Extracting prog: 35m3.551631859s Minimizing prog: 40m56.198469308s Simplifying prog options: 25m25.2871104s Extracting C: 5m15.297128586s Simplifying C: 0s extracting reproducer from 37 programs testing a last program of every proc single: executing 7 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$unix-socketpair$unix-socket$nl_generic-syz_genetlink_get_family_id$nl80211-ioctl$sock_SIOCGIFINDEX_80211-sendmsg$NL80211_CMD_JOIN_MESH-connect$unix-sendmmsg$unix-recvmmsg-ioctl$FBIOPUT_VSCREENINFO-socket$netlink-socket$inet_icmp_raw-setsockopt$IPT_SO_SET_REPLACE-getsockopt$bt_hci-sendmsg$nl_route-prctl$PR_SCHED_CORE-setsockopt$IP_VS_SO_SET_STARTDAEMON-syz_genetlink_get_family_id$l2tp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_SET_USER_MEMORY_REGION-syz_fuse_handle_req-fsopen-close_range-fsconfig$FSCONFIG_CMD_CREATE-fsmount-sendmmsg$inet6-ioctl$KVM_CREATE_VCPU-syz_kvm_setup_cpu$x86-getsockopt$sock_buf detailed listing: executing program 0: socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000500), 0xffffffffffffffff) ioctl$sock_SIOCGIFINDEX_80211(r2, 0x8933, &(0x7f0000000100)={'wlan0\x00', 0x0}) sendmsg$NL80211_CMD_JOIN_MESH(r3, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000180)=ANY=[@ANYBLOB='@\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="010000000000000000000200000008000300", @ANYRES32=r5, @ANYBLOB="0c00990000000000000000000800a115ffff0000080026008d03000008009f"], 0x40}}, 0x0) connect$unix(r0, &(0x7f00000002c0)=@file={0x0, './file0\x00'}, 0x6e) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) ioctl$FBIOPUT_VSCREENINFO(0xffffffffffffffff, 0x4601, &(0x7f0000000100)={0x30, 0x300, 0x80, 0xf0, 0x40, 0x0, 0x20, 0xfffffffd, {0x0, 0x8, 0x1}, {0x0, 0x0, 0xfffffffd}, {}, {0x0, 0x3}, 0x0, 0x0, 0x2, 0xd613, 0x0, 0xfffffffd, 0xffffffff, 0x4, 0x40000009, 0x6, 0xfffffffd, 0x0, 0x20, 0x2, 0x0, 0x1}) r6 = socket$netlink(0x10, 0x3, 0x0) r7 = socket$inet_icmp_raw(0x2, 0x3, 0x1) setsockopt$IPT_SO_SET_REPLACE(r7, 0x0, 0x40, &(0x7f00000008c0)=@nat={'nat\x00', 0x1b, 0x5, 0x3b0, 0x1c8, 0xf0, 0xffffffff, 0x1c8, 0x270, 0x270, 0x480, 0xffffffff, 0x480, 0x480, 0x5, 0x0, {[{{@ip={@dev={0xac, 0x14, 0x14, 0xf}, @initdev={0xac, 0x1e, 0x0, 0x0}, 0x0, 0xff, 'macvtap0\x00', 'veth1_to_batadv\x00', {0xff}, {}, 0x2f, 0x0, 0x40}, 0x0, 0xc8, 0xf0, 0x0, {}, [@common=@addrtype={{0x30}, {0x80, 0x410, 0x1, 0x1}}, @common=@icmp={{0x28}, {0x10, '6n'}}]}, @common=@unspec=@NFQUEUE1={0x28, 'NFQUEUE\x00', 0x1, {0x7}}}, {{@uncond, 0x0, 0xa0, 0xd8, 0x0, {}, [@common=@inet=@l2tp={{0x30}, {0x2, 0x2, 0x2, 0x1}}]}, @SNAT0={0x38, 'SNAT\x00', 0x0, {0x1, {0x4, @private=0xa010101, @empty, @port=0x4e22, @gre_key=0x6f6}}}}, {{@ip={@multicast2, @empty, 0xffffff00, 0xff000000, 'wg2\x00', 'bridge0\x00', {0xff}, {}, 0x8b, 0x1, 0x2}, 0x0, 0x70, 0xa8}, @NETMAP={0x38, 'NETMAP\x00', 0x0, {0x1, {0x18, @local, @private=0xa010101, @port=0x4e22, @gre_key=0x81}}}}, {{@uncond, 0x0, 0x70, 0xa8}, @SNAT0={0x38, 'SNAT\x00', 0x0, {0x1, {0x8, @dev={0xac, 0x14, 0x14, 0x43}, @initdev={0xac, 0x1e, 0x0, 0x0}, @icmp_id=0x68, @port=0x4e23}}}}], {{'\x00', 0x0, 0x70, 0x98}, {0x28}}}}, 0x410) getsockopt$bt_hci(r7, 0x0, 0x1, &(0x7f00000001c0)=""/81, &(0x7f00000000c0)=0x51) sendmsg$nl_route(r6, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000140)=ANY=[@ANYBLOB='8\x00\x00\x00T\x00=\t\x00\x00\x00\x00\x00\x00\x00\x00\a\x00\x00\x00', @ANYRES32, @ANYBLOB="200001"], 0x38}}, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) setsockopt$IP_VS_SO_SET_STARTDAEMON(0xffffffffffffffff, 0x0, 0x1a, 0x0, 0x0) syz_genetlink_get_family_id$l2tp(&(0x7f0000000740), 0xffffffffffffffff) r8 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000040), 0x20040, 0x0) r9 = ioctl$KVM_CREATE_VM(r8, 0xae01, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r9, 0x4020ae46, &(0x7f0000000400)={0x0, 0x0, 0x0, 0x20002000, &(0x7f0000000000/0x2000)=nil}) syz_fuse_handle_req(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000007040)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000007000)={0x20}, 0x0}) r10 = fsopen(&(0x7f00000000c0)='sysfs\x00', 