loop5: detected capacity change from 0 to 512
EXT4-fs error (device loop5): ext4_validate_block_bitmap:438: comm syz.5.449: bg 0: block 127: padding at end of block bitmap is not set
------------[ cut here ]------------
EA inode 11 i_nlink=2
WARNING: CPU: 1 PID: 6274 at fs/ext4/xattr.c:1021 ext4_xattr_inode_update_ref+0x517/0x570 fs/ext4/xattr.c:1019
Modules linked in:
CPU: 0 PID: 6274 Comm: syz.5.449 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ext4_xattr_inode_update_ref+0x517/0x570 fs/ext4/xattr.c:1019
Code: 7b 40 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 7b e6 a2 ff 49 8b 37 48 c7 c7 e0 6f 1d 8a 44 89 f2 e8 69 db 84 07 <0f> 0b 48 8b 5c 24 10 4c 8b 7c 24 18 4c 8d 6c 24 60 e9 00 fe ff ff
RSP: 0018:ffffc900033bf3a0 EFLAGS: 00010246
RAX: 6d02b73fb6f73900 RBX: ffff88805ef5be70 RCX: 0000000000080000
RDX: ffffc90015a9f000 RSI: 000000000001bcb3 RDI: 000000000001bcb4
RBP: ffffc900033bf490 R08: dffffc0000000000 R09: ffffed1017224f24
R10: ffffed1017224f24 R11: 1ffff11017224f23 R12: dffffc0000000000
R13: ffffc900033bf400 R14: 0000000000000002 R15: ffff88805ef5beb0
FS:  00007f6dd65646c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa99e479198 CR3: 0000000074362000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1044 [inline]
 ext4_xattr_inode_dec_ref_all+0x982/0xf30 fs/ext4/xattr.c:1186
 ext4_xattr_delete_inode+0x9f1/0xbb0 fs/ext4/xattr.c:2921
 ext4_evict_inode+0xc47/0x1080 fs/ext4/inode.c:299
 evict+0x485/0x870 fs/inode.c:647
 ext4_orphan_cleanup+0xaa9/0x12e0 fs/ext4/orphan.c:474
 ext4_fill_super+0x92f0/0x9a60 fs/ext4/super.c:4975
 mount_bdev+0x287/0x3c0 fs/super.c:1400
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x24a/0xa40 fs/namespace.c:3025
 do_mount fs/namespace.c:3368 [inline]
 __do_sys_mount fs/namespace.c:3576 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3553
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6dd82fe34a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6dd6563e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6dd6563ef0 RCX: 00007f6dd82fe34a
RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007f6dd6563eb0
RBP: 0000200000000180 R08: 00007f6dd6563ef0 R09: 0000000000800700
R10: 0000000000800700 R11: 0000000000000246 R12: 00002000000001c0
R13: 00007f6dd6563eb0 R14: 0000000000000473 R15: 0000200000000680
 </TASK>