watchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:15:5802]
Modules linked in:
irq event stamp: 6951372
hardirqs last  enabled at (6951371): [<ffff800011a3a8bc>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (6951371): [<ffff800011a3a8bc>] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (6951372): [<ffff800011a38a04>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (6951372): [<ffff800011a38a04>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (6933324): [<ffff8000081ac394>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (6933324): [<ffff8000081ac394>] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624
softirqs last disabled at (6933283): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
CPU: 0 PID: 5802 Comm: kworker/u4:15 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: events_unbound toggle_allocation_gate
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:424 [inline]
pc : smp_call_function_many_cond+0x1358/0x142c kernel/smp.c:998
lr : csd_lock_wait kernel/smp.c:424 [inline]
lr : smp_call_function_many_cond+0x1370/0x142c kernel/smp.c:998
sp : ffff8000213e7830
x29: ffff8000213e7890 x28: 0000000000000001 x27: ffff80001521d000
x26: 0000000000000011 x25: ffff800015220f40 x24: ffff00019f5461c0
x23: 1fffe00033ea8c38 x22: dfff800000000000 x21: ffff00019f56ba08
x20: 0000000000000001 x19: ffff80001541a4a0 x18: 00000000a0ac4cab
x17: dfff800000000000 x16: ffff8000082d92bc x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe00033ead741 x12: 0000000000ff0100
x11: ff00800008408a48 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008408a3c
x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001
Call trace:
 __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:252 [inline]
 __cmpwait arch/arm64/include/asm/cmpxchg.h:278 [inline]
 csd_lock_wait kernel/smp.c:424 [inline]
 smp_call_function_many_cond+0x1358/0x142c kernel/smp.c:998
 smp_call_function_many kernel/smp.c:1021 [inline]
 smp_call_function kernel/smp.c:1043 [inline]
 kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1189
 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34
 __jump_label_update+0x30c/0x334 kernel/jump_label.c:518
 jump_label_update+0x304/0x3b4 kernel/jump_label.c:864
 static_key_enable_cpuslocked+0x11c/0x220 kernel/jump_label.c:207
 static_key_enable+0x24/0x38 kernel/jump_label.c:220
 toggle_allocation_gate+0xc8/0x42c mm/kfence/core.c:821
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850