EXT2-fs (loop3): error: ext2_free_blocks: Freeing blocks not in datazone - block = 29554, count = 1
EXT2-fs (loop3): error: ext2_free_blocks: Freeing blocks not in datazone - block = 65536, count = 1
EXT2-fs (loop3): error: ext2_valid_block_bitmap: Invalid block bitmap - block_group = 0, block = 252
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 7083 Comm: syz.3.486 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 include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 console_lock_spinning_enable+0x74/0xec kernel/printk/printk.c:1812
 console_emit_next_record+0x680/0x954 kernel/printk/printk.c:2774
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x240/0x57c kernel/printk/printk.c:2906
 vprintk_emit+0x14c/0x2dc kernel/printk/printk.c:2303
 vprintk_default+0x54/0x80 kernel/printk/printk.c:2318
 vprintk+0x1e8/0x284 kernel/printk/printk_safe.c:45
 _printk+0xd0/0x118 kernel/printk/printk.c:2328
 ext2_error+0x1cc/0x324 fs/ext2/super.c:70
 ext2_valid_block_bitmap fs/ext2/balloc.c:115 [inline]
 read_block_bitmap+0x594/0x754 fs/ext2/balloc.c:160
 ext2_new_blocks+0x5ec/0x1114 fs/ext2/balloc.c:1304
 ext2_alloc_blocks fs/ext2/inode.c:418 [inline]
 ext2_alloc_branch fs/ext2/inode.c:487 [inline]
 ext2_get_blocks+0xb00/0x1afc fs/ext2/inode.c:730
 ext2_get_block+0xc8/0x3f4 fs/ext2/inode.c:787
 __block_write_begin_int+0x34c/0x13b8 fs/buffer.c:1991
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2041
 ext2_prepare_chunk fs/ext2/dir.c:460 [inline]
 ext2_make_empty+0xdc/0x84c fs/ext2/dir.c:640
 ext2_mkdir+0x130/0x1e4 fs/ext2/namei.c:251
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4114
 do_mkdirat+0x1b4/0x3e0 fs/namei.c:4139
 __do_sys_mkdirat fs/namei.c:4154 [inline]
 __se_sys_mkdirat fs/namei.c:4152 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4152
 __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
EXT2-fs (loop3): error: ext2_check_page: size of directory #12 is not a multiple of chunk size