BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 8617 Comm: syz.7.383 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP 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 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested kernel/sched/core.c:639 [inline] raw_spin_rq_lock kernel/sched/sched.h:1558 [inline] rq_lock kernel/sched/sched.h:1885 [inline] ttwu_queue kernel/sched/core.c:3892 [inline] try_to_wake_up+0x440/0xe24 kernel/sched/core.c:4218 wake_up_process+0x18/0x24 kernel/sched/core.c:4349 kick_pool+0x3e0/0x58c kernel/workqueue.c:1279 __queue_work+0xd90/0x121c kernel/workqueue.c:2336 queue_work_on+0xdc/0x18c kernel/workqueue.c:2386 queue_work include/linux/workqueue.h:669 [inline] loop_queue_work drivers/block/loop.c:863 [inline] loop_queue_rq+0x944/0xaa8 drivers/block/loop.c:1890 __blk_mq_issue_directly block/blk-mq.c:2715 [inline] blk_mq_request_issue_directly+0x2c0/0x560 block/blk-mq.c:2802 blk_mq_issue_direct+0x254/0x558 block/blk-mq.c:2823 blk_mq_dispatch_queue_requests+0x568/0x674 block/blk-mq.c:2898 blk_mq_flush_plug_list+0x370/0x488 block/blk-mq.c:2981 __blk_flush_plug+0x330/0x408 block/blk-core.c:1225 blk_finish_plug+0x68/0x90 block/blk-core.c:1252 xfs_buf_submit_bio fs/xfs/xfs_buf.c:1365 [inline] xfs_buf_submit+0x680/0xa5c fs/xfs/xfs_buf.c:1471 _xfs_buf_read fs/xfs/xfs_buf.c:642 [inline] xfs_buf_read_map+0x2fc/0x9e8 fs/xfs/xfs_buf.c:709 xfs_trans_read_buf_map+0x1bc/0x990 fs/xfs/xfs_trans_buf.c:304 xfs_trans_read_buf fs/xfs/xfs_trans.h:210 [inline] xfs_imap_to_bp+0x100/0x268 fs/xfs/libxfs/xfs_inode_buf.c:139 xfs_inode_item_precommit+0x550/0x8b4 fs/xfs/xfs_inode_item.c:170 xfs_trans_run_precommits fs/xfs/xfs_trans.c:800 [inline] __xfs_trans_commit+0x2a4/0xc18 fs/xfs/xfs_trans.c:843 xfs_trans_commit+0x13c/0x1c4 fs/xfs/xfs_trans.c:928 xfs_create+0x600/0x998 fs/xfs/xfs_inode.c:753 xfs_generic_create+0x2e8/0x8f4 fs/xfs/xfs_iops.c:216 xfs_vn_create+0x44/0x58 fs/xfs/xfs_iops.c:299 lookup_open fs/namei.c:4440 [inline] open_last_lookups fs/namei.c:4540 [inline] path_openat+0x143c/0x3114 fs/namei.c:4784 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