watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kworker/1:1:25]
Modules linked in:
irq event stamp: 332864
hardirqs last  enabled at (332863): [<ffff80001197f668>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (332863): [<ffff80001197f668>] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (332864): [<ffff80001197f8b0>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (328240): [<ffff800008020ccc>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (328240): [<ffff800008020ccc>] __do_softirq+0xb5c/0xdb0 kernel/softirq.c:587
softirqs last disabled at (328195): [<ffff8000081b5568>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (328195): [<ffff8000081b5568>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (328195): [<ffff8000081b5568>] __irq_exit_rcu+0x264/0x4d4 kernel/softirq.c:637
CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 5.15.146-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events fqdir_free_fn
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:440 [inline]
pc : smp_call_function_single+0x268/0x4f8 kernel/smp.c:758
lr : csd_lock_wait kernel/smp.c:440 [inline]
lr : smp_call_function_single+0x280/0x4f8 kernel/smp.c:758
sp : ffff800018a479a0
x29: ffff800018a47a50 x28: 1fffe000181a0369 x27: dfff800000000000
x26: ffff700003148f38 x25: ffff800018a479f8 x24: ffff800018a479e8
x23: ffff800018a479e0 x22: ffff0000c0d01b48 x21: 0000000000000011
x20: ffff800018a479e8 x19: 0000000000000000 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000119811d4 x15: 000000000000a000
x14: 1ffff0000292406a x13: 0000000000000000 x12: 0000000000000001
x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff800018a47a00 x4 : ffff800014043e00 x3 : ffff80000840b2d0
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+0x268/0x4f8 kernel/smp.c:758
 rcu_barrier+0x210/0x4b0 kernel/rcu/tree.c:4078
 fqdir_free_fn+0x50/0x18c net/ipv4/inet_fragment.c:163
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:319
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870