BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6355 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 rcu_note_context_switch+0x28c/0x1064 kernel/rcu/tree_plugin.h:326
 __schedule+0x2a4/0x1b18 kernel/sched/core.c:6460
 preempt_schedule_notrace+0xc4/0x168 kernel/sched/core.c:6823
 rcu_is_watching+0xf4/0x134 kernel/rcu/tree.c:722
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0xe0/0x644 kernel/locking/lockdep.c:5633
 rcu_lock_acquire+0x40/0x4c include/linux/rcupdate.h:350
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 kernfs_should_drain_open_files+0x24/0x2c0 fs/kernfs/file.c:827
 kernfs_drain+0x214/0x5e4 fs/kernfs/dir.c:493
 __kernfs_remove+0x3bc/0x658 fs/kernfs/dir.c:1461
 kernfs_remove_by_name_ns+0xe0/0x184 fs/kernfs/dir.c:1667
 kernfs_remove_by_name include/linux/kernfs.h:622 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0xf8/0x288 fs/sysfs/group.c:288
 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:312
 __kobject_del+0x90/0x2d4 lib/kobject.c:587
 kobject_del+0x48/0x68 lib/kobject.c:619
 xfs_sysfs_del fs/xfs/xfs_sysfs.h:51 [inline]
 xfs_log_unmount+0x144/0x194 fs/xfs/xfs_log.c:1109
 xfs_unmountfs+0x1ac/0x248 fs/xfs/xfs_mount.c:1096
 xfs_fs_put_super+0x78/0x260 fs/xfs/xfs_super.c:1118
 generic_shutdown_super+0x130/0x324 fs/super.c:501
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xe8/0x108 fs/super.c:363
 cleanup_mnt+0x37c/0x404 fs/namespace.c:1182
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1189
 task_work_run+0x1ec/0x270 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x1f70/0x2b0c arch/arm64/kernel/signal.c:1137
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585