watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [kworker/1:2:2485]
Modules linked in:
irq event stamp: 179202
hardirqs last  enabled at (179201): [<ffff8000111bacfc>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (179201): [<ffff8000111bacfc>] exit_to_kernel_mode+0xe0/0x168 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (179202): [<ffff8000111baf54>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (174062): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (174062): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (174009): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (174009): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (174009): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (174009): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
CPU: 1 PID: 2485 Comm: kworker/1:2 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: events fqdir_free_fn
pstate: 82400005 (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 : ffff8000260b79a0
x29: ffff8000260b7a30 x28: 1fffe00019e2c369 x27: dfff800000000000
x26: ffff700004c16f34 x25: 0000000000000000 x24: 0000000000000001
x23: ffff8000260b79c0 x22: ffff0000cf161b48 x21: 0000000000000011
x20: ffff8000260b79c8 x19: 0000000000000000 x18: 0000000000000001
x17: ffff80000f6e3740 x16: ffff8000111bc798 x15: ffff80000ff605a8
x14: 00000000ffff8000 x13: 0000000000000000 x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff8000260b79e0 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
 fqdir_free_fn+0x50/0x18c net/ipv4/inet_fragment.c:166
 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