f00000002c0)={0x4c, 0x2, 0x6, 0x801, 0x0, 0x0, {0x0, 0x0, 0x4}, [@IPSET_ATTR_SETNAME={0x9, 0x2, 'syz1\x00'}, @IPSET_ATTR_REVISION={0x5}, @IPSET_ATTR_TYPENAME={0x11, 0x3, 'hash:net,net\x00'}, @IPSET_ATTR_FAMILY={0x5, 0x5, 0x2}, @IPSET_ATTR_PROTOCOL={0x5, 0x1, 0x6}]}, 0x4c}}, 0x0) sendmsg$IPSET_CMD_ADD(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000340)=ANY=[@ANYBLOB="50000000090601020000000000000000010000030900020073797a310000f10d0500010007000000280007800c00018008000140ac1414aa0c00148008000140ac1414100c0002800800"], 0x50}, 0x1, 0x1000000, 0x0, 0x24004800}, 0x4) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open bisect: the chunk can be dropped bisect: testing without sub-chunk 3/3 testing program (duration=6m2s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 5, 3, 7, 6, 11, 7, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open bisect: the chunk can be dropped bisect: split chunks (needed=true): <8> bisect: split chunk #0 of len 8 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [7, 6, 11, 7, 7] detailed listing: executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 5, 3, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: split chunks (needed=true): <4>, <4> bisect: split chunk #0 of len 4 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 3, 7, 6, 11, 7, 7] detailed listing: executing program 2: setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='wlan0\x00', 0x10) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @remote}, 0x10) connect$inet(0xffffffffffffffff, &(0x7f0000000200)={0x2, 0x0, @local}, 0x10) sendmmsg$inet(0xffffffffffffffff, &(0x7f0000000900)=[{{0x0, 0x0, 0x0}}], 0x40000cf, 0x0) setsockopt$inet_opts(0xffffffffffffffff, 0x0, 0x1, &(0x7f00000000c0)='J', 0x1) executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'cryptd(streebog256-generic)\x00'}, 0x58) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 7, 6, 11, 7, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open bisect: the chunk can be dropped bisect: split chunk #1 of len 4 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 11, 7, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x42, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x1) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f0000000400)={[{@upperdir={'upperdir', 0x3d, './file1'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@workdir={'workdir', 0x3d, './bus'}}, {@metacopy_on}]}) r0 = open(&(0x7f0000000040)='./file0\x00', 0x400, 0x43) mknodat$loop(r0, 0x0, 0x40, 0x1) chdir(&(0x7f00000003c0)='./bus\x00') renameat2(0xffffffffffffff9c, &(0x7f0000000a00)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000600)='./file1\x00', 0x2) mkdirat(0xffffffffffffff9c, &(0x7f0000000540)='./file7\x00', 0x1c0) renameat2(0xffffffffffffff9c, &(0x7f0000000780)='./file0\x00', 0xffffffffffffff9c, &(0x7f0000000000)='./file7/file0\x00', 0x1) executing program 3: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 8, 7, 6, 7] detailed listing: executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) socket$alg(0x26, 0x5, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open bisect: the chunk can be dropped bisect: split chunks (needed=true): <2>, <2> bisect: split chunk #0 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [8, 7, 6, 7] detailed listing: executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunk #1 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [8, 6, 7] detailed listing: executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [8, 7, 7] detailed listing: executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash bisect: split chunks (needed=true): <1>, <1>, <1> bisect: split chunk #0 of len 1 into 2 parts bisect: no way to further split the chunk bisect: split chunk #1 of len 1 into 2 parts bisect: no way to further split the chunk bisect: split chunk #2 of len 1 into 2 parts bisect: no way to further split the chunk bisect: 4 programs left: executing program 2: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) bisect: trying to concatenate bisect: concatenate 4 entries minimizing program #0 before concatenation testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [7, 7, 6, 7] detailed listing: executing program 0: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) syz_usb_ep_write$ath9k_ep1(r0, 0x82, 0x108, &(0x7f0000001500)=ANY=[@ANYBLOB="0201"]) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 7, 6, 7] detailed listing: executing program 0: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io(r1, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 7, 6, 7] detailed listing: executing program 0: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 7, 6, 7] detailed listing: executing program 