gfs2: fsid=syz:syz.0: first mount done, others may mount
------------[ cut here ]------------
error
WARNING: fs/gfs2/rgrp.c:2628 at gfs2_check_blk_type+0x2da/0x370 fs/gfs2/rgrp.c:2628, CPU#1: syz.0.17/6465
Modules linked in:
CPU: 1 UID: 0 PID: 6465 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
RIP: 0010:gfs2_check_blk_type+0x2da/0x370 fs/gfs2/rgrp.c:2628
Code: 89 e7 e8 19 a5 f9 ff eb a8 89 44 24 08 89 4c 24 18 e8 5a ff 0a fe 48 63 44 24 08 8b 4c 24 18 e9 ab fe ff ff e8 87 72 9f fd 90 <0f> 0b 90 41 bf f9 ff ff ff e9 6c ff ff ff 41 bf ea ff ff ff e9 6e
RSP: 0018:ffffc90003107910 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff92000620f26 RCX: ffffffff84692464
RDX: ffff888061385b80 RSI: ffffffff846925f9 RDI: ffff888061385b80
RBP: ffffc90003107a20 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff9 R11: 0000000000000000 R12: ffffc90003107970
R13: 0000000000000012 R14: ffff888078a34b28 R15: 00000000fffffff9
FS:  00007f4d6f7ae6c0(0000) GS:ffff888124446000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15fe619000 CR3: 00000000632fc000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_inode_lookup+0x765/0x920 fs/gfs2/inode.c:192
 gfs2_lookup_by_inum+0x48/0x100 fs/gfs2/inode.c:265
 gfs2_get_dentry fs/gfs2/export.c:139 [inline]
 gfs2_fh_to_dentry+0x18e/0x200 fs/gfs2/export.c:160
 exportfs_decode_fh_raw+0x167/0x760 fs/exportfs/expfs.c:457
 do_handle_to_path fs/fhandle.c:274 [inline]
 handle_to_path fs/fhandle.c:397 [inline]
 do_handle_open+0x744/0xce0 fs/fhandle.c:421
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4d6e99aef9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f4d6f7ae028 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f4d6ec05fa0 RCX: 00007f4d6e99aef9
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007f4d6ea2fee0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4d6ec06038 R14: 00007f4d6ec05fa0 R15: 00007ffe69856e08
 </TASK>