BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 31069 Comm: syz.6.10542 Not tainted 6.15.0-rc6-syzkaller-00052-g9f35e33144ae #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 register_lock_class+0x419/0x4c0 kernel/locking/lockdep.c:1333 __lock_acquire+0x99/0x1ba0 kernel/locking/lockdep.c:5110 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] dev_reset_queue+0x160/0x1d0 net/sched/sch_generic.c:1309 netdev_for_each_tx_queue include/linux/netdevice.h:2650 [inline] dev_deactivate_many+0x4e5/0xd50 net/sched/sch_generic.c:1375 __dev_close_many+0x150/0x770 net/core/dev.c:1686 dev_close_many+0x233/0x630 net/core/dev.c:1727 unregister_netdevice_many_notify+0x578/0x26f0 net/core/dev.c:11940 unregister_netdevice_many net/core/dev.c:12034 [inline] unregister_netdevice_queue+0x305/0x3f0 net/core/dev.c:11877 unregister_netdevice include/linux/netdevice.h:3374 [inline] __tun_detach+0x1249/0x1540 drivers/net/tun.c:620 tun_detach drivers/net/tun.c:636 [inline] tun_chr_close+0xc2/0x230 drivers/net/tun.c:3390 __fput+0x402/0xb70 fs/file_table.c:465 task_work_run+0x150/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xafb/0x2c30 kernel/exit.c:953 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1111 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe52258e969 Code: Unable to access opcode bytes at 0x7fe52258e93f. RSP: 002b:00007ffcc6f8ec88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe52258e969 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffcc6f8ecec R08: 00000012c6f8ed7f R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000047d R13: 00000000000927c0 R14: 000000000006d117 R15: 00007ffcc6f8ed40