0: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) r1 = syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) syz_usb_control_io(r1, &(0x7f0000000140)={0x2c, 0x0, &(0x7f0000000240)=ANY=[], 0x0, 0x0, 0x0}, 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 7, 6, 7] detailed listing: executing program 0: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) syz_usb_connect$uac1(0x0, 0xac, &(0x7f0000000180)=ANY=[], 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [2, 7, 6, 7] detailed listing: executing program 0: r0 = syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_usb_disconnect(r0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 7, 6, 7] detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [0, 7, 6, 7] detailed listing: executing program 0: executing program 2: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r2, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r3}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, 0x0, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash minimized 8 calls -> 1 calls minimizing program #1 before concatenation testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 6, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 5, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 5, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 5, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, 0x0, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 5, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r0, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 5, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000040)='cgroup.freeze\x00', 0x275a, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 6, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_RECONFIGURE(r2, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000180)={0x38, r0, 0x1, 0x70bd2b, 0x25dfdbff, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x8000}, @NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}]}, 0x38}, 0x1, 0x0, 0x0, 0xe256610c62001369}, 0x600000c0) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open minimized 7 calls -> 4 calls minimizing program #2 before concatenation testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 5, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 0: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 4, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 0: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) r1 = syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) ioctl$NBD_CLEAR_SOCK(r1, 0xab04) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 3, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 0: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 2, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 0: r0 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000300)={0x30, r0, 0x1, 0x70bd25, 0x25dfdbfd, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x5}]}, 0x30}, 0x1, 0x0, 0x0, 0x4010}, 0x40040) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 2, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 0: syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 7] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 0: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 1: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r3, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r4}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) sendmsg$NBD_CMD_DISCONNECT(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x1c, r1, 0x1, 0x70bd27, 0x25dfdbfc, {}, [@NBD_ATTR_INDEX={0x8, 0x1, 0x0}]}, 0x1c}, 0x1, 0x0, 0x0, 0x24040090}, 0xc0) program crashed: INFO: task hung in bdev_open minimized 6 calls -> 1 calls minimizing program #3 before concatenation testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 6] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 5] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 4] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 4] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) program crashed: INFO: task hung in bdev_open testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 3] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 3] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) program did not crash testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 4, 1, 3] detailed listing: executing program 2: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) executing program 2: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) executing program 2: syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) executing program 0: syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) program crashed: INFO: task hung in bdev_open minimized 7 calls -> 3 calls testing program (duration=9m1.