EXT4-fs error (device loop0): ext4_fill_super:4943: inode #2: comm syz-executor.0: iget: root inode unallocated
EXT4-fs (loop0): get root inode failed
EXT4-fs (loop0): mount failed
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: print_daily_error_info+0x0/0x1f0 fs/ext4/super.c:1334
WARNING: CPU: 1 PID: 19469 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 19469 Comm: syz-executor.0 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 80 eb 9e 89 4c 89 ee 48 c7 c7 80 df 9e 89 e8 c6 01 f6 04 <0f> 0b 83 05 e5 f1 40 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc90002b979b8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815b6b15 RDI: fffff52000572f29
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815afcee R11: 0000000000000000 R12: ffffffff894d8a40
R13: ffffffff899ee5c0 R14: ffffffff8161c730 R15: dffffc0000000000
FS:  00007f47d43f3700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f832000 CR3: 0000000011b05000 CR4: 0000000000350ef0
Call Trace:
 __debug_check_no_obj_freed lib/debugobjects.c:987 [inline]
 debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018
 slab_free_hook mm/slub.c:1539 [inline]
 slab_free_freelist_hook+0x107/0x150 mm/slub.c:1580
 slab_free mm/slub.c:3142 [inline]
 kfree+0xdb/0x3b0 mm/slub.c:4124
 ext4_fill_super+0x84f/0xde80 fs/ext4/super.c:5175
 mount_bdev+0x34d/0x410 fs/super.c:1366
 legacy_get_tree+0x105/0x220 fs/fs_context.c:592
 vfs_get_tree+0x89/0x2f0 fs/super.c:1496
 do_new_mount fs/namespace.c:2878 [inline]
 path_mount+0x13ad/0x20c0 fs/namespace.c:3208
 do_mount fs/namespace.c:3221 [inline]
 __do_sys_mount fs/namespace.c:3429 [inline]
 __se_sys_mount fs/namespace.c:3406 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3406
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x460c6a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f47d43f2a78 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f47d43f2b10 RCX: 0000000000460c6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f47d43f2ad0
RBP: 00007f47d43f2ad0 R08: 00007f47d43f2b10 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 00000000200002c0