watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u4:6:4415]
Modules linked in:
irq event stamp: 5936968
hardirqs last  enabled at (5936967): [<ffff80001215f9a8>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (5936967): [<ffff80001215f9a8>] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (5936968): [<ffff80001215d684>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (5936968): [<ffff80001215d684>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (5932482): [<ffff800008020d7c>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (5932482): [<ffff800008020d7c>] __do_softirq+0xc1c/0xe38 kernel/softirq.c:600
softirqs last disabled at (5932247): [<ffff80000802a99c>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
CPU: 0 PID: 4415 Comm: kworker/u4:6 Not tainted 6.1.89-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: netns cleanup_net
pstate: 80401005 (Nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:424 [inline]
pc : smp_call_function_single+0x40c/0x21f0 kernel/smp.c:787
lr : csd_lock_wait kernel/smp.c:424 [inline]
lr : smp_call_function_single+0x424/0x21f0 kernel/smp.c:787
sp : ffff80001f947660
x29: ffff80001f9479a0 x28: 0000000000000000 x27: ffff80001f947778
x26: dfff800000000000 x25: ffff80001f947880 x24: ffff700003f28ee8
x23: ffff80001f9477a0 x22: 1fffe0001a31ea69 x21: ffff0000d18f5348
x20: ffff80001f947768 x19: 0000000000000011 x18: ffff80001f946f20
x17: ffff8000188de000 x16: ffff8000121618dc x15: ffff8000183c3f80
x14: 1ffff00002b0a0b0 x13: 0000000000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff80001f947780 x4 : ffff800014f6c4e0 x3 : ffff80000844ee20
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_single+0x40c/0x21f0 kernel/smp.c:787
 rcu_barrier+0x2fc/0x5c4 kernel/rcu/tree.c:4070
 cleanup_net+0x674/0x994 net/core/net_namespace.c:612
 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864