watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/0:11:4447]
Modules linked in:
irq event stamp: 196850
hardirqs last  enabled at (196849): [<ffff8000111bacfc>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (196849): [<ffff8000111bacfc>] exit_to_kernel_mode+0xe0/0x168 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (196850): [<ffff8000111baf54>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (192800): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (192800): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (192703): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (192703): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (192703): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (192703): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
CPU: 0 PID: 4447 Comm: kworker/0:11 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events bpf_map_free_deferred
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:440 [inline]
pc : smp_call_function_single+0x224/0x4a8 kernel/smp.c:758
lr : csd_lock_wait kernel/smp.c:440 [inline]
lr : smp_call_function_single+0x23c/0x4a8 kernel/smp.c:758
sp : ffff80001f7e7900
x29: ffff80001f7e7990 x28: 1fffe00018448a39 x27: dfff800000000000
x26: ffff700003efcf20 x25: 0000000000000000 x24: 0000000000000001
x23: ffff80001f7e7920 x22: ffff0000c22451c8 x21: 0000000000000011
x20: ffff80001f7e7928 x19: 0000000000000000 x18: 1fffff7ffdfe2e6e
x17: 1fffff7ffdfe2e6e x16: ffff8000111bc798 x15: ffff80001420eda0
x14: fffffbffeff17380 x13: 0000000000000000 x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff80001f7e7940 x4 : ffff800013b5ae80 x3 : ffff8000083cc24c
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:440 [inline]
 smp_call_function_single+0x224/0x4a8 kernel/smp.c:758
 rcu_barrier+0x140/0x49c kernel/rcu/tree.c:4082
 htab_map_free+0x38/0x518 kernel/bpf/hashtab.c:1473
 bpf_map_free_deferred+0x2ac/0x3e8 kernel/bpf/syscall.c:479
 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:855