Extracting prog: 5m43.318299373s
Minimizing prog: 1h10m53.004621281s
Simplifying prog options: 13m3.888882883s
Extracting C: 5m8.912964329s
Simplifying C: 0s


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}}): prlimit64-sched_setscheduler-openat$uinput-write$uinput_user_dev-ioctl$UI_DEV_SETUP-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
write$uinput_user_dev(r0, 0x0, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x5501, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 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}}): prlimit64-sched_setscheduler-openat$uinput-write$uinput_user_dev-ioctl$UI_DEV_SETUP-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
write$uinput_user_dev(r0, 0x0, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x5501, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program crashed: BUG: workqueue lockup
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=6m23.698229763s, {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-openat$uinput-write$uinput_user_dev-ioctl$UI_DEV_SETUP-timer_create
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
write$uinput_user_dev(r0, 0x0, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x5501, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))

program did not crash
testing program (duration=6m23.698229763s, {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-openat$uinput-write$uinput_user_dev-ioctl$UI_DEV_SETUP-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
write$uinput_user_dev(r0, 0x0, 0x0)
ioctl$UI_DEV_SETUP(r0, 0x5501, 0x0)
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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-openat$uinput-write$uinput_user_dev-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
r0 = openat$uinput(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
write$uinput_user_dev(r0, 0x0, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m23.698229763s, {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-openat$uinput-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
openat$uinput(0xffffffffffffff9c, &(0x7f00000000c0), 0x2, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m23.698229763s, {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)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program crashed: BUG: workqueue lockup
testing program (duration=6m23.698229763s, {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-timer_create-timer_settime
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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}}): sched_setscheduler-timer_create-timer_settime
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, 0x0, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, 0x0)
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m23.698229763s, {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: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m23.698229763s, {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
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
testing program (duration=6m23.698229763s, {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
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x6)
timer_create(0x0, &(0x7f0000000680)={0x0, 0x21}, &(0x7f0000000000))
timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x989680}}, 0x0)

program did not crash
reproducing took 1h34m49.124777954s
repro crashed as (corrupted=false):
RBP: 00007f0395b35f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0395b35f8c
R13: 0000000000000000 R14: 00007fffed0755e0 R15: 00007fffed0756c8
 </TASK>
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 197s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 197s!
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: kfree_rcu_monitor
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    in-flight: 19:fqdir_free_fn
    pending: psi_avgs_work, vmstat_shepherd, kfree_rcu_monitor
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=5/512 refcnt=7
    in-flight: 43:fsnotify_mark_destroy_workfn, 557:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn
    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=4/256 refcnt=5
    pending: neigh_managed_work, neigh_periodic_work, gc_worker, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_ratelimiter_gc_entries, neigh_periodic_work, neigh_managed_work
workqueue rcu_gp: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: process_srcu
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: srcu_invoke_callbacks
workqueue netns: flags=0xe000a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=3
    in-flight: 10:cleanup_net
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
  pwq 0: cpus=0 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 kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    pending: blk_mq_timeout_work
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 mld: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=9
    pending: mld_ifc_work
    inactive: mld_ifc_work, mld_ifc_work, mld_ifc_work, mld_ifc_work, mld_dad_work, mld_dad_work, mld_ifc_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=19
    pending: mld_ifc_work
    inactive: mld_ifc_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_ifc_work
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=25
    in-flight: 24:addrconf_dad_work
    inactive: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work, addrconf_verify_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=24
    in-flight: 528:addrconf_dad_work
    inactive: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work, addrconf_verify_work, addrconf_verify_work, addrconf_verify_work
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=198s workers=5 idle: 7080 6 493
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=198s workers=5 idle: 664 60 558 39
pool 4: cpus=0-1 flags=0x4 nice=0 hung=198s workers=6 idle: 8 567 512

final repro crashed as (corrupted=false):
RBP: 00007f0395b35f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0395b35f8c
R13: 0000000000000000 R14: 00007fffed0755e0 R15: 00007fffed0756c8
 </TASK>
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 197s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 197s!
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: kfree_rcu_monitor
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    in-flight: 19:fqdir_free_fn
    pending: psi_avgs_work, vmstat_shepherd, kfree_rcu_monitor
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=5/512 refcnt=7
    in-flight: 43:fsnotify_mark_destroy_workfn, 557:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn
    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=4/256 refcnt=5
    pending: neigh_managed_work, neigh_periodic_work, gc_worker, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_ratelimiter_gc_entries, neigh_periodic_work, neigh_managed_work
workqueue rcu_gp: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: process_srcu
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: srcu_invoke_callbacks
workqueue netns: flags=0xe000a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=3
    in-flight: 10:cleanup_net
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
  pwq 0: cpus=0 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 kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    pending: blk_mq_timeout_work
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 mld: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=9
    pending: mld_ifc_work
    inactive: mld_ifc_work, mld_ifc_work, mld_ifc_work, mld_ifc_work, mld_dad_work, mld_dad_work, mld_ifc_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=19
    pending: mld_ifc_work
    inactive: mld_ifc_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_dad_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_ifc_work
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=25
    in-flight: 24:addrconf_dad_work
    inactive: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work, addrconf_verify_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=24
    in-flight: 528:addrconf_dad_work
    inactive: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work, addrconf_verify_work, addrconf_verify_work, addrconf_verify_work
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_encrypt_worker
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=198s workers=5 idle: 7080 6 493
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=198s workers=5 idle: 664 60 558 39
pool 4: cpus=0-1 flags=0x4 nice=0 hung=198s workers=6 idle: 8 567 512