Extracting prog: 4m18.563259262s
Minimizing prog: 1h21m27.83404718s
Simplifying prog options: 0s
Extracting C: 1m25.926423101s
Simplifying C: 11m44.600084544s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_ULP-sendmsg$nl_route-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) (async)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)=@newlink={0x3c, 0x10, 0xffffffffffffffff, 0x70bd2c, 0x25dfdbfb, {0x0, 0x0, 0x0, 0x0, 0x11129, 0x1020}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macvlan={{0xc}, {0x4}}}, @IFLA_LINKMODE={0x5, 0x11, 0x2}]}, 0x3c}, 0x1, 0x0, 0x0, 0x8014}, 0x40040)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_ULP-sendmsg$nl_route-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) (async)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)=@newlink={0x3c, 0x10, 0xffffffffffffffff, 0x70bd2c, 0x25dfdbfb, {0x0, 0x0, 0x0, 0x0, 0x11129, 0x1020}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macvlan={{0xc}, {0x4}}}, @IFLA_LINKMODE={0x5, 0x11, 0x2}]}, 0x3c}, 0x1, 0x0, 0x0, 0x8014}, 0x40040)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_ULP-sendmsg$nl_route-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) (async)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)=@newlink={0x3c, 0x10, 0xffffffffffffffff, 0x70bd2c, 0x25dfdbfb, {0x0, 0x0, 0x0, 0x0, 0x11129, 0x1020}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macvlan={{0xc}, {0x4}}}, @IFLA_LINKMODE={0x5, 0x11, 0x2}]}, 0x3c}, 0x1, 0x0, 0x0, 0x8014}, 0x40040)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_ULP-sendmsg$nl_route-syz_init_net_socket$nl_generic-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) (async)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)=@newlink={0x3c, 0x10, 0xffffffffffffffff, 0x70bd2c, 0x25dfdbfb, {0x0, 0x0, 0x0, 0x0, 0x11129, 0x1020}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macvlan={{0xc}, {0x4}}}, @IFLA_LINKMODE={0x5, 0x11, 0x2}]}, 0x3c}, 0x1, 0x0, 0x0, 0x8014}, 0x40040)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_ULP-sendmsg$nl_route-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) (async)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000000c0)=@newlink={0x3c, 0x10, 0xffffffffffffffff, 0x70bd2c, 0x25dfdbfb, {0x0, 0x0, 0x0, 0x0, 0x11129, 0x1020}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macvlan={{0xc}, {0x4}}}, @IFLA_LINKMODE={0x5, 0x11, 0x2}]}, 0x3c}, 0x1, 0x0, 0x0, 0x8014}, 0x40040)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_ULP-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) (async)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r1)
sendmsg$NBD_CMD_CONNECT(r1, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(0x0, r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={0x0, 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB, @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
testing program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB, @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing compiled C program (duration=6m0s, {Threaded:false 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}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-socket$inet6_tcp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000200), r0)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f00000027c0)={0x0, 0x0, &(0x7f0000002780)={&(0x7f00000002c0)=ANY=[@ANYBLOB='<\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010029bd7000fbdbdf25010000000c00020000000000000000001c0007801800018008000100", @ANYBLOB="04"], 0x3c}, 0x1, 0x0, 0x0, 0x4000004}, 0x4000)

program crashed: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
validation run: crashed=true
reproducing took 1h44m3.353081528s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 6276 Comm: syz.0.683 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868
 fs_reclaim_acquire+0xb8/0x110 mm/page_alloc.c:4337
 might_alloc include/linux/sched/mm.h:317 [inline]
 slab_pre_alloc_hook mm/slub.c:4521 [inline]
 slab_alloc_node mm/slub.c:4876 [inline]
 __kmalloc_cache_noprof+0x58/0x624 mm/slub.c:5415
 kmalloc_noprof include/linux/slab.h:950 [inline]
 kzalloc_noprof include/linux/slab.h:1188 [inline]
 nbd_add_socket+0x258/0x738 drivers/block/nbd.c:1277
 nbd_genl_connect+0xdfc/0x15d4 drivers/block/nbd.c:2217
 genl_family_rcv_msg_doit+0x1e4/0x2d4 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x43c/0x620 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2555
 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x600/0x7f8 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x648/0x948 net/netlink/af_netlink.c:1899
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg+0xc8/0x138 net/socket.c:802
 ____sys_sendmsg+0x3d0/0x6c8 net/socket.c:2698
 ___sys_sendmsg+0x198/0x224 net/socket.c:2752
 __sys_sendmsg+0x160/0x214 net/socket.c:2784
 __do_sys_sendmsg net/socket.c:2789 [inline]
 __se_sys_sendmsg net/socket.c:2787 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2787
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 6276 Comm: syz.0.683 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868
 fs_reclaim_acquire+0xb8/0x110 mm/page_alloc.c:4337
 might_alloc include/linux/sched/mm.h:317 [inline]
 slab_pre_alloc_hook mm/slub.c:4521 [inline]
 slab_alloc_node mm/slub.c:4876 [inline]
 __kmalloc_cache_noprof+0x58/0x624 mm/slub.c:5415
 kmalloc_noprof include/linux/slab.h:950 [inline]
 kzalloc_noprof include/linux/slab.h:1188 [inline]
 nbd_add_socket+0x258/0x738 drivers/block/nbd.c:1277
 nbd_genl_connect+0xdfc/0x15d4 drivers/block/nbd.c:2217
 genl_family_rcv_msg_doit+0x1e4/0x2d4 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x43c/0x620 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2555
 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x600/0x7f8 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x648/0x948 net/netlink/af_netlink.c:1899
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg+0xc8/0x138 net/socket.c:802
 ____sys_sendmsg+0x3d0/0x6c8 net/socket.c:2698
 ___sys_sendmsg+0x198/0x224 net/socket.c:2752
 __sys_sendmsg+0x160/0x214 net/socket.c:2784
 __do_sys_sendmsg net/socket.c:2789 [inline]
 __se_sys_sendmsg net/socket.c:2787 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2787
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594