EXT4-fs warning (device loop5): ext4_xattr_inode_create:1469: refuse to create EA inode when umounting
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9981 at fs/ext4/xattr.c:1470 ext4_xattr_inode_create fs/ext4/xattr.c:1470 [inline]
WARNING: CPU: 0 PID: 9981 at fs/ext4/xattr.c:1470 ext4_xattr_inode_lookup_create+0xa80/0x1c20 fs/ext4/xattr.c:1588
Modules linked in:
CPU: 0 UID: 0 PID: 9981 Comm: syz-executor Not tainted 6.16.0-syzkaller-11322-g352af6a011d5 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1470 [inline]
RIP: 0010:ext4_xattr_inode_lookup_create+0xa80/0x1c20 fs/ext4/xattr.c:1588
Code: 8b 74 24 10 e9 d4 03 00 00 e8 cc df 3a ff 48 89 df 48 c7 c6 bc 74 97 8d ba bd 05 00 00 48 c7 c1 40 df 9f 8b e8 21 28 fc ff 90 <0f> 0b 90 49 c7 c7 ea ff ff ff 4c 8b 74 24 10 e9 bb 03 00 00 48 8d
RSP: 0018:ffffc9000b3ef3e0 EFLAGS: 00010246
RAX: fa090143d0154800 RBX: ffff888050b54000 RCX: fa090143d0154800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000b3ef570 R08: ffffc9000b3eefc7 R09: 1ffff9200167ddf8
R10: dffffc0000000000 R11: fffff5200167ddf9 R12: 1ffff9200167de90
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888031dfb290
FS:  000055558d76c500(0000) GS:ffff888125c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f33d9f216d0 CR3: 0000000052564000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_xattr_block_set+0x223/0x2ac0 fs/ext4/xattr.c:1908
 ext4_xattr_move_to_block fs/ext4/xattr.c:2659 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2734 [inline]
 ext4_expand_extra_isize_ea+0x12d5/0x1ea0 fs/ext4/xattr.c:2822
 __ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6385
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6428 [inline]
 __ext4_mark_inode_dirty+0x46c/0x700 fs/ext4/inode.c:6506
 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6538
 __mark_inode_dirty+0x2d1/0xdf0 fs/fs-writeback.c:2527
 mark_inode_dirty_sync include/linux/fs.h:2614 [inline]
 iput+0x1ee/0x9d0 fs/inode.c:1920
 __dentry_kill+0x209/0x660 fs/dcache.c:669
 shrink_kill+0xa9/0x2c0 fs/dcache.c:1114
 shrink_dentry_list+0x2e0/0x5e0 fs/dcache.c:1141
 shrink_dcache_parent+0xa1/0x2c0 fs/dcache.c:-1
 do_one_tree+0x23/0xe0 fs/dcache.c:1604
 shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1621
 generic_shutdown_super+0x67/0x2c0 fs/super.c:621
 kill_block_super+0x44/0x90 fs/super.c:1766
 ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7391
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1378
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa11658fe97
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:00007ffe0056eb28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa116611bdd RCX: 00007fa11658fe97
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe0056ebe0
RBP: 00007ffe0056ebe0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe0056fc70
R13: 00007fa116611bdd R14: 00000000000b17cf R15: 00007ffe0056fcb0
 </TASK>