gfs2: fsid=syz:syz.0: first mount done, others may mount
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6201 at fs/gfs2/rgrp.c:2628 gfs2_check_blk_type+0x44e/0x690 fs/gfs2/rgrp.c:2628
Modules linked in:
CPU: 1 UID: 0 PID: 6201 Comm: syz-executor.0 Not tainted 6.15.0-rc2-syzkaller-00471-g119009db2674 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:gfs2_check_blk_type+0x44e/0x690 fs/gfs2/rgrp.c:2628
Code: db 01 00 00 8b 1b 89 df 44 89 f6 e8 5c eb 99 fd 44 39 f3 76 2f 4c 89 74 24 10 e8 8d e9 99 fd 45 31 f6 eb 72 e8 83 e9 99 fd 90 <0f> 0b 90 41 bf f9 ff ff ff 4c 8d 2d 72 8c 3f 0f 48 8b 5c 24 18 e9
RSP: 0018:ffffc90002ef78a0 EFLAGS: 00010293
RAX: ffffffff8428d2f1 RBX: ffff888026ff2028 RCX: ffff888031510000
RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000013
RBP: ffffc90002ef79b0 R08: ffffffff8428d2e7 R09: 1ffff1100f17eddc
R10: dffffc0000000000 R11: ffffed100f17eddd R12: 1ffff11004dfe406
R13: ffff888026ff2000 R14: 0000000000000012 R15: 0000000000000013
FS:  00007f54fd7236c0(0000) GS:ffff88812509a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f54fcba80c0 CR3: 00000000344d8000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_inode_lookup+0xb22/0xcb0 fs/gfs2/inode.c:178
 gfs2_lookup_by_inum+0x51/0xf0 fs/gfs2/inode.c:251
 gfs2_get_dentry fs/gfs2/export.c:139 [inline]
 gfs2_fh_to_dentry+0x13a/0x1f0 fs/gfs2/export.c:160
 exportfs_decode_fh_raw+0x17f/0x770 fs/exportfs/expfs.c:455
 do_handle_to_path+0xba/0x1b0 fs/fhandle.c:257
 handle_to_path fs/fhandle.c:385 [inline]
 do_handle_open+0x886/0xb40 fs/fhandle.c:403
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f54fca7de69
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:00007f54fd7230c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f54fcbabf80 RCX: 00007f54fca7de69
RDX: 0000000000000000 RSI: 0000000020012940 RDI: 0000000000000003
RBP: 00007f54fcaca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f54fcbabf80 R15: 00007ffd1909eba8
 </TASK>