BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 3033 Comm: syz-executor.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 register_lock_class+0x4a4/0x560 kernel/locking/lockdep.c:1332 __lock_acquire+0x3cb/0x2630 kernel/locking/lockdep.c:5112 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:4003 __flush_workqueue+0x131/0x1200 kernel/workqueue.c:4045 drain_workqueue+0x175/0x3b0 kernel/workqueue.c:4209 destroy_workqueue+0xc3/0xa30 kernel/workqueue.c:5979 nci_unregister_device+0xe3/0x330 net/nfc/nci/core.c:1334 virtual_ncidev_close+0x4b/0xa0 drivers/nfc/virtual_ncidev.c:168 __fput+0x3ff/0xb50 fs/file_table.c:510 fput_close_sync+0x118/0x250 fs/file_table.c:615 __do_sys_close fs/open.c:1507 [inline] __se_sys_close fs/open.c:1492 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1492 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe053e9049e Code: 08 0f 85 55 ed ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 90 41 57 41 56 4d 89 c6 41 55 4d 89 cd 41 54 55 53 48 83 ec 08 RSP: 002b:00007ffc290f7ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000555576e9d4c0 RCX: 00007fe053e9049e RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fe053fad980 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000003bf58 R13: ffffffffffffffff R14: 00007fe053a00000 R15: 000000000003bc17