gfs2: fsid=syz:syz.0: first mount done, others may mount
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6595 at fs/gfs2/rgrp.c:2628 gfs2_check_blk_type+0x2d2/0x360 fs/gfs2/rgrp.c:2628
Modules linked in:
CPU: 1 UID: 0 PID: 6595 Comm: syz-executor Not tainted 6.16.0-rc5-syzkaller-00266-g3f31a806a62e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:gfs2_check_blk_type+0x2d2/0x360 fs/gfs2/rgrp.c:2628
Code: 89 e7 e8 71 3c f9 ff eb a8 89 44 24 08 89 4c 24 10 e8 02 b9 17 fe 48 63 44 24 08 8b 4c 24 10 e9 ab fe ff ff e8 8f d4 b1 fd 90 <0f> 0b 90 e9 72 ff ff ff 41 bf ea ff ff ff e9 74 ff ff ff e8 d6 b8
RSP: 0018:ffffc9000409f930 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff92000813f2a RCX: ffffffff840a1bac
RDX: ffff888021b03c00 RSI: ffffffff840a1d41 RDI: 0000000000000005
RBP: ffffc9000409fa40 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff9 R11: 1ffffffff1cb9fa1 R12: ffffc9000409f990
R13: 0000000000000012 R14: ffff88807e876000 R15: 00000000fffffff9
FS:  00007f25a64036c0(0000) GS:ffff88812481a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f25a57a80c0 CR3: 000000006e316000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_inode_lookup+0x6fc/0x8a0 fs/gfs2/inode.c:178
 gfs2_lookup_by_inum+0x48/0x100 fs/gfs2/inode.c:251
 gfs2_get_dentry fs/gfs2/export.c:139 [inline]
 gfs2_fh_to_dentry+0x1a4/0x200 fs/gfs2/export.c:160
 exportfs_decode_fh_raw+0x167/0x8b0 fs/exportfs/expfs.c:456
 do_handle_to_path fs/fhandle.c:257 [inline]
 handle_to_path fs/fhandle.c:385 [inline]
 do_handle_open+0x75e/0xb70 fs/fhandle.c:403
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25a567cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f25a64030c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f25a57abf80 RCX: 00007f25a567cee9
RDX: 0000000000000000 RSI: 0000000020012940 RDI: 0000000000000003
RBP: 00007f25a56c949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f25a57abf80 R15: 00007ffd235ddda8
 </TASK>