Extracting prog: 9m20.208322023s
Minimizing prog: 1h11m2.08809327s
Simplifying prog options: 17m56.15691972s
Extracting C: 5m9.959547181s
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: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}}): prlimit64-sched_setscheduler-sendmmsg$unix-syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
sendmmsg$unix(0xffffffffffffffff, &(0x7f00000bd000), 0x318, 0x0)
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 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: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}}): prlimit64-sched_setscheduler-sendmmsg$unix-syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
sendmmsg$unix(0xffffffffffffffff, &(0x7f00000bd000), 0x318, 0x0)
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=8m55.624774107s, {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}}): prlimit64-sched_setscheduler-sendmmsg$unix-syz_io_uring_setup-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
sendmmsg$unix(0xffffffffffffffff, &(0x7f00000bd000), 0x318, 0x0)
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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}}): prlimit64-sched_setscheduler-sendmmsg$unix-syz_io_uring_setup-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
sendmmsg$unix(0xffffffffffffffff, &(0x7f00000bd000), 0x318, 0x0)
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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}}): prlimit64-sched_setscheduler-sendmmsg$unix-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
sendmmsg$unix(0xffffffffffffffff, &(0x7f00000bd000), 0x318, 0x0)
io_uring_enter(0xffffffffffffffff, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(0xffffffffffffffff, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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}}): prlimit64-sched_setscheduler-syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=8m55.624774107s, {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}}): prlimit64-syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x100008b}, 0x0)
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, 0x0, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, 0x0, &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), 0x0)
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
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=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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: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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
testing program (duration=8m55.624774107s, {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}}): syz_io_uring_setup-io_uring_enter-io_uring_enter
detailed listing:
executing program 0:
r0 = syz_io_uring_setup(0x24f5, &(0x7f0000000080)={0x0, 0x0, 0x10100}, &(0x7f0000000100), &(0x7f0000000000))
io_uring_enter(r0, 0x0, 0x400000, 0x1, 0x0, 0x0)
io_uring_enter(r0, 0x52e, 0x0, 0x0, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
reproducing took 2h0m45.727411358s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 6799 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: wg-crypt-wg2 wg_packet_encrypt_worker
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:557 [inline]
 try_to_wake_up+0x6c/0xe24 kernel/sched/core.c:4216
 wake_up_process+0x18/0x24 kernel/sched/core.c:4459
 kick_pool+0x3e0/0x58c kernel/workqueue.c:1283
 __queue_work+0xdbc/0x1210 kernel/workqueue.c:2340
 queue_work_on+0xdc/0x18c kernel/workqueue.c:2390
 wg_queue_enqueue_per_peer_tx+0x1d8/0x3f4 drivers/net/wireguard/queueing.h:188
 wg_packet_encrypt_worker+0xec4/0x11e0 drivers/net/wireguard/send.c:305
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 6799 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: wg-crypt-wg2 wg_packet_encrypt_worker
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:557 [inline]
 try_to_wake_up+0x6c/0xe24 kernel/sched/core.c:4216
 wake_up_process+0x18/0x24 kernel/sched/core.c:4459
 kick_pool+0x3e0/0x58c kernel/workqueue.c:1283
 __queue_work+0xdbc/0x1210 kernel/workqueue.c:2340
 queue_work_on+0xdc/0x18c kernel/workqueue.c:2390
 wg_queue_enqueue_per_peer_tx+0x1d8/0x3f4 drivers/net/wireguard/queueing.h:188
 wg_packet_encrypt_worker+0xec4/0x11e0 drivers/net/wireguard/send.c:305
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844