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2) fsconfig$FSCONFIG_CMD_CREATE(r10, 0x6, 0x0, 0x0, 0x0) r11 = fsmount(r10, 0x0, 0x0) sendmmsg$inet6(r11, 0x0, 0x0, 0x0) r12 = ioctl$KVM_CREATE_VCPU(r9, 0xae41, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r12, &(0x7f0000000000/0x18000)=nil, &(0x7f0000000600)=[@text64={0x40, &(0x7f0000000640)="430fc73f0f2390b9800000c00f3235010000000f300f20d835080000000f22d8c4e18173f53866baf80cb83879e487ef66bafc0cec66b88e008ec02d1aa80000460f1c460041ae", 0x47}], 0x1, 0x74, 0x0, 0x0) getsockopt$sock_buf(0xffffffffffffffff, 0x1, 0x0, 0x0, &(0x7f0000000240)) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-ioctl$SNDRV_PCM_IOCTL_STATUS_EXT64 detailed listing: executing program 0: syz_usb_connect(0x6, 0xf4, &(0x7f0000000700)=ANY=[], 0x0) ioctl$SNDRV_PCM_IOCTL_STATUS_EXT64(0xffffffffffffffff, 0xc0984124, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-syz_genetlink_get_family_id$nl80211-ioctl$sock_SIOCGIFINDEX_80211-socket$nl_netfilter-sendmsg$NFT_BATCH-sendmsg$NFT_BATCH-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-socket$nl_netfilter-socket$nl_route-madvise-socket$netlink-openat-openat$fuse-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-socket$key-prctl$PR_SCHED_CORE-syz_open_dev$sndmidi-dup-write$6lowpan_enable-socket$inet_udp-socket$key-sendmsg$key-bind$inet-connect$inet-setsockopt$inet_IP_XFRM_POLICY-sendmmsg-sendmsg$NL80211_CMD_FRAME detailed listing: executing program 0: r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000380), 0xffffffffffffffff) ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000000)={'wlan0\x00', 0x0}) r3 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r3, &(0x7f000000c2c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000002c0)=ANY=[@ANYBLOB], 0x7c}}, 0x0) sendmsg$NFT_BATCH(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000001840)={{0x14}, [@NFT_MSG_NEWRULE={0xb0, 0x6, 0xa, 0x409, 0x0, 0x0, {0x2}, [@NFTA_RULE_CHAIN={0x9, 0x2, 'syz2\x00'}, @NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_EXPRESSIONS={0x84, 0x4, 0x0, 0x1, [{0x20, 0x1, 0x0, 0x1, @ct={{0x7}, @val={0x14, 0x2, 0x0, 0x1, [@NFTA_CT_DREG={0x8, 0x1, 0x1, 0x0, 0xa}, @NFTA_CT_KEY={0x8, 0x2, 0x1, 0x0, 0xe}]}}}, {0x60, 0x1, 0x0, 0x1, @match={{0xa}, @val={0x50, 0x2, 0x0, 0x1, [@NFTA_MATCH_INFO={0x34, 0x3, "55b0f1230a6a7db23b6d45fcd6c231e61562388840e6520b620f0c97ff4d151ff6840ec33256fa29356e76d1711be493"}, @NFTA_MATCH_NAME={0xe, 0x1, 'multiport\x00'}, @NFTA_MATCH_REV={0x8, 0x2, 0x1, 0x0, 0x1}]}}}]}]}], {0x14}}, 0xd8}, 0x1, 0x0, 0x0, 0x20000091}, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0x11, 0x3, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x44, '\x00', 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x94) socket$nl_netfilter(0x10, 0x3, 0xc) socket$nl_route(0x10, 0x3, 0x0) madvise(&(0x7f0000000000/0x600000)=nil, 0x600722, 0x19) socket$netlink(0x10, 0x3, 0x0) openat(0xffffffffffffff9c, 0x0, 0x40, 0x0) openat$fuse(0xffffffffffffff9c, 0x0, 0x42, 0x0) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x8, 0x0) socket$key(0xf, 0x3, 0x2) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) r4 = syz_open_dev$sndmidi(&(0x7f0000000040), 0x2, 0x141101) r5 = dup(r4) write$6lowpan_enable(r5, &(0x7f0000000000)='0', 0xfffffd2c) r6 = socket$inet_udp(0x2, 0x2, 0x0) r7 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r7, &(0x7f0000000000)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000240)=ANY=[@ANYBLOB="0207000902"], 0x10}}, 0x0) bind$inet(r6, &(0x7f00000001c0)={0x2, 0x0, @local}, 0x16) connect$inet(r6, &(0x7f0000000480)={0x2, 0x0, @multicast2}, 0x10) setsockopt$inet_IP_XFRM_POLICY(r6, 0x0, 0x11, &(0x7f00000002c0)={{{@in6=@dev={0xfe, 0x80, '\x00', 0x4}, @in6=@empty, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0xee01}, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffe}, {}, 0x0, 0x0, 0x1}, {{@in6=@dev, 0x0, 0x33}, 0x0, @in=@private=0xa010100, 0x0, 0x0, 0x0, 0xb7, 0xffffffff}}, 0xe8) sendmmsg(r6, &(0x7f0000007fc0), 0x800001d, 0x1c) sendmsg$NL80211_CMD_FRAME(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000fc0)={&(0x7f00000001c0)={0x34, r1, 0x1, 0x0, 