loop6: detected capacity change from 0 to 128
EXT4-fs (loop6): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none.
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 1936417647 PID: 8193 Comm: syz.6.238 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #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+0x1fb8/0x77c8 kernel/locking/lockdep.c:5202
 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825
 __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:708
 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:902 [inline]
 loop_queue_rq+0x974/0xadc drivers/block/loop.c:1877
 __blk_mq_issue_directly block/blk-mq.c:2573 [inline]
 blk_mq_request_issue_directly+0x31c/0x568 block/blk-mq.c:2658
 blk_mq_plug_issue_direct+0x200/0x4ec block/blk-mq.c:2679
 blk_mq_flush_plug_list+0x650/0x1350 block/blk-mq.c:2791
 __blk_flush_plug+0x388/0x460 block/blk-core.c:1199
 blk_finish_plug+0x68/0x90 block/blk-core.c:1226
 ext4_do_writepages+0x2ae8/0x317c fs/ext4/inode.c:2775
 ext4_writepages+0x198/0x308 fs/ext4/inode.c:2813
 do_writepages+0x304/0x7cc mm/page-writeback.c:2683
 filemap_fdatawrite_wbc+0x124/0x174 mm/filemap.c:398
 __filemap_fdatawrite_range mm/filemap.c:431 [inline]
 filemap_write_and_wait_range+0x150/0x230 mm/filemap.c:685
 ext4_collapse_range fs/ext4/extents.c:5395 [inline]
 ext4_fallocate+0xa6c/0x19dc fs/ext4/extents.c:4772
 vfs_fallocate+0x484/0x5c0 fs/open.c:333
 ksys_fallocate fs/open.c:356 [inline]
 __do_sys_fallocate fs/open.c:364 [inline]
 __se_sys_fallocate fs/open.c:362 [inline]
 __arm64_sys_fallocate+0xc0/0x110 fs/open.c:362
 __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