EXT4-fs warning (device loop0): ext4_xattr_inode_create:1485: refuse to create EA inode when umounting ------------[ cut here ]------------ 1 WARNING: fs/ext4/xattr.c:1486 at ext4_xattr_inode_create fs/ext4/xattr.c:1486 [inline], CPU#1: syz-executor292/5646 WARNING: fs/ext4/xattr.c:1486 at ext4_xattr_inode_lookup_create+0xb70/0x1d70 fs/ext4/xattr.c:1604, CPU#1: syz-executor292/5646 Modules linked in: CPU: 1 UID: 0 PID: 5646 Comm: syz-executor292 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026 RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1486 [inline] RIP: 0010:ext4_xattr_inode_lookup_create+0xb70/0x1d70 fs/ext4/xattr.c:1604 Code: 10 e9 81 03 00 00 4d 89 ec e8 0c ea 1c ff 48 89 df 48 c7 c6 82 6e 44 8e ba cd 05 00 00 48 c7 c1 00 31 28 8c e8 11 0d fc ff 90 <0f> 0b 90 49 be 00 00 00 00 00 fc ff df 4c 8b 6c 24 18 43 c6 44 35 RSP: 0018:ffffc900038cf180 EFLAGS: 00010246 RAX: aca463bf5e4c9c00 RBX: ffff888037f8c000 RCX: aca463bf5e4c9c00 RDX: 0000000000000000 RSI: 8000000000000000 RDI: 0000000000000000 RBP: ffffc900038cf310 R08: ffffc900038cedc7 R09: 1ffff92000719db8 R10: dffffc0000000000 R11: fffff52000719db9 R12: ffff888013367810 R13: ffff888013367810 R14: 0000000000000000 R15: ffff888013367838 FS: 0000555591f6f400(0000) GS:ffff888123b48000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9b58fd5fc CR3: 0000000074ad1000 CR4: 0000000000350ef0 Call Trace: ext4_xattr_block_set+0x223/0x2990 fs/ext4/xattr.c:1924 ext4_xattr_move_to_block fs/ext4/xattr.c:2673 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2748 [inline] ext4_expand_extra_isize_ea+0x111b/0x1ec0 fs/ext4/xattr.c:2836 __ext4_expand_extra_isize+0x30d/0x400 fs/ext4/inode.c:6570 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6623 [inline] __ext4_mark_inode_dirty+0x4e3/0x7b0 fs/ext4/inode.c:6701 ext4_dirty_inode+0xd0/0x110 fs/ext4/inode.c:6733 __mark_inode_dirty+0x3a8/0x13b0 fs/fs-writeback.c:2741 mark_inode_dirty_sync include/linux/fs.h:2213 [inline] sync_lazytime+0x19a/0x4c0 fs/fs-writeback.c:1773 iput+0x1fd/0xf00 fs/inode.c:2045 dentry_kill+0x1b9/0x910 fs/dcache.c:840 shrink_kill fs/dcache.c:1289 [inline] shrink_dentry_list+0x209/0x310 fs/dcache.c:1306 shrink_dcache_tree+0xe7/0x410 fs/dcache.c:1741 do_one_tree+0x1a/0xe0 fs/dcache.c:1811 shrink_dcache_for_umount+0x111/0x510 fs/dcache.c:1833 generic_shutdown_super+0x6f/0x2d0 fs/super.c:729 kill_block_super+0x44/0xa0 fs/super.c:1914 ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7537 deactivate_locked_super+0xbe/0x110 fs/super.c:586 cleanup_mnt+0x204/0x2a0 fs/namespace.c:1396 task_work_run+0x1d9/0x260 kernel/task_work.c:233 ptrace_notify+0x258/0x290 kernel/signal.c:2597 ptrace_report_syscall include/linux/ptrace.h:416 [inline] ptrace_report_syscall_exit+0x2d/0x50 include/linux/ptrace.h:477 arch_ptrace_report_syscall_exit include/linux/entry-common.h:240 [inline] syscall_exit_work include/linux/entry-common.h:273 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:304 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:341 [inline] do_syscall_64+0x4a0/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe9b589e2b7 Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 d4 17 09 00 00 00 00 00 eb 96 e8 81 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffe25df5b78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000014a3e RCX: 00007fe9b589e2b7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe25df5c30 RBP: 00007ffe25df5c30 R08: 00007ffe25df6c30 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe25df6ca0 R13: 0000555591f70770 R14: 431bde82d7b634db R15: 00007ffe25df6cc0