watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [kworker/u4:1:11]
Modules linked in:
irq event stamp: 1968820
hardirqs last  enabled at (1968819): [<ffff80001231daf0>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (1968819): [<ffff80001231daf0>] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (1968820): [<ffff80001231b7cc>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (1968820): [<ffff80001231b7cc>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (1964544): [<ffff8000081c2ff0>] softirq_handle_end kernel/softirq.c:421 [inline]
softirqs last  enabled at (1964544): [<ffff8000081c2ff0>] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606
softirqs last disabled at (1964507): [<ffff800008020174>] __do_softirq+0x14/0x20 kernel/softirq.c:612
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: netns cleanup_net
pstate: 80400005 (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 : ffff80001d2d73e0
x29: ffff80001d2d7720 x28: 0000000000000000 x27: ffff80001d2d74f8
x26: dfff800000000000 x25: ffff80001d2d7600 x24: ffff700003a5ae98
x23: ffff80001d2d7520 x22: 1fffe000181356f1 x21: ffff0000c09ab788
x20: ffff80001d2d74e8 x19: 0000000000000011 x18: 1fffe00036798976
x17: ffff800015aed000 x16: ffff80001231f9fc x15: ffff0001b3cc4bbc
x14: 1ffff00002b5e0b2 x13: 0000000000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff80001d2d7500 x4 : ffff8000151e8260 x3 : ffff80000844770c
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:4071
 netdev_run_todo+0x324/0xe80 net/core/dev.c:10442
 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:147
 ip_tunnel_delete_nets+0x2b8/0x308 net/ipv4/ip_tunnel.c:1172
 erspan_exit_batch_net+0x30/0x40 net/ipv4/ip_gre.c:1723
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x6b8/0xaec net/core/net_namespace.c:640
 process_one_work+0x804/0x1484 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