loop4: detected capacity change from 0 to 512 ------------[ cut here ]------------ EA inode 11 i_nlink=0 WARNING: CPU: 1 PID: 4400 at fs/ext4/xattr.c:1006 ext4_xattr_inode_update_ref+0x4e7/0x540 fs/ext4/xattr.c:1004 Modules linked in: CPU: 1 PID: 4400 Comm: syz.4.48 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:ext4_xattr_inode_update_ref+0x4e7/0x540 fs/ext4/xattr.c:1004 Code: 7c 24 40 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 7a e7 a1 ff 49 8b 37 48 c7 c7 80 9d 3d 8a 89 da e8 69 6d 95 07 <0f> 0b 4c 8b 64 24 08 4c 8b 7c 24 10 e9 a9 fe ff ff e8 93 5d a0 07 RSP: 0018:ffffc9000132f140 EFLAGS: 00010246 RAX: 9722800b871af800 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000eb09000 RSI: 000000000002dbde RDI: 000000000002dbdf RBP: ffffc9000132f230 R08: ffff8880b912795b R09: 1ffff11017224f2b R10: dffffc0000000000 R11: ffffed1017224f2c R12: ffff8880742d5260 R13: 1ffff1100e85aa8b R14: dffffc0000000000 R15: ffff8880742d52a0 FS: 00007f79b26726c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffbb27392f8 CR3: 0000000060c6f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1029 [inline] ext4_xattr_set_entry+0xed9/0x3ea0 fs/ext4/xattr.c:1685 ext4_xattr_ibody_set+0x112/0x330 fs/ext4/xattr.c:2238 ext4_xattr_move_to_block fs/ext4/xattr.c:2625 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2693 [inline] ext4_expand_extra_isize_ea+0x10d3/0x19b0 fs/ext4/xattr.c:2781 __ext4_expand_extra_isize+0x301/0x3e0 fs/ext4/inode.c:5924 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5967 [inline] __ext4_mark_inode_dirty+0x469/0x700 fs/ext4/inode.c:6045 ext4_evict_inode+0xa8d/0x1090 fs/ext4/inode.c:284 evict+0x4c9/0x8d0 fs/inode.c:647 ext4_orphan_cleanup+0xad2/0x1320 fs/ext4/orphan.c:472 ext4_fill_super+0x8d6e/0x94f0 fs/ext4/super.c:5006 mount_bdev+0x287/0x3c0 fs/super.c:1400 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3034 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f79b441a04a Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f79b2671e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f79b2671ee0 RCX: 00007f79b441a04a RDX: 0000200000000180 RSI: 0000200000000000 RDI: 00007f79b2671ea0 RBP: 0000200000000180 R08: 00007f79b2671ee0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000 R13: 00007f79b2671ea0 R14: 000000000000047a R15: 0000200000000080