BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 27000 Comm: syz.5.15339 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
register_lock_class+0x2a9/0x2e0 kernel/locking/lockdep.c:1332
__lock_acquire+0xae/0x2cf0 kernel/locking/lockdep.c:5112
lock_acquire+0x107/0x340 kernel/locking/lockdep.c:5868
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
dev_reset_queue+0x138/0x1b0 net/sched/sch_generic.c:1308
netdev_for_each_tx_queue include/linux/netdevice.h:2680 [inline]
dev_deactivate_many+0x720/0xd40 net/sched/sch_generic.c:1374
__dev_close_many+0x152/0x6b0 net/core/dev.c:1740
netif_close_many+0x225/0x410 net/core/dev.c:1781
unregister_netdevice_many_notify+0xb50/0x2340 net/core/dev.c:12353
unregister_netdevice_many net/core/dev.c:12446 [inline]
unregister_netdevice_queue+0x317/0x350 net/core/dev.c:12260
unregister_netdevice include/linux/netdevice.h:3405 [inline]
__tun_detach+0x6d9/0x15d0 drivers/net/tun.c:621
tun_detach drivers/net/tun.c:637 [inline]
tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3436
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
exit_to_user_mode_loop+0xef/0x4e0 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f123658f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcf1254278 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f12367e7da0 RCX: 00007f123658f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f12367e7da0 R08: 0000000000000a00 R09: 00000019f125456f
R10: 00000000003ff3dc R11: 0000000000000246 R12: 00000000001274c6
R13: 00007ffcf1254370 R14: ffffffffffffffff R15: 00007ffcf1254390
tipc: Disabling bearer