0x0, {{0x2}, {@val={0x8, 0x3, r2}, @void}}, [@chandef_params=[@NL80211_ATTR_CENTER_FREQ1={0x8, 0xa0, 0x8d6}, @NL80211_ATTR_CHANNEL_WIDTH={0x8, 0x9f, 0xd}], @chandef_params=[@NL80211_ATTR_WIPHY_FREQ={0x8}]]}, 0x34}, 0x1, 0x0, 0x0, 0x4000000}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-socket-connect$inet6 detailed listing: executing program 0: unshare(0x4020400) r0 = socket(0x2b, 0x80801, 0x1) connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4, 0x3ff, @empty, 0x1}, 0x1c) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_procs-write$cgroup_pid-writev-socket$nl_netfilter-prctl$PR_SCHED_CORE-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-syz_io_uring_setup-syz_memcpy_off$IO_URING_METADATA_GENERIC-move_mount-eventfd2-io_uring_register$IORING_REGISTER_EVENTFD-ioctl$sock_SIOCGIFINDEX_80211-ioctl$sock_SIOCGIFINDEX_80211-syz_io_uring_submit-io_uring_enter-socket$nl_route-sendmsg$nl_route-ioctl$SNDRV_CTL_IOCTL_ELEM_ADD-syz_open_dev$video-socket$kcm-fsopen-fsmount-fchdir detailed listing: executing program 0: mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.cpu/syz1\x00', 0x1ff) r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) r1 = openat$cgroup_procs(r0, &(0x7f0000000040)='cgroup.procs\x00', 0x2, 0x0) write$cgroup_pid(r1, &(0x7f00000000c0), 0x12) writev(0xffffffffffffffff, &(0x7f00000000c0)=[{&(0x7f0000000140)='2', 0x1}], 0x1) socket$nl_netfilter(0x10, 0x3, 0xc) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000380)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r3, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) r4 = syz_io_uring_setup(0x49f, &(0x7f0000000400)={0x0, 0x5cf, 0x400, 0x7ffe, 0x40024e}, &(0x7f0000000340)=0x0, &(0x7f0000000040)=0x0) syz_memcpy_off$IO_URING_METADATA_GENERIC(r5, 0x4, &(0x7f0000000000)=0xffb, 0x0, 0x4) move_mount(0xffffffffffffffff, &(0x7f00000001c0)='./file0\x00', 0xffffffffffffff9c, &(0x7f00000003c0)='./file0\x00', 0x4) r7 = eventfd2(0xff, 0x80001) io_uring_register$IORING_REGISTER_EVENTFD(r4, 0x4, &(0x7f0000000300)=r7, 0x1) ioctl$sock_SIOCGIFINDEX_80211(0xffffffffffffffff, 0x8933, 0x0) ioctl$sock_SIOCGIFINDEX_80211(0xffffffffffffffff, 0x8933, &(0x7f0000000180)={'wlan1\x00'}) syz_io_uring_submit(r5, r6, &(0x7f00000002c0)=@IORING_OP_MSG_RING={0x28, 0x40, 0x0, r4, 0x0, 0x0, 0x0, 0x2}) io_uring_enter(r4, 0x3d0e, 0x4c1, 0x43, 0x0, 0x0) r8 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r8, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000480)=ANY=[@ANYRES16], 0x28}}, 0x20000000) ioctl$SNDRV_CTL_IOCTL_ELEM_ADD(0xffffffffffffffff, 0xc1105517, 0x0) syz_open_dev$video(0x0, 0xa4, 0x0) socket$kcm(0x15, 0x5, 0x0) r9 = fsopen(&(0x7f0000000100)='mqueue\x00', 0x0) r10 = fsmount(r9, 0x1, 0x0) fchdir(r10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)=ANY=[@ANYBLOB="600000000206010800000000000000000000000005000400000000000900020073797a31000000001400078005001500010000000800124000000000050005000a000000050001000600000011000300686173683a69702c6d61726b"], 0x60}, 0x1, 0x0, 0x0, 0x40000c0}, 0x0) r1 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r1, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program crashed: INFO: task hung in uhid_char_release single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-openat$uhid detailed listing: executing program 0: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)=ANY=[@ANYBLOB="600000000206010800000000000000000000000005000400000000000900020073797a31000000001400078005001500010000000800124000000000050005000a000000050001000600000011000300686173683a69702c6d61726b"], 0x60}, 0x1, 0x0, 0x0, 0x40000c0}, 0x0) openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-write$UHID_CREATE detailed listing: executing program 0: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)=ANY=[@ANYBLOB="600000000206010800000000000000000000000005000400000000000900020073797a31000000001400078005001500010000000800124000000000050005000a000000050001000600000011000300686173683a69702c6d61726b"], 0x60}, 0x1, 0x0, 0x0, 0x40000c0}, 0x0) write$UHID_CREATE(0xffffffffffffffff, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_netfilter-openat$uhid-write$UHID_CREATE