EXT4-fs warning (device loop3): ext4_xattr_inode_create:1478: refuse to create EA inode when umounting ------------[ cut here ]------------ WARNING: fs/ext4/xattr.c:1479 at ext4_xattr_inode_create fs/ext4/xattr.c:1477 [inline], CPU#1: syz-executor/6658 WARNING: fs/ext4/xattr.c:1479 at ext4_xattr_inode_lookup_create+0x874/0x17ac fs/ext4/xattr.c:1597, CPU#1: syz-executor/6658 Modules linked in: CPU: 1 UID: 0 PID: 6658 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ext4_xattr_inode_create fs/ext4/xattr.c:1477 [inline] pc : ext4_xattr_inode_lookup_create+0x874/0x17ac fs/ext4/xattr.c:1597 lr : ext4_xattr_inode_create fs/ext4/xattr.c:1477 [inline] lr : ext4_xattr_inode_lookup_create+0x874/0x17ac fs/ext4/xattr.c:1597 sp : ffff80009da97100 x29: ffff80009da97260 x28: ffff0000f8d84fc0 x27: 0000000000000001 x26: 0000000000000000 x25: 1fffe0001f1b09f8 x24: ffff0000f8d84f98 x23: ffff700013b52e34 x22: 0000000000000000 x21: dfff800000000000 x20: ffff0000db3a0068 x19: ffff0000db3a0000 x18: 1fffe00033781890 x17: 6572203a38373431 x16: ffff800082e5c71c x15: 0000000000000001 x14: 1ffff00013b52d74 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700013b52d75 x10: 0000000000ff0100 x9 : 1c3d1f49f3e00d00 x8 : 1c3d1f49f3e00d00 x7 : ffff800080575c38 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807f0b34 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000066 Call trace: ext4_xattr_inode_create fs/ext4/xattr.c:1477 [inline] (P) ext4_xattr_inode_lookup_create+0x874/0x17ac fs/ext4/xattr.c:1597 (P) ext4_xattr_block_set+0x1bc/0x24bc fs/ext4/xattr.c:1917 ext4_xattr_move_to_block fs/ext4/xattr.c:2668 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2743 [inline] ext4_expand_extra_isize_ea+0xeb8/0x1830 fs/ext4/xattr.c:2831 __ext4_expand_extra_isize+0x2a0/0x37c fs/ext4/inode.c:6349 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6392 [inline] __ext4_mark_inode_dirty+0x3a8/0x6fc fs/ext4/inode.c:6470 ext4_dirty_inode+0xd4/0x104 fs/ext4/inode.c:6502 __mark_inode_dirty+0x358/0x15bc fs/fs-writeback.c:2587 mark_inode_dirty_sync include/linux/fs.h:2200 [inline] iput+0x36c/0xfdc fs/inode.c:1984 dentry_unlink_inode+0x384/0x45c fs/dcache.c:467 __dentry_kill+0x170/0x594 fs/dcache.c:670 shrink_kill+0xd4/0x2cc fs/dcache.c:1137 shrink_dentry_list+0x31c/0x6cc fs/dcache.c:1164 shrink_dcache_tree+0xc0/0x290 fs/dcache.c:-1 do_one_tree+0x30/0xf4 fs/dcache.c:1644 shrink_dcache_for_umount+0xa0/0x168 fs/dcache.c:1661 generic_shutdown_super+0x68/0x2b8 fs/super.c:621 kill_block_super+0x44/0x90 fs/super.c:1722 ext4_kill_sb+0x68/0xa4 fs/ext4/super.c:7444 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1318 __cleanup_mnt+0x20/0x30 fs/namespace.c:1325 task_work_run+0x1dc/0x260 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:44 [inline] exit_to_user_mode_loop+0x10c/0x18c kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x26c arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 553382 hardirqs last enabled at (553381): [] irqentry_exit+0x1b4/0x2f4 kernel/entry/common.c:219 hardirqs last disabled at (553382): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (553374): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (553372): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-001000000000.