gfs2: fsid=syz:syz.0: first mount done, others may mount
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6597 at fs/gfs2/rgrp.c:2628 gfs2_check_blk_type+0x2cf/0x340 fs/gfs2/rgrp.c:2628
Modules linked in:
CPU: 0 UID: 0 PID: 6597 Comm: syz-executor Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:gfs2_check_blk_type+0x2cf/0x340 fs/gfs2/rgrp.c:2628
Code: 89 f7 e8 f4 57 f9 ff eb a6 89 44 24 04 89 4c 24 08 e8 d5 08 23 fe 48 63 44 24 04 8b 4c 24 08 e9 aa fe ff ff e8 a2 f9 c0 fd 90 <0f> 0b 90 e9 70 ff ff ff bb ea ff ff ff e9 73 ff ff ff e8 aa 08 23
RSP: 0018:ffffc90003877940 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000fffffff9 RCX: ffffffff83cdcbc9
RDX: ffff88801cb7bc00 RSI: ffffffff83cdcd5e RDI: 0000000000000005
RBP: ffffc90003877a40 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff9 R11: 0000000000000000 R12: 1ffff9200070ef2a
R13: ffff888049176000 R14: ffffc90003877990 R15: 0000000000000012
FS:  00007fa791c146c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa790fa80c0 CR3: 000000002a61e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_inode_lookup+0x6fe/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+0x168/0x890 fs/exportfs/expfs.c:457
 do_handle_to_path fs/fhandle.c:267 [inline]
 handle_to_path fs/fhandle.c:387 [inline]
 do_handle_open+0x557/0x990 fs/fhandle.c:405
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa790e7cee9
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:00007fa791c140c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007fa790fabf80 RCX: 00007fa790e7cee9
RDX: 0000000000000000 RSI: 0000000020012940 RDI: 0000000000000003
RBP: 00007fa790ec949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa790fabf80 R15: 00007ffe9b86a598
 </TASK>