FAT-fs (loop0): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
FAT-fs (loop0): Invalid FSINFO signature: 0x41615252, 0x80417272 (sector = 1)
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 8811 Comm: syz.0.336 Not tainted 6.13.0-rc2-syzkaller-g2e7aff49b5da #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 lookup_chain_cache_add kernel/locking/lockdep.c:3851 [inline]
 validate_chain kernel/locking/lockdep.c:3872 [inline]
 __lock_acquire+0x2070/0x7904 kernel/locking/lockdep.c:5226
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 debug_object_activate+0x80/0x4ac lib/debugobjects.c:818
 debug_work_activate kernel/workqueue.c:664 [inline]
 insert_work+0x4c/0x2d4 kernel/workqueue.c:2180
 __queue_work+0xe20/0x1308 kernel/workqueue.c:2339
 queue_work_on+0xe0/0x1a0 kernel/workqueue.c:2390
 queue_work include/linux/workqueue.h:662 [inline]
 loop_queue_work drivers/block/loop.c:893 [inline]
 loop_queue_rq+0x974/0xadc drivers/block/loop.c:1876
 __blk_mq_issue_directly block/blk-mq.c:2689 [inline]
 blk_mq_request_issue_directly+0x2dc/0x5a0 block/blk-mq.c:2776
 blk_mq_plug_issue_direct+0x264/0x548 block/blk-mq.c:2797
 blk_mq_flush_plug_list+0x654/0x13ac block/blk-mq.c:2908
 __blk_flush_plug+0x388/0x460 block/blk-core.c:1213
 blk_finish_plug block/blk-core.c:1240 [inline]
 __submit_bio+0x3d4/0x4f8 block/blk-core.c:637
 __submit_bio_noacct_mq block/blk-core.c:710 [inline]
 submit_bio_noacct_nocheck+0x3bc/0xcbc block/blk-core.c:739
 submit_bio_noacct+0xc6c/0x166c block/blk-core.c:868
 submit_bio+0x374/0x564 block/blk-core.c:910
 submit_bh_wbc+0x3f8/0x4c8 fs/buffer.c:2814
 submit_bh fs/buffer.c:2819 [inline]
 write_dirty_buffer+0xe0/0x160 fs/buffer.c:2832
 fat_sync_bhs+0x78/0x1b4 fs/fat/misc.c:367
 fat_alloc_clusters+0xa84/0xe80 fs/fat/fatent.c:541
 fat_alloc_new_dir+0x158/0xc2c fs/fat/dir.c:1156
 vfat_mkdir+0x148/0x2f0 fs/fat/namei_vfat.c:859
 vfs_mkdir+0x27c/0x410 fs/namei.c:4311
 do_mkdirat+0x248/0x574 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4347
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600