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb-syz_genetlink_get_family_id$nbd-syz_init_net_socket$nl_generic-socketpair$nbd detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) program crashed: INFO: task hung in bdev_release bisect: concatenation succeeded found reproducer with 9 syscalls minimizing guilty program testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb-syz_genetlink_get_family_id$nbd-syz_init_net_socket$nl_generic detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) program crashed: INFO: task hung in bdev_release testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb-syz_genetlink_get_family_id$nbd detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) syz_genetlink_get_family_id$nbd(&(0x7f0000000380), 0xffffffffffffffff) program crashed: INFO: task hung in bdev_release testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program crashed: INFO: task hung in bdev_open testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-syz_open_dev$ndb detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_init_net_socket$nl_generic-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, 0x0, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: syz_usb_connect(0x3, 0x2d, &(0x7f0000000100)=ANY=[@ANYBLOB="120100004898b610c2154100201f0102030109021b0001000500ea09040002018c78fd00090582f3c6"], 0x0) r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r0, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r1}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program crashed: INFO: task hung in bdev_open testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, 0x0}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={0x0}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x14, r1, 0x1, 0xffffffff}, 0x14}}, 0x20000000) syz_open_dev$ndb(&(0x7f0000000200), 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(0x0, 0x0, 0x80000) program crashed: INFO: task hung in read_part_sector extracting C reproducer testing compiled C program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m12.905493322s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(0x0, 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(0x0, 0x0, 0x80000) program did not crash testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(0x0, 0x0, 0x80000) program crashed: INFO: task hung in read_part_sector validation run: crashed=true testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(0x0, 0x0, 0x80000) program crashed: INFO: task hung in read_part_sector validation run: crashed=true testing program (duration=6m12.905493322s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT-syz_open_dev$ndb detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f00000000c0)={0x38, r1, 0x1, 0xffffffff, 0x0, {}, [@NBD_ATTR_SOCKETS={0x10, 0x7, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, {0x8, 0x1, r2}}]}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x7fff}]}, 0x38}}, 0x20000000) syz_open_dev$ndb(0x0, 0x0, 0x80000) program crashed: INFO: task hung in read_part_sector validation run: crashed=true reproducing took 6h25m19.261907972s repro crashed as (corrupted=false): INFO: task udevd:5865 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:22464 pid:5865 tgid:5865 ppid:5198 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 io_schedule+0x7f/0xd0 kernel/sched/core.c:7831 folio_wait_bit_common+0x6d8/0xbc0 mm/filemap.c:1323 folio_put_wait_locked mm/filemap.c:1492 [inline] do_read_cache_folio+0x1ad/0x590 mm/filemap.c:4083 read_mapping_folio include/linux/pagemap.h:1028 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:723 adfspart_check_POWERTEC+0x92/0xef0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:142 [inline] blk_add_partitions block/partitions/core.c:590 [inline] bdev_disk_changed+0x7ba/0x1550 block/partitions/core.c:694 blkdev_get_whole+0x380/0x510 block/bdev.c:764 bdev_open+0x31e/0xd30 block/bdev.c:973 blkdev_open+0x470/0x610 block/fops.c:698 do_dentry_open+0x785/0x14e0 fs/open.c:949 vfs_open+0x3b/0x340 fs/open.c:1081 do_open fs/namei.c:4671 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4830 do_file_open+0x23e/0x4a0 fs/namei.c:4859 do_sys_openat2+0x113/0x200 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6dbe6a7407 RSP: 002b:00007ffe0615c4d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f6dbee75880 RCX: 00007f6dbe6a7407 RDX: 00000000000a0800 RSI: 00005641a4a312d0 RDI: ffffffffffffff9c RBP: 00005641a4a30910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00005641a4a57880 R13: 00005641a4a3e190 R14: 0000000000000000 R15: 00005641a4a57880 INFO: task udevd:5876 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:22464 pid:5876 tgid:5876 ppid:5198 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 