BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 2 UID: 0 PID: 13119 Comm: syz-executor469 Not tainted 6.16.0-rc2-syzkaller-00047-g52da431bf03b #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:1335 __lock_acquire+0xa6/0x1c90 kernel/locking/lockdep.c:5115 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:3909 __flush_workqueue+0x128/0x1230 kernel/workqueue.c:3951 drain_workqueue+0x199/0x3d0 kernel/workqueue.c:4115 destroy_workqueue+0xc2/0xaa0 kernel/workqueue.c:5871 nci_unregister_device+0xc8/0x300 net/nfc/nci/core.c:1316 virtual_ncidev_close+0x4b/0xa0 drivers/nfc/virtual_ncidev.c:172 __fput+0x3ff/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+0x864/0x2bd0 kernel/exit.c:955 do_group_exit+0xd3/0x2a0 kernel/exit.c:1104 __do_sys_exit_group kernel/exit.c:1115 [inline] __se_sys_exit_group kernel/exit.c:1113 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1113 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/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7febb4bb6c39 Code: Unable to access opcode bytes at 0x7febb4bb6c0f. RSP: 002b:00007ffecc0f2cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007febb4bb6c39 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007febb4c31290 R08: ffffffffffffffb8 R09: 00000000000000a0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007febb4c31290 R13: 0000000000000000 R14: 00007febb4c31d00 R15: 00007febb4b87dd0