BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 PID: 32215 Comm: syz-executor.3 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 register_lock_class.cold+0x11/0x19 kernel/locking/lockdep.c:1238
 __lock_acquire+0xff/0x48a0 kernel/locking/lockdep.c:4259
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4959
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:358 [inline]
 netif_addr_lock_bh include/linux/netdevice.h:4244 [inline]
 dev_uc_flush+0x19/0x30 net/core/dev_addr_lists.c:710
 rollback_registered_many+0x801/0xe70 net/core/dev.c:8965
 rollback_registered+0xf2/0x1c0 net/core/dev.c:9000
 unregister_netdevice_queue net/core/dev.c:10087 [inline]
 unregister_netdevice_queue+0x1d7/0x2b0 net/core/dev.c:10080
 unregister_netdevice include/linux/netdevice.h:2754 [inline]
 __tun_detach+0xe42/0x1110 drivers/net/tun.c:690
 tun_detach drivers/net/tun.c:707 [inline]
 tun_chr_close+0xd9/0x180 drivers/net/tun.c:3421
 __fput+0x33e/0x880 fs/file_table.c:281
 task_work_run+0xf4/0x1b0 kernel/task_work.c:123
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x2fa/0x360 arch/x86/entry/common.c:165
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x6b1/0x7d0 arch/x86/entry/common.c:305
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x416651
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:0000000000c9fbe0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416651
RDX: 0000000000000001 RSI: 0000000000790180 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000c9fcd0 R11: 0000000000000293 R12: 0000000000790a88
R13: 00000000000d5d00 R14: ffffffffffffffff R15: 000000000078c04c