io_schedule+0x7f/0xd0 kernel/sched/core.c:7831 folio_wait_bit_common+0x6d8/0xbc0 mm/filemap.c:1323 folio_put_wait_locked mm/filemap.c:1492 [inline] do_read_cache_folio+0x1ad/0x590 mm/filemap.c:4083 read_mapping_folio include/linux/pagemap.h:1028 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:723 adfspart_check_POWERTEC+0x92/0xef0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:142 [inline] blk_add_partitions block/partitions/core.c:590 [inline] bdev_disk_changed+0x7ba/0x1550 block/partitions/core.c:694 blkdev_get_whole+0x380/0x510 block/bdev.c:764 bdev_open+0x31e/0xd30 block/bdev.c:973 blkdev_open+0x470/0x610 block/fops.c:698 do_dentry_open+0x785/0x14e0 fs/open.c:949 vfs_open+0x3b/0x340 fs/open.c:1081 do_open fs/namei.c:4671 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4830 do_file_open+0x23e/0x4a0 fs/namei.c:4859 do_sys_openat2+0x113/0x200 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6dbe6a7407 RSP: 002b:00007ffe0615c4d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f6dbee75880 RCX: 00007f6dbe6a7407 RDX: 00000000000a0800 RSI: 00005641a4a3c860 RDI: ffffffffffffff9c RBP: 00005641a4a30910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00005641a4a4df10 R13: 00005641a4a3e190 R14: 0000000000000000 R15: 00005641a4a4df10 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e9602e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline] #0: ffffffff8e9602e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline] #0: ffffffff8e9602e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 2 locks held by getty/5585: #0: ffff888036fc90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0 drivers/tty/n_tty.c:2211 2 locks held by syz-execprog/5847: #0: ffff8880b853ade0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 kernel/sched/core.c:647 #1: ffff8880b8524588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933 1 lock held by udevd/5865: #0: ffff888027317358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 block/bdev.c:961 1 lock held by udevd/5876: #0: ffff888027313358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 block/bdev.c:961 5 locks held by syz-executor/4099: #0: ffff88807ff28ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:500 [inline] #0: ffff88807ff28ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x5a0 net/bluetooth/hci_core.c:2716 #1: ffff88807ff280c0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x640/0x10e0 net/bluetooth/hci_sync.c:5346 #2: ffffffff8ff7cfa8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2151 [inline] #2: ffffffff8ff7cfa8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x260 net/bluetooth/hci_conn.c:2644 #3: ffff888077f2b2f8 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x7b/0x5c0 net/bluetooth/l2cap_core.c:1755 #4: ffffffff8e966578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline] #4: ffffffff8e966578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770 kernel/rcu/tree_exp.h:961 1 lock held by syz.3.16858/9364: 2 locks held by syz.0.16857/9369: 2 locks held by syz.2.16859/9368: 2 locks held by modprobe/9371: ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline] watchdog+0xfd9/0x1030 kernel/hung_task.c:515 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9336 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:crng_make_state+0x1/0x600 drivers/char/random.c:340 Code: e0 08 00 00 48 c7 c7 80 15 3a 8c 4c 89 f6 e8 46 e8 d7 fb e9 d1 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 28 48 89 54 24 10 48 89 74 24 RSP: 0018:ffffc90000a08990 EFLAGS: 00000002 RAX: ffffc90000a08a20 RBX: 0000000000000060 RCX: 0000000000000000 RDX: 0000000000000020 RSI: ffff8880b8536bd0 RDI: ffffc90000a089c0 RBP: ffffc90000a08ad0 R08: ffffc90000a08a5f R09: 0000000000000000 R10: ffffc90000a08a20 R11: fffff5200014114c R12: 1ffff92000141134 R13: 0000000000000020 R14: ffff8880b8536bd0 R15: f8f8f8f8f8f8f8f8 FS: 0000555555856500(0000) GS:ffff888125102000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed4d786e80 CR3: 0000000047868000 CR4: 00000000003526f0 Call Trace: _get_random_bytes+0xff/0x260 drivers/char/random.c:406 get_random_u32+0x2d1/0x8b0 drivers/char/random.c:554 __get_random_u32_below+0x14/0x90 drivers/char/random.c:568 get_random_u32_below include/linux/random.h:63 [inline] mrp_join_timer_arm net/802/mrp.c:596 [inline] mrp_join_timer+0x5b0/0x7f0 net/802/mrp.c:612 call_timer_fn+0x192/0x640 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404 handle_softirqs+0x22a/0x870 kernel/softirq.c:626 __do_softirq kernel/softirq.c:660 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline] RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2478 Code: 0f 84 44 ff ff ff e8 b2 2c 21 00 fb eb 44 e8 aa 2c 21 00 e8 d5 0c 16 0a 4d 85 f6 74 94 e8 9b 2c 