loop2: detected capacity change from 0 to 40427
F2FS-fs (loop2): Corrupted extension count (64 + 1 > 64)
F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5581 at kernel/locking/lockdep.c:6325 lockdep_unregister_key+0x4d7/0x520 kernel/locking/lockdep.c:6334
Modules linked in:
CPU: 0 PID: 5581 Comm: syz.2.402 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:lockdep_unregister_key+0x4d7/0x520 kernel/locking/lockdep.c:6325
Code: 80 00 00 00 75 39 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f9 57 5c 08 41 f7 c4 00 02 00 00 74 90 fb 84 db 75 8f eb a0 <0f> 0b e9 44 ff ff ff 0f 0b e9 b0 fe ff ff 0f 0b e9 fd fe ff ff e8
RSP: 0018:ffffc9000393f9c0 EFLAGS: 00010002
RAX: 0000000000000000 RBX: ffff88801a9e1728 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc9000393f940
RBP: ffffc9000393fa90 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000727f28 R12: 0000000000000a06
R13: ffff88801a9e0000 R14: 0000000000000000 R15: 1ffff92000727f3c
FS:  00007fca357e86c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19dbf55000 CR3: 0000000056047000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 f2fs_fill_super+0x3ce4/0x7050 fs/f2fs/super.c:4536
 mount_bdev+0x28a/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+0x247/0xa40 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: 0033:0x7fca375900ca
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:00007fca357e7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fca357e7ee0 RCX: 00007fca375900ca
RDX: 0000200000000140 RSI: 0000200000000000 RDI: 00007fca357e7ea0
RBP: 0000200000000140 R08: 00007fca357e7ee0 R09: 000000000080401c
R10: 000000000080401c R11: 0000000000000246 R12: 0000200000000000
R13: 00007fca357e7ea0 R14: 0000000000005531 R15: 0000200000000040
 </TASK>