detailed listing: executing program 0: socket$nl_netfilter(0x10, 0x3, 0xc) r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program crashed: INFO: task hung in uhid_char_release testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program crashed: INFO: task hung in uhid_char_release testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, 0x0, 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', 0x0, 0x0, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE 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=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program crashed: INFO: task hung in uhid_char_release extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program did not crash testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE(r0, &(0x7f0000001140)={0x0, {'syz1\x00', 'syz1\x00', 'syz1\x00', &(0x7f0000000140)=""/4096, 0x1000, 0x40, 0x400, 0x4, 0x3, 0x8}}, 0x120) program crashed: INFO: task hung in uhid_char_release extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$uhid-write$UHID_CREATE program crashed: no output from test machine a never seen crash title: no output from test machine, ignore reproducing took 1h47m30.881936179s repro crashed as (corrupted=false): INFO: task syz.0.16:6090 blocked for more than 143 seconds. Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack:27240 pid:6090 tgid:6090 ppid:5957 task_flags:0x400040 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0x165/0x360 kernel/sched/core.c:6874 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366 uhid_dev_destroy drivers/hid/uhid.c:584 [inline] uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faa9fd8e969 RSP: 002b:00007ffe1482eb48 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000003a795 RCX: 00007faa9fd8e969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000021482ee3f R10: 00007faa9fc00000 R11: 0000000000000246 R12: 00007faa9ffb5fac R13: 00007faa9ffb5fa0 R14: ffffffffffffffff R15: 0000000000000003 INFO: task syz.3.19:6097 blocked for more than 144 seconds. Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.19 state:D stack:27240 pid:6097 tgid:6097 ppid:5965 task_flags:0x400040 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0x165/0x360 kernel/sched/core.c:6874 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366 uhid_dev_destroy drivers/hid/uhid.c:584 [inline] uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f21a038e969 RSP: 002b:00007ffc8522e6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000003b15c RCX: 00007f21a038e969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000028522e9df R10: 00007f21a0200000 R11: 0000000000000246 R12: 00007f21a05b5fac R13: 00007f21a05b5fa0 R14: ffffffffffffffff R15: 0000000000000003 INFO: task syz.2.18:6098 blocked for more than 144 seconds. Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.18 state:D stack:27240 pid:6098 tgid:6098 ppid:5967 task_flags:0x400040 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0x165/0x360 kernel/sched/core.c:6874 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366 uhid_dev_destroy drivers/hid/uhid.c:584 [inline] uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6efa18e969 RSP: 002b:00007fff5c438a88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000003b277 RCX: 00007f6efa18e969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000025c438d7f R10: 00007f6efa000000 R11: 0000000000000246 R12: 00007f6efa3b5fac R13: 00007f6efa3b5fa0 R14: ffffffffffffffff R15: 0000000000000003 Showing all locks held in the system: 2 locks held by kworker/u8:1/13: 1 lock held by khungtaskd/31: #0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770 2 locks held by kworker/u8:4/70: 3 locks held by kworker/0:2/977: 3 locks held by kworker/u8:6/1324: #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc900044ffbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc900044ffbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303 5 locks held by kworker/u8:7/1339: #0: