Extracting prog: 5m33.693661926s
Minimizing prog: 1h40m18.481601923s
Simplifying prog options: 0s
Extracting C: 3m58.964917508s
Simplifying C: 24m13.96155554s


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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice-syz_mount_image$ext4-openat-socket$nl_generic-socket$nl_generic-bpf$PROG_LOAD
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x0, &(0x7f0000000200), 0x0, 0x23a, &(0x7f0000000f80)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000540)='mnt\x00', 0x0, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
socket$nl_generic(0x10, 0x3, 0x10)
bpf$PROG_LOAD(0x5, 0x0, 0x0)

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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice-syz_mount_image$ext4-openat-socket$nl_generic-socket$nl_generic-bpf$PROG_LOAD
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x0, &(0x7f0000000200), 0x0, 0x23a, &(0x7f0000000f80)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000540)='mnt\x00', 0x0, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
socket$nl_generic(0x10, 0x3, 0x10)
bpf$PROG_LOAD(0x5, 0x0, 0x0)

program crashed: BUG: workqueue lockup
single: successfully extracted reproducer
found reproducer with 14 syscalls
minimizing guilty program
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice-syz_mount_image$ext4-openat-socket$nl_generic-socket$nl_generic
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x0, &(0x7f0000000200), 0x0, 0x23a, &(0x7f0000000f80)="$eJzs3TFo7HQcB/Bvcnc++94hT10EQQUR0UJ5boJLXRQKUoqIoEJFxEVphdri1nNycdBZpZNLETero3QpLorgVLVDXQQtDhYHHU5yaaXaE8WrF3n5fCBp0vv/8/uH5PvPLeECtNbVJPNJOklmk/SSFGcb3FUvV092t2b2lpPh8PEfi1G7er922u9KkkGSB5PslkVe7CYbO08f/rz/6L1vrPfueW/nqZmpnuSJo8ODx47fXXz9w4UHNj7/8vvFIvPp/+G8Ll4x5n/dIrnlvyj2P1F0mx4B/8TSqx98VeX+1iR3j/LfS5n64r25dsNuL/e/81d93/rhi9unOVbg4g2HveoZOBgCrVMm6aco55LU22U5N1d/h/+6c7l8aXXtldkXVtdXnm96pgIuSj85eOTjSx9d+VP+v+vU+QeuX1X+n1ja/qbaPu40PRpgigbVavbZzfsi/9A61fNf/qGd5B/aS/6hveQf2kv+ob3kH9pL/qG95B/aS/6hvc7mHwBol+Glpt9ABprS9PwDAAAAAAAAAAAAAAAAAACctzWzt3y6TKvmp28nRw8n6Y6r3xn9HnFy42h9+aeiava7ou42kWfunPAAE3q/4bevb/q22fqf3dFs/c2VZPBakmvd7vn7rzi5//69m//m895zExaY0ENPNlv/1+1m6y/sJ59U88+1cfNPmdtGf8fPP/3q+k1Y/+VfJjwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAU/NbAAAA//9cPGy/")
openat(0xffffffffffffff9c, &(0x7f0000000540)='mnt\x00', 0x0, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)
socket$nl_generic(0x10, 0x3, 0x10)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice-syz_mount_image$ext4-openat-socket$nl_generic
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x0, &(0x7f0000000200), 0x0, 0x23a, &(0x7f0000000f80)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000540)='mnt\x00', 0x0, 0x0)
socket$nl_generic(0x10, 0x3, 0x10)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice-syz_mount_image$ext4-openat
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x0, &(0x7f0000000200), 0x0, 0x23a, &(0x7f0000000f80)="$eJzs3TFo7HQcB/Bvcnc++94hT10EQQUR0UJ5boJLXRQKUoqIoEJFxEVphdri1nNycdBZpZNLETero3QpLorgVLVDXQQtDhYHHU5yaaXaE8WrF3n5fCBp0vv/8/uH5PvPLeECtNbVJPNJOklmk/SSFGcb3FUvV092t2b2lpPh8PEfi1G7er922u9KkkGSB5PslkVe7CYbO08f/rz/6L1vrPfueW/nqZmpnuSJo8ODx47fXXz9w4UHNj7/8vvFIvPp/+G8Ll4x5n/dIrnlvyj2P1F0mx4B/8TSqx98VeX+1iR3j/LfS5n64r25dsNuL/e/81d93/rhi9unOVbg4g2HveoZOBgCrVMm6aco55LU22U5N1d/h/+6c7l8aXXtldkXVtdXnm96pgIuSj85eOTjSx9d+VP+v+vU+QeuX1X+n1ja/qbaPu40PRpgigbVavbZzfsi/9A61fNf/qGd5B/aS/6hveQf2kv+ob3kH9pL/qG95B/aS/6hvc7mHwBol+Glpt9ABprS9PwDAAAAAAAAAAAAAAAAAACctzWzt3y6TKvmp28nRw8n6Y6r3xn9HnFy42h9+aeiava7ou42kWfunPAAE3q/4bevb/q22fqf3dFs/c2VZPBakmvd7vn7rzi5//69m//m895zExaY0ENPNlv/1+1m6y/sJ59U88+1cfNPmdtGf8fPP/3q+k1Y/+VfJjwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAU/NbAAAA//9cPGy/")
openat(0xffffffffffffff9c, &(0x7f0000000540)='mnt\x00', 0x0, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice-syz_mount_image$ext4
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000280)='mnt\x00', 0x0, &(0x7f0000000200), 0x0, 0x23a, &(0x7f0000000f80)="$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")

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix-splice
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)
splice(0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x8000f28, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime-socketpair$unix
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
socketpair$unix(0x1, 0x5, 0x0, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create-timer_settime
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_create
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-getpid-timer_settime
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
getpid()
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-prlimit64-timer_create-timer_settime
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-mount$9p_fd-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setregid-prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
setregid(0xffffffffffffffff, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, 0x0, &(0x7f0000000100))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, 0x0)
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
testing program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0xc, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x9)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @tid=0xffffffffffffffff}, &(0x7f0000000100))
timer_settime(0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: BUG: workqueue lockup
simplifying C reproducer
testing compiled C program (duration=6m9.03127677s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m9.03127677s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m9.03127677s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: BUG: workqueue lockup
testing compiled C program (duration=6m9.03127677s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: BUG: workqueue lockup
testing compiled C program (duration=6m9.03127677s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m9.03127677s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-timer_create-timer_settime
program crashed: BUG: workqueue lockup
reproducing took 2h14m5.101757908s
repro crashed as (corrupted=false):
RBP: 00007f5acda61300 R08: 00007f5acd9986c0 R09: 00007f5acd9986c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5acda6130c
R13: 0000000000000000 R14: 00007fffa2c754a0 R15: 00007fffa2c75588
 </TASK>
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 177s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: psi_avgs_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_shepherd
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4
    pending: toggle_allocation_gate, flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_periodic_work, neigh_periodic_work, gc_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wb_workfn
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work

final repro crashed as (corrupted=false):
RBP: 00007f5acda61300 R08: 00007f5acd9986c0 R09: 00007f5acd9986c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5acda6130c
R13: 0000000000000000 R14: 00007fffa2c754a0 R15: 00007fffa2c75588
 </TASK>
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 177s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: psi_avgs_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_shepherd
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4
    pending: toggle_allocation_gate, flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_periodic_work, neigh_periodic_work, gc_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wb_workfn
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work