BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 10494 Comm: syz.7.2187 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __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:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b30/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xc4/0x14c kernel/locking/spinlock.c:162
 try_to_wake_up+0x60/0xa64 kernel/sched/core.c:4030
 wake_up_process+0x18/0x24 kernel/sched/core.c:4215
 wake_up_worker kernel/workqueue.c:859 [inline]
 insert_work+0x2b4/0x388 kernel/workqueue.c:1381
 __queue_work+0xb30/0x1054 kernel/workqueue.c:1532
 queue_work_on+0xc4/0x17c kernel/workqueue.c:1559
 queue_work include/linux/workqueue.h:512 [inline]
 loop_queue_work drivers/block/loop.c:1068 [inline]
 loop_queue_rq+0x97c/0xac0 drivers/block/loop.c:2202
 __blk_mq_issue_directly block/blk-mq.c:2014 [inline]
 __blk_mq_try_issue_directly+0x3e8/0x69c block/blk-mq.c:2070
 blk_mq_try_issue_directly+0xb8/0x270 block/blk-mq.c:2101
 blk_mq_submit_bio+0xcf8/0x1698 block/blk-mq.c:-1
 __submit_bio+0x5ec/0x624 block/blk-core.c:917
 __submit_bio_noacct_mq block/blk-core.c:997 [inline]
 submit_bio_noacct+0x52c/0x624 block/blk-core.c:1027
 submit_bio+0x374/0x5e0 block/blk-core.c:1089
 submit_bh_wbc+0x4a8/0x5f8 fs/buffer.c:3056
 submit_bh+0x3c/0x54 fs/buffer.c:3062
 __ext4_read_bh fs/ext4/super.c:156 [inline]
 ext4_read_bh+0x170/0x2a0 fs/ext4/super.c:180
 ext4_read_inode_bitmap+0x64c/0xfdc fs/ext4/ialloc.c:197
 __ext4_new_inode+0xd08/0x32b0 fs/ext4/ialloc.c:1059
 ext4_mkdir+0x328/0xa40 fs/ext4/namei.c:3066
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4065
 do_mkdirat+0x1bc/0x508 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
EXT4-fs error (device loop7): ext4_do_update_inode:5203: inode #2: comm syz.7.2187: corrupted inode contents
EXT4-fs error (device loop7): ext4_dirty_inode:6039: inode #2: comm syz.7.2187: mark_inode_dirty error
EXT4-fs error (device loop7): ext4_do_update_inode:5203: inode #2: comm syz.7.2187: corrupted inode contents
EXT4-fs error (device loop7): __ext4_ext_dirty:183: inode #2: comm syz.7.2187: mark_inode_dirty error
EXT4-fs error (device loop7): ext4_do_update_inode:5203: inode #2: comm syz.7.2187: corrupted inode contents
EXT4-fs error (device loop7): ext4_dirty_inode:6039: inode #2: comm syz.7.2187: mark_inode_dirty error