EXT4-fs error (device loop1): xattr_find_entry:297: inode #18: comm syz.1.1325: corrupted xattr entries
EXT4-fs (loop1): pa ffff888111d8a2a0: logic 0, phys. 193, len 32
EXT4-fs error (device loop1): ext4_mb_release_inode_pa:4904: group 0, free 8, pa_free 17
------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:4877!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5043 Comm: syz.1.1325 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:ext4_mb_release_inode_pa+0xa8e/0xa90 fs/ext4/mballoc.c:4877
Code: 80 c2 03 38 c2 0f 8c 2f fe ff ff 48 89 df 41 89 ce e8 c6 88 cb ff 44 89 f1 e9 1c fe ff ff e8 d9 0a 8c ff 0f 0b e8 d2 0a 8c ff <0f> 0b 55 48 89 e5 41 57 41 56 53 48 89 fb 49 bf 00 00 00 00 00 fc
RSP: 0018:ffffc90000b76ae0 EFLAGS: 00010287
RAX: ffffffff81ddd68e RBX: 0000000000000fa4 RCX: 0000000000080000
RDX: ffffc900050b4000 RSI: 000000000002ced6 RDI: 000000000002ced7
RBP: ffffc90000b76c30 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200016ed78 R12: 1ffff9200016ed74
R13: dffffc0000000000 R14: 0000000000000060 R15: ffff88812944f000
FS:  00007f9be456f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ca9c71ff8 CR3: 0000000120929000 CR4: 00000000003506a0
Call Trace:
 <TASK>
 ext4_mb_discard_group_preallocations+0xbaa/0xdf0 fs/ext4/mballoc.c:5023
 ext4_mb_discard_preallocations fs/ext4/mballoc.c:5592 [inline]
 ext4_mb_discard_preallocations_should_retry+0x156/0x600 fs/ext4/mballoc.c:5613
 ext4_mb_new_blocks+0x30d7/0x4220 fs/ext4/mballoc.c:5816
 ext4_alloc_branch fs/ext4/indirect.c:340 [inline]
 ext4_ind_map_blocks+0xda7/0x2010 fs/ext4/indirect.c:635
 ext4_map_blocks+0x926/0x1b30 fs/ext4/inode.c:678
 _ext4_get_block+0x1ea/0x540 fs/ext4/inode.c:819
 ext4_get_block+0x39/0x50 fs/ext4/inode.c:836
 ext4_block_write_begin+0x563/0x1160 fs/ext4/inode.c:1104
 ext4_write_begin+0x65a/0x12e0 fs/ext4/ext4_jbd2.h:-1
 generic_perform_write+0x2b7/0x690 mm/filemap.c:3870
 ext4_buffered_write_iter+0x4ed/0x670 fs/ext4/file.c:270
 ext4_file_write_iter+0x440/0x1540 fs/ext4/file.c:-1
 call_write_iter include/linux/fs.h:2212 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x835/0xfd0 fs/read_write.c:594
 ksys_write+0x149/0x250 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 x64_sys_call+0x8ef/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
 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: 0033:0x7f9be5b14e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f9be456f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9be5d8dfa0 RCX: 00007f9be5b14e59
RDX: 000000000208e24b RSI: 0000200000000040 RDI: 0000000000000004
RBP: 00007f9be5baad6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9be5d8e038 R14: 00007f9be5d8dfa0 R15: 00007ffdba0e9338
 </TASK>
Modules linked in:
---[ end trace 739f4a53e9528e80 ]---
RIP: 0010:ext4_mb_release_inode_pa+0xa8e/0xa90 fs/ext4/mballoc.c:4877
Code: 80 c2 03 38 c2 0f 8c 2f fe ff ff 48 89 df 41 89 ce e8 c6 88 cb ff 44 89 f1 e9 1c fe ff ff e8 d9 0a 8c ff 0f 0b e8 d2 0a 8c ff <0f> 0b 55 48 89 e5 41 57 41 56 53 48 89 fb 49 bf 00 00 00 00 00 fc
RSP: 0018:ffffc90000b76ae0 EFLAGS: 00010287
RAX: ffffffff81ddd68e RBX: 0000000000000fa4 RCX: 0000000000080000
RDX: ffffc900050b4000 RSI: 000000000002ced6 RDI: 000000000002ced7
RBP: ffffc90000b76c30 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200016ed78 R12: 1ffff9200016ed74
R13: dffffc0000000000 R14: 0000000000000060 R15: ffff88812944f000
FS:  00007f9be456f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ca9c71ff8 CR3: 0000000120929000 CR4: 00000000003506a0