Extracting prog: 5m31.090407653s
Minimizing prog: 1h25m52.981580715s
Simplifying prog options: 11m18.353610642s
Extracting C: 34.924610312s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: INFO: task hung in nfsd_nl_listener_set_doit
single: successfully extracted reproducer
found reproducer with 6 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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
socket$nl_generic(0x10, 0x3, 0x10)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'lo\x00'})
r1 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240))
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, 0x0, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r1 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'lo\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r1, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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}}): socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'lo\x00', <r1=>0x0})
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r1, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'lo\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r1, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, 0x0, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00'})
sendmsg$nl_route_sched(r0, 0x0, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00'})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, 0x0}, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00'})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={0x0}}, 0x44080)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, 0x0, 0x24004910)

VM was preempted during syz execution: failed to run command in VM: instance is preempted, retrying
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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={0x0}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
program did not crash
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: INFO: task hung in nfsd_nl_listener_set_doit
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
program did not crash
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: INFO: task hung in nfsd_nl_listener_set_doit
extracting C reproducer
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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
program did not crash
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: INFO: task hung in nfsd_nl_listener_set_doit
validation run: crashed=true
testing 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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: INFO: task hung in nfsd_nl_listener_set_doit
validation run: crashed=true
testing 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-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_generic-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r1=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0x3}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x7fffffff}]}}]}, 0x60}}, 0x44080)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000009680)={0x14, 0x27, 0x1, 0x70bd28, 0x25dfdbff, {0x6}}, 0x14}, 0x1, 0x0, 0x0, 0x40000}, 0x24004910)

program crashed: INFO: task hung in nfsd_nl_listener_set_doit
validation run: crashed=true
reproducing took 1h56m25.521376837s
repro crashed as (corrupted=false):
INFO: task syz.1.18:6008 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18        state:D stack:25568 pid:6008  tgid:6008  ppid:5974   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d4/0x5630 kernel/sched/core.c:7239
 __schedule_loop kernel/sched/core.c:7316 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7331
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7388
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821
 nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2713
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
 __sys_sendmsg net/socket.c:2799 [inline]
 __do_sys_sendmsg net/socket.c:2804 [inline]
 __se_sys_sendmsg net/socket.c:2802 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faa2479e0d9
RSP: 002b:00007ffc13a70058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007faa24a25fa0 RCX: 00007faa2479e0d9
RDX: 0000000024004910 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007faa24835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa24a25fac R14: 00007faa24a25fa0 R15: 00007faa24a25fa0
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/31: 1, last CPU#0:
 #0: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6793
locks held by getty/5366: 2, on CPU#0:
 #0: ffff8880322710a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211
locks held by syz.0.17/5915: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.1.18/6008: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.2.19/6046: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.3.20/6088: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.4.21/6130: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.5.22/6172: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.6.23/6215: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.7.24/6264: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by kworker/u8:4/6308: 5, last CPU#1:
 #0: ffff8880b863b4e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:667
 #1: ffff8880b8624408 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933
 #2: ffff8880b8626018 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x904/0xed0 kernel/time/timer.c:1117
 #3: ffffffff9aa07ea8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0xb7/0x420 lib/debugobjects.c:873
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495
locks held by syz.8.25/6309: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.9.26/6352: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [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:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6361 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0xb0 kernel/kcov.c:314
Code: c3 cc cc cc cc cc 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d a8 ad a8 11 65 48 8b 15 a8 ad a8 11 f7 c2 00 01 00 ff
RSP: 0018:ffffc9000468f560 EFLAGS: 00000246
RAX: ffffffff84870e48 RBX: ffff888079c288c0 RCX: ffff888036465dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc9000468f45f R09: 0000000000000000
R10: ffffc9000468f420 R11: fffff520008d1e8c R12: ffffffff8c05a1c0
R13: dffffc0000000000 R14: 1ffff1100f385121 R15: ffff8880349ab8a0
FS:  0000000000000000(0000) GS:ffff888125024000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe916cde9c CR3: 0000000033dac000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 security_file_open+0xd8/0x240 security/security.c:2739
 do_dentry_open+0x4a0/0x1380 fs/open.c:973
 vfs_open+0x3b/0x340 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x1443/0x1d60 fs/namei.c:5000
 do_file_open+0x23e/0x4a0 fs/namei.c:5029
 do_open_execat+0x12b/0x590 fs/exec.c:785
 open_exec fs/exec.c:821 [inline]
 bprm_open_interpreter+0x85/0xb0 fs/exec.c:1437
 load_elf_binary+0x1a5d/0x2960 fs/binfmt_elf.c:904
 search_binary_handler fs/exec.c:1756 [inline]
 exec_binprm fs/exec.c:1788 [inline]
 bprm_execve+0x930/0x1590 fs/exec.c:1844
 kernel_execve+0x8c3/0x9c0 fs/exec.c:1988
 call_usermodehelper_exec_async+0x20f/0x360 kernel/umh.c:107
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
INFO: task syz.1.18:6008 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18        state:D stack:25568 pid:6008  tgid:6008  ppid:5974   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d4/0x5630 kernel/sched/core.c:7239
 __schedule_loop kernel/sched/core.c:7316 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7331
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7388
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821
 nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2713
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
 __sys_sendmsg net/socket.c:2799 [inline]
 __do_sys_sendmsg net/socket.c:2804 [inline]
 __se_sys_sendmsg net/socket.c:2802 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faa2479e0d9
RSP: 002b:00007ffc13a70058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007faa24a25fa0 RCX: 00007faa2479e0d9
RDX: 0000000024004910 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007faa24835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa24a25fac R14: 00007faa24a25fa0 R15: 00007faa24a25fa0
 </TASK>

