EXT4-fs error (device loop6): ext4_map_blocks:635: inode #11: block 530: comm syz.6.1935: lblock 4 mapped to illegal pblock 530 (length 1)
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EA inode 11 i_nlink=2
WARNING: CPU: 1 PID: 13189 at fs/ext4/xattr.c:1005 ext4_xattr_inode_update_ref+0x4bd/0x510 fs/ext4/xattr.c:1003
Modules linked in:
CPU: 1 PID: 13189 Comm: syz.6.1935 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_xattr_inode_update_ref+0x4bd/0x510 fs/ext4/xattr.c:1003
Code: 7c 24 40 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 a4 ce 9b ff 49 8b 37 48 c7 c7 c0 a0 a0 8a 89 da e8 f3 55 16 ff <0f> 0b 4c 8b 64 24 08 4c 8b 7c 24 10 e9 a9 fe ff ff e8 bd c5 f4 07
RSP: 0018:ffffc9000d6ff2e0 EFLAGS: 00010246
RAX: 5cbaf0d093879700 RBX: 0000000000000002 RCX: 0000000000080000
RDX: ffffc9000f35b000 RSI: 000000000002711f RDI: 0000000000027120
RBP: ffffc9000d6ff3d0 R08: ffff8880b8e279db R09: 1ffff110171c4f3b
R10: dffffc0000000000 R11: ffffed10171c4f3c R12: ffff888072503ee0
R13: 1ffff1100e4a081b R14: dffffc0000000000 R15: ffff888072503f20
FS:  00007fa30cc9c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4c216e3ff8 CR3: 000000002e50e000 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:1028 [inline]
 ext4_xattr_inode_dec_ref_all+0xb03/0x1060 fs/ext4/xattr.c:1174
 ext4_xattr_delete_inode+0xad1/0xca0 fs/ext4/xattr.c:2895
 ext4_evict_inode+0xc45/0x1110 fs/ext4/inode.c:296
 evict+0x4c9/0x8d0 fs/inode.c:705
 ext4_orphan_cleanup+0xbeb/0x1420 fs/ext4/orphan.c:472
 __ext4_fill_super fs/ext4/super.c:5556 [inline]
 ext4_fill_super+0x7829/0x7dc0 fs/ext4/super.c:5687
 get_tree_bdev+0x3f1/0x610 fs/super.c:1366
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3078
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa30bd9bf4a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa30cc9be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa30cc9bee0 RCX: 00007fa30bd9bf4a
RDX: 0000200000000180 RSI: 00002000000001c0 RDI: 00007fa30cc9bea0
RBP: 0000200000000180 R08: 00007fa30cc9bee0 R09: 0000000000800718
R10: 0000000000800718 R11: 0000000000000246 R12: 00002000000001c0
R13: 00007fa30cc9bea0 R14: 0000000000000482 R15: 0000200000000200
 </TASK>