BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Workqueue: netns cleanup_net
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 __flush_work+0x10c/0x1ec kernel/workqueue.c:3072
 flush_work+0x24/0x38 kernel/workqueue.c:3097
 flush_all_backlogs net/core/dev.c:5955 [inline]
 unregister_netdevice_many+0x7f8/0x177c net/core/dev.c:10973
 ip_tunnel_delete_nets+0x2d0/0x32c net/ipv4/ip_tunnel.c:1157
 ipgre_exit_batch_net+0x30/0x40 net/ipv4/ip_gre.c:1033
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x650/0xa84 net/core/net_namespace.c:640
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850