ffff88801b2fe148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801b2fe148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000458fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000458fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8f4fe650 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800 net/core/net_namespace.c:662 #3: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: ops_exit_rtnl_list net/core/net_namespace.c:174 [inline] #3: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: ops_undo_list+0x2a4/0x990 net/core/net_namespace.c:249 #4: ffffffff8e142a80 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570 kernel/rcu/tree.c:3782 3 locks held by kworker/1:2/5150: #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000ef7fbc0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000ef7fbc0 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 2 locks held by dhcpcd/5494: #0: ffff8880356046d0 ( nlk_cb_mutex-ROUTE ){+.+.}-{4:4} , at: netlink_dump+0xb8/0xe20 net/netlink/af_netlink.c:2255 #1: ffffffff8f50b248 ( rtnl_mutex ){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] ){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200 net/core/rtnetlink.c:6812 2 locks held by getty/5598: #0: ffff888030e3b0a0 (&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+0x43e/0x1400 drivers/tty/n_tty.c:2222 3 locks held by kworker/0:3/5997: 3 locks held by kworker/0:4/6031: 3 locks held by kworker/0:5/6033: 3 locks held by kworker/1:6/6091: 3 locks held by kworker/0:9/6100: 1 lock held by syz.7.24/6220: #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4} , at: tun_detach drivers/net/tun.c:633 [inline] , at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3396 7 locks held by syz-executor/6239: #0: ffff888035260428 (sb_writers #7 ){.+.+}-{0:0} , at: file_start_write include/linux/fs.h:3092 [inline] , at: vfs_write+0x211/0xa90 fs/read_write.c:682 #1: ffff88805f2d3888 ( &of->mutex ){+.+.}-{4:4} , at: kernfs_fop_write_iter+0x1e0/0x4f0 fs/kernfs/file.c:325 #2: ffff8880271ffb48 ( kn->active #59 ){.+.+}-{0:0} , at: kernfs_fop_write_iter+0x203/0x4f0 fs/kernfs/file.c:326 #3: ffffffff8eda91c8 ( nsim_bus_dev_list_lock ){+.+.}-{4:4} , at: new_device_store+0x12c/0x6f0 drivers/net/netdevsim/bus.c:166 #4: ffff88807bb650e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #4: ffff88807bb650e8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400 drivers/base/dd.c:1004 #5: ffff8880532ef250 (&devlink->lock_key#13){+.+.}-{4:4}, at: nsim_drv_probe+0xc1/0xb70 drivers/net/netdevsim/dev.c:1537 #6: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #6: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2143 2 locks held by syz-executor/6323: #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 1 lock held by syz-executor/6329: #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 2 locks held by syz-executor/6335: #0: ffffffff8fa0f790 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8fa0f790 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8fa0f790 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 2 locks held by syz-executor/6349: #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 2 locks held by syz-executor/6351: #0: ffffffff8ecb0140 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8ecb0140 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8ecb0140 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline] watchdog+0xfee/0x1030 kernel/hung_task.c:470 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6033 Comm: kworker/0:5 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events uhid_device_add_worker RIP: 0010:unwind_next_frame+0x361/0x2390 arch/x86/kernel/unwind_orc.c:505 Code: c6 e4 f8 26 90 49 c1 fd 02 4a 8d 14 6d 00 00 00 00 4c 01 ea 48 01 d2 48 01 f2 48 bd 00 00 00 00 00 fc ff df 0f 84 37 01 00 00 <4c> 8d 62 04 4c 8d 6a 05 4c 89 e0 48 c1 e8 03 0f b6 04 28 84 c0 0f RSP: 0018:ffffc90000007698 EFLAGS: 00000282 RAX: ffffffff9005fe28 RBX: ffffffff9005fe2c RCX: ffffffff9005fe30 RDX: ffffffff90aa1754 RSI: ffffffff90aa1754 RDI: ffffffff8be26ee0 RBP: dffffc0000000000 R08: 0000000000000012 R09: ffffffff81727e15 R10: ffffc900000077b8 R11: ffffffff81acd580 R12: ffffffff88b24e22 R13: 0000000000000000 R14: ffffc90000007768 R15: ffffffff9005fe2c FS: 0000000000000000(0000) GS:ffff888125c5f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556cd0542000 CR3: 0000000028262000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 final repro crashed as (corrupted=false): INFO: task syz.0.16:6090 blocked for more than 143 seconds. Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack:27240 pid:6090 tgid:6090 ppid:5957 task_flags:0x400040 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0x165/0x360 kernel/sched/core.c:6874 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366 uhid_dev_destroy drivers/hid/uhid.c:584 [inline] uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faa9fd8e969 RSP: 002b:00007ffe1482eb48 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000003a795 RCX: 00007faa9fd8e969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000021482ee3f R10: 00007faa9fc00000 R11: 0000000000000246 R12: 00007faa9ffb5fac R13: 00007faa9ffb5fa0 R14: ffffffffffffffff R15: 0000000000000003 INFO: task syz.3.19:6097 blocked for more than 144 seconds. Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.19 state:D stack:27240 pid:6097 tgid:6097 ppid:5965 task_flags:0x400040 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0x165/0x360 kernel/sched/core.c:6874 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366 uhid_dev_destroy drivers/hid/uhid.c:584 [inline] uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f21a038e969 RSP: 002b:00007ffc8522e6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000003b15c RCX: 00007f21a038e969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000028522e9df R10: 00007f21a0200000 R11: 0000000000000246 R12: 00007f21a05b5fac R13: 00007f21a05b5fa0 R14: ffffffffffffffff R15: 0000000000000003 INFO: task syz.2.18:6098 blocked for more than 144 seconds. Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.18 state:D stack:27240 pid:6098 tgid:6098 ppid:5967 task_flags:0x400040 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5392 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6781 __schedule_loop kernel/sched/core.c:6859 [inline] schedule+0x165/0x360 kernel/sched/core.c:6874 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:148 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4246 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4366 uhid_dev_destroy drivers/hid/uhid.c:584 [inline] uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662 __fput+0x449/0xa70 fs/file_table.c:465 task_work_run+0x1d4/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6efa18e969 RSP: 002b:00007fff5c438a88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000003b277 RCX: 00007f6efa18e969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000025c438d7f R10: 00007f6efa000000 R11: 0000000000000246 R12: 00007f6efa3b5fac R13: 00007f6efa3b5fa0 R14: ffffffffffffffff R15: 0000000000000003 Showing all locks held in the system: 2 locks held by kworker/u8:1/13: 1 lock held by khungtaskd/31: #0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e13d080 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770 2 locks held by kworker/u8:4/70: 3 locks held by kworker/0:2/977: 3 locks held by kworker/u8:6/1324: #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc900044ffbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc900044ffbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303 5 locks held by kworker/u8:7/1339: #0: ffff88801b2fe148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801b2fe148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000458fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000458fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8f4fe650 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800 net/core/net_namespace.c:662 #3: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: ops_exit_rtnl_list net/core/net_namespace.c:174 [inline] #3: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: ops_undo_list+0x2a4/0x990 net/core/net_namespace.c:249 #4: ffffffff8e142a80 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570 kernel/rcu/tree.c:3782 3 locks held by kworker/1:2/5150: #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000ef7fbc0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000ef7fbc0 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 2 locks held by dhcpcd/5494: #0: ffff8880356046d0 ( nlk_cb_mutex-ROUTE ){+.