21 00 fb 48 c7 c7 20 27 95 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 cb 16 RSP: 0018:ffffc9000211ef20 EFLAGS: 00000293 RAX: ffffffff81a4c5c5 RBX: ffffffff81a4c43f RCX: ffff888051d83c80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e952720 RBP: ffffc9000211efd0 R08: ffffffff9033c4b7 R09: 1ffffffff2067896 R10: dffffc0000000000 R11: fffffbfff2067897 R12: 0000000000000000 R13: 0000000000000033 R14: 0000000000000200 R15: 1ffff92000423de8 _printk+0xdd/0x130 kernel/printk/printk.c:2504 caif_netlink_parms net/caif/chnl_net.c:424 [inline] ipcaif_newlink+0x1f4/0x4e0 net/caif/chnl_net.c:450 rtnl_newlink_create+0x329/0xb70 net/core/rtnetlink.c:3840 __rtnl_newlink net/core/rtnetlink.c:3957 [inline] rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4072 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737 __sock_sendmsg net/socket.c:752 [inline] __sys_sendto+0x3ff/0x590 net/socket.c:2221 __do_sys_sendto net/socket.c:2228 [inline] __se_sys_sendto net/socket.c:2224 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2224 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1dda55c84e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffc5ed70d18 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000555555856500 RCX: 00007f1dda55c84e RDX: 0000000000000048 RSI: 00007f1ddb344670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffc5ed70d94 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f1ddb344670 R15: 0000000000000000 final repro crashed as (corrupted=false): INFO: task udevd:5865 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:22464 pid:5865 tgid:5865 ppid:5198 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 io_schedule+0x7f/0xd0 kernel/sched/core.c:7831 folio_wait_bit_common+0x6d8/0xbc0 mm/filemap.c:1323 folio_put_wait_locked mm/filemap.c:1492 [inline] do_read_cache_folio+0x1ad/0x590 mm/filemap.c:4083 read_mapping_folio include/linux/pagemap.h:1028 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:723 adfspart_check_POWERTEC+0x92/0xef0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:142 [inline] blk_add_partitions block/partitions/core.c:590 [inline] bdev_disk_changed+0x7ba/0x1550 block/partitions/core.c:694 blkdev_get_whole+0x380/0x510 block/bdev.c:764 bdev_open+0x31e/0xd30 block/bdev.c:973 blkdev_open+0x470/0x610 block/fops.c:698 do_dentry_open+0x785/0x14e0 fs/open.c:949 vfs_open+0x3b/0x340 fs/open.c:1081 do_open fs/namei.c:4671 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4830 do_file_open+0x23e/0x4a0 fs/namei.c:4859 do_sys_openat2+0x113/0x200 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6dbe6a7407 RSP: 002b:00007ffe0615c4d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f6dbee75880 RCX: 00007f6dbe6a7407 RDX: 00000000000a0800 RSI: 00005641a4a312d0 RDI: ffffffffffffff9c RBP: 00005641a4a30910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00005641a4a57880 R13: 00005641a4a3e190 R14: 0000000000000000 R15: 00005641a4a57880 INFO: task udevd:5876 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:22464 pid:5876 tgid:5876 ppid:5198 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 io_schedule+0x7f/0xd0 kernel/sched/core.c:7831 folio_wait_bit_common+0x6d8/0xbc0 mm/filemap.c:1323 folio_put_wait_locked mm/filemap.c:1492 [inline] do_read_cache_folio+0x1ad/0x590 mm/filemap.c:4083 read_mapping_folio include/linux/pagemap.h:1028 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:723 adfspart_check_POWERTEC+0x92/0xef0 block/partitions/acorn.c:454 check_partition block/partitions/core.c:142 [inline] blk_add_partitions block/partitions/core.c:590 [inline] bdev_disk_changed+0x7ba/0x1550 block/partitions/core.c:694 blkdev_get_whole+0x380/0x510 block/bdev.c:764 bdev_open+0x31e/0xd30 block/bdev.c:973 blkdev_open+0x470/0x610 block/fops.c:698 do_dentry_open+0x785/0x14e0 fs/open.c:949 vfs_open+0x3b/0x340 fs/open.c:1081 do_open fs/namei.c:4671 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4830 do_file_open+0x23e/0x4a0 fs/namei.c:4859 do_sys_openat2+0x113/0x200 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6dbe6a7407 RSP: 002b:00007ffe0615c4d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f6dbee75880 RCX: 00007f6dbe6a7407 RDX: 00000000000a0800 RSI: 00005641a4a3c860 RDI: ffffffffffffff9c RBP: 00005641a4a30910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00005641a4a4df10 R13: 00005641a4a3e190 R14: 0000000000000000 R15: 00005641a4a4df10 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e9602e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline] #0: ffffffff8e9602e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline] #0: ffffffff8e9602e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 2 locks held by getty/5585: #0: ffff888036fc90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0 