syzbot

EXT4-fs warning (device loop0): ext4_xattr_inode_create:1480: refuse to create EA inode when umounting
------------[ cut here ]------------
1
WARNING: fs/ext4/xattr.c:1482 at ext4_xattr_inode_create fs/ext4/xattr.c:1482 [inline], CPU#1: syz-executor/5757
WARNING: fs/ext4/xattr.c:1482 at ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1600 [inline], CPU#1: syz-executor/5757
WARNING: fs/ext4/xattr.c:1482 at ext4_xattr_inode_lookup_create+0x1187/0x1980 fs/ext4/xattr.c:1578, CPU#1: syz-executor/5757
Modules linked in:
CPU: 1 UID: 0 PID: 5757 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1482 [inline]
RIP: 0010:ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1600 [inline]
RIP: 0010:ext4_xattr_inode_lookup_create+0x1187/0x1980 fs/ext4/xattr.c:1578
Code: 9f 0f 91 ff e9 54 f6 ff ff e8 b5 96 21 ff 48 c7 c1 40 a8 cf 8b ba c8 05 00 00 4c 89 e7 48 c7 c6 00 b2 cf 8b e8 ca d9 fd ff 90 <0f> 0b 90 48 c7 c3 ea ff ff ff e8 8a 96 21 ff 48 8b 95 08 ff ff ff
RSP: 0018:ffffc90003abf240 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880317f9f00 RSI: ffffffff82e58282 RDI: fffff52000757e16
RBP: ffffc90003abf3b8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000034545845 R12: ffff8880345cc000
R13: ffff888035e61500 R14: ffff888071380240 R15: 0000000000000000
FS:  0000555585cd3500(0000) GS:ffff88812441b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555585ceea38 CR3: 00000000338f2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_xattr_block_set+0x2aa/0x3660 fs/ext4/xattr.c:1920
 ext4_xattr_move_to_block fs/ext4/xattr.c:2671 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2746 [inline]
 ext4_expand_extra_isize_ea+0x17c6/0x1d70 fs/ext4/xattr.c:2834
 __ext4_expand_extra_isize+0x346/0x480 fs/ext4/inode.c:6486
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6529 [inline]
 __ext4_mark_inode_dirty+0x668/0x880 fs/ext4/inode.c:6607
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6639
 __mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2709
 mark_inode_dirty_sync include/linux/fs.h:2218 [inline]
 sync_lazytime fs/fs-writeback.c:1760 [inline]
 sync_lazytime+0x39b/0x5d0 fs/fs-writeback.c:1752
 iput.part.0+0x207/0x1050 fs/inode.c:2053
 iput+0x35/0x40 fs/inode.c:2037
 dentry_unlink_inode+0x284/0x470 fs/dcache.c:479
 dentry_kill+0x25d/0xc20 fs/dcache.c:826
 shrink_kill fs/dcache.c:1275 [inline]
 shrink_dentry_list+0x1e8/0x310 fs/dcache.c:1292
 shrink_dcache_tree+0x201/0x400 fs/dcache.c:1759
 do_one_tree fs/dcache.c:1795 [inline]
 shrink_dcache_for_umount+0x101/0x6c0 fs/dcache.c:1812
 generic_shutdown_super+0x7e/0x360 fs/super.c:625
 kill_block_super+0x3b/0xa0 fs/super.c:1665
 ext4_kill_sb+0x6a/0xb0 fs/ext4/super.c:7499
 deactivate_locked_super+0xc1/0x1b0 fs/super.c:477
 deactivate_super fs/super.c:510 [inline]
 deactivate_super+0xe7/0x110 fs/super.c:506
 cleanup_mnt+0x21f/0x450 fs/namespace.c:1317
 task_work_run+0x150/0x240 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:70 [inline]
 exit_to_user_mode_loop+0x1d8/0x6f0 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fed54b9e097
Code: a2 c7 05 5c 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffd1c38fef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fed54c322ca RCX: 00007fed54b9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd1c38ffb0
RBP: 00007ffd1c38ffb0 R08: 00007ffd1c390fb0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd1c391040
R13: 00007fed54c322ca R14: 00000000000152d0 R15: 00007ffd1c391080
 </TASK>