EXT4-fs warning (device loop4): ext4_xattr_inode_create:1468: refuse to create EA inode when umounting ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5839 at fs/ext4/xattr.c:1470 ext4_xattr_inode_create fs/ext4/xattr.c:1470 [inline] WARNING: CPU: 1 PID: 5839 at fs/ext4/xattr.c:1470 ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1588 [inline] WARNING: CPU: 1 PID: 5839 at fs/ext4/xattr.c:1470 ext4_xattr_inode_lookup_create+0x118e/0x1950 fs/ext4/xattr.c:1566 Modules linked in: CPU: 1 UID: 0 PID: 5839 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1470 [inline] RIP: 0010:ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1588 [inline] RIP: 0010:ext4_xattr_inode_lookup_create+0x118e/0x1950 fs/ext4/xattr.c:1566 Code: f8 9f 97 ff e9 4e f6 ff ff e8 8e bd 31 ff 48 c7 c1 00 fb c7 8b ba bc 05 00 00 4c 89 e7 48 c7 c6 c0 02 c8 8b e8 d3 dc fd ff 90 <0f> 0b 90 48 c7 c3 ea ff ff ff e8 63 bd 31 ff 48 8b 95 08 ff ff ff RSP: 0018:ffffc900041df468 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819b00b9 RDX: ffff8880281e0000 RSI: ffffffff82883c81 RDI: 0000000000000005 RBP: ffffc900041df5c8 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff888056444000 R13: ffff88804f4a52a4 R14: ffff88805355bbf8 R15: ffff88805355bbf8 FS: 000055558d1e9500(0000) GS:ffff88812485a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7d5a6c6000 CR3: 000000005a525000 CR4: 0000000000350ef0 Call Trace: ext4_xattr_block_set+0x818/0x3650 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+0x143d/0x1ab0 fs/ext4/xattr.c:2822 __ext4_expand_extra_isize+0x346/0x480 fs/ext4/inode.c:6306 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6349 [inline] __ext4_mark_inode_dirty+0x544/0x870 fs/ext4/inode.c:6427 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6459 __mark_inode_dirty+0x1ee/0xe50 fs/fs-writeback.c:2527 mark_inode_dirty_sync include/linux/fs.h:2603 [inline] iput fs/inode.c:1921 [inline] iput+0xb7/0x880 fs/inode.c:1910 dentry_unlink_inode+0x29c/0x480 fs/dcache.c:466 __dentry_kill+0x1d0/0x600 fs/dcache.c:669 shrink_kill fs/dcache.c:1114 [inline] shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1141 shrink_dcache_parent+0xe1/0x530 fs/dcache.c:1575 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0xa5/0x3e0 fs/dcache.c:1621 generic_shutdown_super+0x6c/0x390 fs/super.c:621 kill_block_super+0x3b/0x90 fs/super.c:1755 ext4_kill_sb+0x6a/0xb0 fs/ext4/super.c:7391 deactivate_locked_super+0xc1/0x1a0 fs/super.c:474 deactivate_super fs/super.c:507 [inline] deactivate_super+0xde/0x100 fs/super.c:503 cleanup_mnt+0x225/0x450 fs/namespace.c:1417 task_work_run+0x150/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xeb/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x3f6/0x4c0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7e2c18fc57 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:00007ffd5e37f6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f7e2c210925 RCX: 00007f7e2c18fc57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd5e37f7a0 RBP: 00007ffd5e37f7a0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd5e380830 R13: 00007f7e2c210925 R14: 0000000000049ae5 R15: 00007ffd5e380870