+.}-{4:4} , at: netlink_dump+0xb8/0xe20 net/netlink/af_netlink.c:2255 #1: ffffffff8f50b248 ( rtnl_mutex ){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] ){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200 net/core/rtnetlink.c:6812 2 locks held by getty/5598: #0: ffff888030e3b0a0 (&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+0x43e/0x1400 drivers/tty/n_tty.c:2222 3 locks held by kworker/0:3/5997: 3 locks held by kworker/0:4/6031: 3 locks held by kworker/0:5/6033: 3 locks held by kworker/1:6/6091: 3 locks held by kworker/0:9/6100: 1 lock held by syz.7.24/6220: #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4} , at: tun_detach drivers/net/tun.c:633 [inline] , at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3396 7 locks held by syz-executor/6239: #0: ffff888035260428 (sb_writers #7 ){.+.+}-{0:0} , at: file_start_write include/linux/fs.h:3092 [inline] , at: vfs_write+0x211/0xa90 fs/read_write.c:682 #1: ffff88805f2d3888 ( &of->mutex ){+.+.}-{4:4} , at: kernfs_fop_write_iter+0x1e0/0x4f0 fs/kernfs/file.c:325 #2: ffff8880271ffb48 ( kn->active #59 ){.+.+}-{0:0} , at: kernfs_fop_write_iter+0x203/0x4f0 fs/kernfs/file.c:326 #3: ffffffff8eda91c8 ( nsim_bus_dev_list_lock ){+.+.}-{4:4} , at: new_device_store+0x12c/0x6f0 drivers/net/netdevsim/bus.c:166 #4: ffff88807bb650e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #4: ffff88807bb650e8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x400 drivers/base/dd.c:1004 #5: ffff8880532ef250 (&devlink->lock_key#13){+.+.}-{4:4}, at: nsim_drv_probe+0xc1/0xb70 drivers/net/netdevsim/dev.c:1537 #6: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #6: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2143 2 locks held by syz-executor/6323: #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 1 lock held by syz-executor/6329: #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 2 locks held by syz-executor/6335: #0: ffffffff8fa0f790 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8fa0f790 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8fa0f790 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 2 locks held by syz-executor/6349: #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8eca30a0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 2 locks held by syz-executor/6351: #0: ffffffff8ecb0140 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8ecb0140 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8ecb0140 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570 #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffffffff8f50b248 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4054 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline] watchdog+0xfee/0x1030 kernel/hung_task.c:470 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6033 Comm: kworker/0:5 Not tainted 6.15.0-syzkaller-10769-g7d4e49a77d99 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events uhid_device_add_worker RIP: 0010:unwind_next_frame+0x361/0x2390 arch/x86/kernel/unwind_orc.c:505 Code: c6 e4 f8 26 90 49 c1 fd 02 4a 8d 14 6d 00 00 00 00 4c 01 ea 48 01 d2 48 01 f2 48 bd 00 00 00 00 00 fc ff df 0f 84 37 01 00 00 <4c> 8d 62 04 4c 8d 6a 05 4c 89 e0 48 c1 e8 03 0f b6 04 28 84 c0 0f RSP: 0018:ffffc90000007698 EFLAGS: 00000282 RAX: ffffffff9005fe28 RBX: ffffffff9005fe2c RCX: ffffffff9005fe30 RDX: ffffffff90aa1754 RSI: ffffffff90aa1754 RDI: ffffffff8be26ee0 RBP: dffffc0000000000 R08: 0000000000000012 R09: ffffffff81727e15 R10: ffffc900000077b8 R11: ffffffff81acd580 R12: ffffffff88b24e22 R13: 0000000000000000 R14: ffffc90000007768 R15: ffffffff9005fe2c FS: 0000000000000000(0000) GS:ffff888125c5f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556cd0542000 CR3: 0000000028262000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68