loop4: detected capacity change from 0 to 512
EXT4-fs (loop4): encrypted files will use data=ordered instead of data journaling mode
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6935 Comm: syz.4.627 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __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:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162
 __debug_check_no_obj_freed lib/debugobjects.c:968 [inline]
 debug_check_no_obj_freed+0x148/0x46c lib/debugobjects.c:1009
 free_pages_prepare mm/page_alloc.c:1465 [inline]
 free_pcp_prepare mm/page_alloc.c:1509 [inline]
 free_unref_page_prepare+0x71c/0xb18 mm/page_alloc.c:3384
 free_unref_page+0x7c/0x3a0 mm/page_alloc.c:3479
 free_the_page mm/page_alloc.c:754 [inline]
 __free_pages+0x1a4/0x1d0 mm/page_alloc.c:5703
 __free_slab+0x108/0x2a0 mm/slub.c:2021
 free_slab mm/slub.c:2036 [inline]
 discard_slab+0x58/0xdc mm/slub.c:2042
 __unfreeze_partials+0x150/0x190 mm/slub.c:2591
 put_cpu_partial+0x18c/0x1fc mm/slub.c:2667
 __slab_free+0x1a8/0x274 mm/slub.c:3564
 do_slab_free mm/slub.c:3641 [inline]
 ___cache_free+0x16c/0x19c mm/slub.c:3694
 qlink_free+0x5c/0xa4 mm/kasan/quarantine.c:168
 qlist_free_all+0x3c/0xcc mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x124/0x130 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x2c/0x88 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x74/0x43c mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 __kmem_cache_alloc_node+0x278/0x320 mm/slub.c:3398
 kmalloc_trace+0x48/0x94 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 ext4_xattr_move_to_block fs/ext4/xattr.c:2578 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2701 [inline]
 ext4_expand_extra_isize_ea+0xa30/0x15cc fs/ext4/xattr.c:2793
 __ext4_expand_extra_isize+0x298/0x358 fs/ext4/inode.c:5980
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6023 [inline]
 __ext4_mark_inode_dirty+0x3e4/0x790 fs/ext4/inode.c:6101
 ext4_inline_data_truncate+0x634/0x9f8 fs/ext4/inline.c:2063
 ext4_truncate+0x39c/0x1078 fs/ext4/inode.c:4251
 ext4_process_orphan+0x17c/0x2b4 fs/ext4/orphan.c:335
 ext4_orphan_cleanup+0x908/0x104c fs/ext4/orphan.c:470
 __ext4_fill_super fs/ext4/super.c:5530 [inline]
 ext4_fill_super+0x6440/0x68a8 fs/ext4/super.c:5661
 get_tree_bdev+0x358/0x544 fs/super.c:1366
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5691
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3078
 path_mount+0x5b4/0xe78 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
EXT4-fs (loop4): 1 truncate cleaned up
EXT4-fs (loop4): mounted filesystem without journal. Quota mode: none.