BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 8998 Comm: syz.7.410 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868 bio_queue_enter block/blk.h:89 [inline] blk_mq_submit_bio+0x9c4/0x21e8 block/blk-mq.c:3164 __submit_bio+0x1d8/0x4d8 block/blk-core.c:637 __submit_bio_noacct_mq block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x274/0x990 block/blk-core.c:755 submit_bio_noacct+0xdc0/0x186c block/blk-core.c:879 submit_bio+0x3b4/0x550 block/blk-core.c:921 xlog_write_iclog+0x458/0x724 fs/xfs/xfs_log.c:1667 xlog_sync+0xa74/0xeec fs/xfs/xfs_log.c:1808 xlog_state_release_iclog+0x3c0/0x834 fs/xfs/xfs_log.c:568 xlog_force_iclog fs/xfs/xfs_log.c:803 [inline] xlog_force_and_check_iclog fs/xfs/xfs_log.c:2815 [inline] xlog_force_lsn+0x5a4/0x720 fs/xfs/xfs_log.c:2987 xfs_log_force_seq+0x1ec/0x4ac fs/xfs/xfs_log.c:3052 xfs_fsync_flush_log fs/xfs/xfs_file.c:119 [inline] xfs_file_fsync+0x3e0/0x788 fs/xfs/xfs_file.c:162 vfs_fsync_range fs/sync.c:188 [inline] vfs_fsync+0x154/0x18c fs/sync.c:202 ovl_sync_file+0x48/0x6c fs/overlayfs/copy_up.c:254 ovl_copy_up_metadata+0x82c/0x9d4 fs/overlayfs/copy_up.c:722 ovl_copy_up_tmpfile fs/overlayfs/copy_up.c:882 [inline] ovl_do_copy_up fs/overlayfs/copy_up.c:986 [inline] ovl_copy_up_one fs/overlayfs/copy_up.c:1189 [inline] ovl_copy_up_flags+0x1730/0x31a4 fs/overlayfs/copy_up.c:1243 ovl_maybe_copy_up+0x108/0x148 fs/overlayfs/copy_up.c:1272 ovl_open+0x128/0x2b4 fs/overlayfs/file.c:210 do_dentry_open+0x68c/0x1154 fs/open.c:962 vfs_open+0x44/0x2d4 fs/open.c:1094 do_open fs/namei.c:4628 [inline] path_openat+0x2890/0x3114 fs/namei.c:4787 do_filp_open+0x18c/0x36c fs/namei.c:4814 do_sys_openat2+0x11c/0x1f0 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1447 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596