EXT4-fs error (device loop4): ext4_validate_block_bitmap:441: comm syz.4.416: bg 0: block 127: padding at end of block bitmap is not set
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EA inode 11 i_nlink=2
WARNING: CPU: 0 PID: 8609 at fs/ext4/xattr.c:1053 ext4_xattr_inode_update_ref+0x444/0x488 fs/ext4/xattr.c:1051
Modules linked in:
CPU: 0 UID: 0 PID: 8609 Comm: syz.4.416 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ext4_xattr_inode_update_ref+0x444/0x488 fs/ext4/xattr.c:1051
lr : ext4_xattr_inode_update_ref+0x444/0x488 fs/ext4/xattr.c:1051
sp : ffff80009dd26f80
x29: ffff80009dd27000 x28: 0000000000000000 x27: 1fffe0001ebca427
x26: dfff800000000000 x25: ffff80009dd26f80 x24: ffff700013ba4df0
x23: ffff800092e12000 x22: ffff0000f5e51f88 x21: 0000000000000002
x20: 0000000000000001 x19: ffff0000f5e51f48 x18: 00000000ffffffff
x17: ffff800093524000 x16: ffff80008b0142f8 x15: 0000000000000001
x14: 1ffff00013ba4d60 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000001bb1b x9 : eefc854c5b872b00
x8 : eefc854c5b872b00 x7 : ffff800080563d30 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807de9b0
x2 : 0000000000000002 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 ext4_xattr_inode_update_ref+0x444/0x488 fs/ext4/xattr.c:1051 (P)
 ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1076 [inline]
 ext4_xattr_inode_dec_ref_all+0x76c/0xbfc fs/ext4/xattr.c:1218
 ext4_xattr_delete_inode+0x8b0/0xa40 fs/ext4/xattr.c:2942
 ext4_evict_inode+0xb98/0x1084 fs/ext4/inode.c:271
 evict+0x414/0x928 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput+0x6e4/0x83c fs/inode.c:1923
 ext4_process_orphan+0x240/0x2b4 fs/ext4/orphan.c:360
 ext4_orphan_cleanup+0x930/0x107c fs/ext4/orphan.c:474
 __ext4_fill_super fs/ext4/super.c:5609 [inline]
 ext4_fill_super+0x4724/0x4ea4 fs/ext4/super.c:5728
 get_tree_bdev_flags+0x360/0x414 fs/super.c:1692
 get_tree_bdev+0x2c/0x3c fs/super.c:1715
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5760
 vfs_get_tree+0x90/0x28c fs/super.c:1815
 do_new_mount+0x278/0x7f4 fs/namespace.c:3808
 path_mount+0x5b4/0xde0 fs/namespace.c:4123
 do_mount fs/namespace.c:4136 [inline]
 __do_sys_mount fs/namespace.c:4347 [inline]
 __se_sys_mount fs/namespace.c:4324 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4324
 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 2654
hardirqs last  enabled at (2653): [<ffff80008b011834>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:86 [inline]
hardirqs last  enabled at (2653): [<ffff80008b011834>] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:96
hardirqs last disabled at (2654): [<ffff80008b00ebb4>] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574
softirqs last  enabled at (2648): [<ffff8000803d8b60>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (2648): [<ffff8000803d8b60>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607
softirqs last disabled at (1793): [<ffff800080022028>] __do_softirq+0x14/0x20 kernel/softirq.c:613
---[ end trace 0000000000000000 ]---
EXT4-fs (loop4): 1 orphan inode deleted
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.