EXT4-fs warning (device loop2): ext4_xattr_inode_create:1437: refuse to create EA inode when umounting
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4177 at fs/ext4/xattr.c:1438 ext4_xattr_inode_create fs/ext4/xattr.c:1436 [inline]
WARNING: CPU: 1 PID: 4177 at fs/ext4/xattr.c:1438 ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1556 [inline]
WARNING: CPU: 1 PID: 4177 at fs/ext4/xattr.c:1438 ext4_xattr_set_entry+0x26af/0x3d30 fs/ext4/xattr.c:1684
Modules linked in:
CPU: 1 PID: 4177 Comm: syz-executor Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1438 [inline]
RIP: 0010:ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1556 [inline]
RIP: 0010:ext4_xattr_set_entry+0x26af/0x3d30 fs/ext4/xattr.c:1684
Code: 4c 8b 74 24 28 e9 13 06 00 00 e8 9c 33 5e ff 48 89 df 48 c7 c6 71 60 9c 8b ba 9d 05 00 00 48 c7 c1 c0 84 1d 8a e8 61 64 fc ff <0f> 0b 48 c7 c0 ea ff ff ff 4c 8b 74 24 28 e9 f8 05 00 00 48 8d 78
RSP: 0018:ffffc90002faf440 EFLAGS: 00010246
RAX: 3387cc3c00d84c00 RBX: ffff88805d400000 RCX: 3387cc3c00d84c00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90002faf6b0 R08: dffffc0000000000 R09: fffff520005f5dc5
R10: fffff520005f5dc5 R11: 1ffff920005f5dc4 R12: ffff8880607334a0
R13: ffff88807921e450 R14: 0000000000000000 R15: dffffc0000000000
FS:  00005555645ee500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000063681000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_xattr_block_set+0x4f7/0x2d30 fs/ext4/xattr.c:1935
 ext4_xattr_move_to_block fs/ext4/xattr.c:2632 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2707 [inline]
 ext4_expand_extra_isize_ea+0xf4b/0x19a0 fs/ext4/xattr.c:2799
 __ext4_expand_extra_isize+0x301/0x3e0 fs/ext4/inode.c:5886
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5929 [inline]
 __ext4_mark_inode_dirty+0x469/0x700 fs/ext4/inode.c:6007
 ext4_dirty_inode+0xbf/0x100 fs/ext4/inode.c:6039
 __mark_inode_dirty+0x2b0/0xc60 fs/fs-writeback.c:2464
 mark_inode_dirty_sync include/linux/fs.h:2472 [inline]
 iput+0x1c5/0x8a0 fs/inode.c:1792
 __dentry_kill+0x431/0x650 fs/dcache.c:586
 shrink_dentry_list+0x388/0x680 fs/dcache.c:1181
 shrink_dcache_parent+0xa8/0x3a0 fs/dcache.c:-1
 do_one_tree+0x23/0xe0 fs/dcache.c:1662
 shrink_dcache_for_umount+0x65/0x110 fs/dcache.c:1679
 generic_shutdown_super+0x63/0x300 fs/super.c:447
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1139
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc4c4bbcc57
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:00007ffc7e527d58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fc4c4c3d925 RCX: 00007fc4c4bbcc57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc7e527e10
RBP: 00007ffc7e527e10 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc7e528ea0
R13: 00007fc4c4c3d925 R14: 00000000000187d2 R15: 00007ffc7e528ee0
 </TASK>