Showing all locks held in the system:
locks held by khungtaskd/31: 1, last CPU#0:
 #0: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6793
locks held by getty/5366: 2, on CPU#0:
 #0: ffff8880322710a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211
locks held by syz.0.17/5915: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.1.18/6008: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.2.19/6046: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.3.20/6088: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.4.21/6130: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.5.22/6172: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.6.23/6215: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.7.24/6264: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by kworker/u8:4/6308: 5, last CPU#1:
 #0: ffff8880b863b4e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:667
 #1: ffff8880b8624408 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933
 #2: ffff8880b8626018 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x904/0xed0 kernel/time/timer.c:1117
 #3: ffffffff9aa07ea8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0xb7/0x420 lib/debugobjects.c:873
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
 #4: ffffffff8eb5a1e0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495
locks held by syz.8.25/6309: 2, on CPU#1:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964
locks held by syz.9.26/6352: 2, on CPU#0:
 #0: ffffffff900a70a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1217
 #1: ffffffff8ee97420 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 fs/nfsd/nfsctl.c:1964

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [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:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6361 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0xb0 kernel/kcov.c:314
Code: c3 cc cc cc cc cc 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d a8 ad a8 11 65 48 8b 15 a8 ad a8 11 f7 c2 00 01 00 ff
RSP: 0018:ffffc9000468f560 EFLAGS: 00000246
RAX: ffffffff84870e48 RBX: ffff888079c288c0 RCX: ffff888036465dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc9000468f45f R09: 0000000000000000
R10: ffffc9000468f420 R11: fffff520008d1e8c R12: ffffffff8c05a1c0
R13: dffffc0000000000 R14: 1ffff1100f385121 R15: ffff8880349ab8a0
FS:  0000000000000000(0000) GS:ffff888125024000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe916cde9c CR3: 0000000033dac000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 security_file_open+0xd8/0x240 security/security.c:2739
 do_dentry_open+0x4a0/0x1380 fs/open.c:973
 vfs_open+0x3b/0x340 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x1443/0x1d60 fs/namei.c:5000
 do_file_open+0x23e/0x4a0 fs/namei.c:5029
 do_open_execat+0x12b/0x590 fs/exec.c:785
 open_exec fs/exec.c:821 [inline]
 bprm_open_interpreter+0x85/0xb0 fs/exec.c:1437
 load_elf_binary+0x1a5d/0x2960 fs/binfmt_elf.c:904
 search_binary_handler fs/exec.c:1756 [inline]
 exec_binprm fs/exec.c:1788 [inline]
 bprm_execve+0x930/0x1590 fs/exec.c:1844
 kernel_execve+0x8c3/0x9c0 fs/exec.c:1988
 call_usermodehelper_exec_async+0x20f/0x360 kernel/umh.c:107
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>