drivers/tty/n_tty.c:2211 2 locks held by syz-execprog/5847: #0: ffff8880b853ade0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 kernel/sched/core.c:647 #1: ffff8880b8524588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933 1 lock held by udevd/5865: #0: ffff888027317358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 block/bdev.c:961 1 lock held by udevd/5876: #0: ffff888027313358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 block/bdev.c:961 5 locks held by syz-executor/4099: #0: ffff88807ff28ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:500 [inline] #0: ffff88807ff28ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x5a0 net/bluetooth/hci_core.c:2716 #1: ffff88807ff280c0 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x640/0x10e0 net/bluetooth/hci_sync.c:5346 #2: ffffffff8ff7cfa8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2151 [inline] #2: ffffffff8ff7cfa8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x260 net/bluetooth/hci_conn.c:2644 #3: ffff888077f2b2f8 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x7b/0x5c0 net/bluetooth/l2cap_core.c:1755 #4: ffffffff8e966578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline] #4: ffffffff8e966578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770 kernel/rcu/tree_exp.h:961 1 lock held by syz.3.16858/9364: 2 locks held by syz.0.16857/9369: 2 locks held by syz.2.16859/9368: 2 locks held by modprobe/9371: ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline] watchdog+0xfd9/0x1030 kernel/hung_task.c:515 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9336 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:crng_make_state+0x1/0x600 drivers/char/random.c:340 Code: e0 08 00 00 48 c7 c7 80 15 3a 8c 4c 89 f6 e8 46 e8 d7 fb e9 d1 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 28 48 89 54 24 10 48 89 74 24 RSP: 0018:ffffc90000a08990 EFLAGS: 00000002 RAX: ffffc90000a08a20 RBX: 0000000000000060 RCX: 0000000000000000 RDX: 0000000000000020 RSI: ffff8880b8536bd0 RDI: ffffc90000a089c0 RBP: ffffc90000a08ad0 R08: ffffc90000a08a5f R09: 0000000000000000 R10: ffffc90000a08a20 R11: fffff5200014114c R12: 1ffff92000141134 R13: 0000000000000020 R14: ffff8880b8536bd0 R15: f8f8f8f8f8f8f8f8 FS: 0000555555856500(0000) GS:ffff888125102000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed4d786e80 CR3: 0000000047868000 CR4: 00000000003526f0 Call Trace: _get_random_bytes+0xff/0x260 drivers/char/random.c:406 get_random_u32+0x2d1/0x8b0 drivers/char/random.c:554 __get_random_u32_below+0x14/0x90 drivers/char/random.c:568 get_random_u32_below include/linux/random.h:63 [inline] mrp_join_timer_arm net/802/mrp.c:596 [inline] mrp_join_timer+0x5b0/0x7f0 net/802/mrp.c:612 call_timer_fn+0x192/0x640 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2373 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2385 run_timer_base kernel/time/timer.c:2394 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404 handle_softirqs+0x22a/0x870 kernel/softirq.c:626 __do_softirq kernel/softirq.c:660 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline] RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2478 Code: 0f 84 44 ff ff ff e8 b2 2c 21 00 fb eb 44 e8 aa 2c 21 00 e8 d5 0c 16 0a 4d 85 f6 74 94 e8 9b 2c 21 00 fb 48 c7 c7 20 27 95 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 cb 16 RSP: 0018:ffffc9000211ef20 EFLAGS: 00000293 RAX: ffffffff81a4c5c5 RBX: ffffffff81a4c43f RCX: ffff888051d83c80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e952720 RBP: ffffc9000211efd0 R08: ffffffff9033c4b7 R09: 1ffffffff2067896 R10: dffffc0000000000 R11: fffffbfff2067897 R12: 0000000000000000 R13: 0000000000000033 R14: 0000000000000200 R15: 1ffff92000423de8 _printk+0xdd/0x130 kernel/printk/printk.c:2504 caif_netlink_parms net/caif/chnl_net.c:424 [inline] ipcaif_newlink+0x1f4/0x4e0 net/caif/chnl_net.c:450 rtnl_newlink_create+0x329/0xb70 net/core/rtnetlink.c:3840 __rtnl_newlink net/core/rtnetlink.c:3957 [inline] rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4072 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737 __sock_sendmsg net/socket.c:752 [inline] __sys_sendto+0x3ff/0x590 net/socket.c:2221 __do_sys_sendto net/socket.c:2228 [inline] __se_sys_sendto net/socket.c:2224 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2224 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1dda55c84e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffc5ed70d18 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000555555856500 RCX: 00007f1dda55c84e RDX: 0000000000000048 RSI: 00007f1ddb344670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffc5ed70d94 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f1ddb344670 R15: 0000000000000000