EXT4-fs warning (device loop7): ext4_xattr_inode_create:1478: refuse to create EA inode when umounting
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WARNING: fs/ext4/xattr.c:1479 at ext4_xattr_inode_create fs/ext4/xattr.c:1479 [inline], CPU#0: syz-executor/10898
WARNING: fs/ext4/xattr.c:1479 at ext4_xattr_inode_lookup_create+0xab5/0x1c20 fs/ext4/xattr.c:1597, CPU#0: syz-executor/10898
Modules linked in:
CPU: 0 UID: 0 PID: 10898 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1479 [inline]
RIP: 0010:ext4_xattr_inode_lookup_create+0xab5/0x1c20 fs/ext4/xattr.c:1597
Code: 8b 74 24 10 e9 71 03 00 00 e8 97 5d 35 ff 48 89 df 48 c7 c6 da 98 75 8d ba c6 05 00 00 48 c7 c1 00 8b 80 8b e8 0c 1a fc ff 90 <0f> 0b 90 49 c7 c7 ea ff ff ff 4c 8b 74 24 10 e9 58 03 00 00 48 8d
RSP: 0018:ffffc900041df3a0 EFLAGS: 00010246
RAX: 1a8f517a3d2b7a00 RBX: ffff88807ca66000 RCX: 1a8f517a3d2b7a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc900041df530 R08: ffffc900041defe7 R09: 1ffff9200083bdfc
R10: dffffc0000000000 R11: fffff5200083bdfd R12: 1ffff9200083be88
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880542e45f8
FS:  00005555751a9500(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555751c45c8 CR3: 00000000943c5000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_xattr_block_set+0x223/0x2ac0 fs/ext4/xattr.c:1917
 ext4_xattr_move_to_block fs/ext4/xattr.c:2668 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2743 [inline]
 ext4_expand_extra_isize_ea+0x12da/0x1ea0 fs/ext4/xattr.c:2831
 __ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6349
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6392 [inline]
 __ext4_mark_inode_dirty+0x45c/0x6e0 fs/ext4/inode.c:6470
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6502
 __mark_inode_dirty+0x390/0x1330 fs/fs-writeback.c:2587
 mark_inode_dirty_sync include/linux/fs.h:2200 [inline]
 iput+0x3e8/0x1030 fs/inode.c:1984
 __dentry_kill+0x209/0x660 fs/dcache.c:670
 shrink_kill+0xa9/0x2c0 fs/dcache.c:1137
 shrink_dentry_list+0x2e0/0x5e0 fs/dcache.c:1164
 shrink_dcache_tree+0xca/0x2e0 fs/dcache.c:-1
 do_one_tree+0x28/0xe0 fs/dcache.c:1644
 shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661
 generic_shutdown_super+0x67/0x2c0 fs/super.c:621
 kill_block_super+0x44/0x90 fs/super.c:1722
 ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7444
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xef/0x4e0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2570990a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff9d225088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f2570a13d7d RCX: 00007f2570990a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff9d225140
RBP: 00007fff9d225140 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff9d2261d0
R13: 00007f2570a13d7d R14: 00000000000b6ab0 R15: 00007fff9d226210
 </TASK>