BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 23326 Comm: syz-executor251 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 register_lock_class+0x2aa/0x2e0 kernel/locking/lockdep.c:1376 __lock_acquire+0x10c/0x2de0 kernel/locking/lockdep.c:5162 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4111 __flush_workqueue+0x148/0x1470 kernel/workqueue.c:4153 drain_workqueue+0xce/0x380 kernel/workqueue.c:4317 destroy_workqueue+0xbb/0xc60 kernel/workqueue.c:6155 nci_unregister_device+0xd1/0x250 net/nfc/nci/core.c:1334 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:168 __fput+0x42a/0xa80 fs/file_table.c:512 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x73a/0x2360 kernel/exit.c:1012 do_group_exit+0x22d/0x2f0 kernel/exit.c:1155 __do_sys_exit_group kernel/exit.c:1166 [inline] __se_sys_exit_group kernel/exit.c:1164 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1164 x64_sys_call+0x18c6/0x18d0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe921266bc5 Code: Unable to access opcode bytes at 0x7fe921266b9b. RSP: 002b:00007fff7bf7afe8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe921266bc5 RDX: 00000000000000e7 RSI: ffffffffffffffd8 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 00007fe921300100 R14: 00007fe9213023a8 R15: 00007fe9213023c0