gfs2: fsid=loop0.0: first mount done, others may mount
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4559 at fs/gfs2/rgrp.c:2638 gfs2_rbm_from_block fs/gfs2/rgrp.c:279 [inline]
WARNING: CPU: 0 PID: 4559 at fs/gfs2/rgrp.c:2638 gfs2_check_blk_type+0x3fb/0x640 fs/gfs2/rgrp.c:2637
Modules linked in:
CPU: 0 PID: 4559 Comm: syz-executor.0 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:gfs2_check_blk_type+0x3fb/0x640 fs/gfs2/rgrp.c:2638
Code: b6 04 28 84 c0 0f 85 ef 01 00 00 8b 1b 89 df 44 89 e6 e8 28 46 0c fe 44 39 e3 76 24 e8 be 44 0c fe 31 db eb 72 e8 b5 44 0c fe <0f> 0b bb f9 ff ff ff 49 bd 00 00 00 00 00 fc ff df e9 1c 01 00 00
RSP: 0018:ffffc9000334f8a0 EFLAGS: 00010293
RAX: ffffffff836b78b5 RBX: 0000000000000000 RCX: ffff88807e089dc0
RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000013
RBP: ffffc9000334f9b0 R08: dffffc0000000000 R09: fffff52000669f26
R10: fffff52000669f26 R11: 1ffff92000669f25 R12: 0000000000000012
R13: 0000000000000013 R14: ffff88802b422028 R15: 1ffff11005684406
FS:  00007f55cb9e96c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffeb754f058 CR3: 0000000025254000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_inode_lookup+0x5b3/0xd00 fs/gfs2/inode.c:177
 gfs2_lookup_by_inum+0x4e/0xf0 fs/gfs2/inode.c:250
 gfs2_get_dentry fs/gfs2/export.c:139 [inline]
 gfs2_fh_to_dentry+0x12d/0x200 fs/gfs2/export.c:162
 exportfs_decode_fh_raw+0x12a/0x5d0 fs/exportfs/expfs.c:436
 exportfs_decode_fh+0x36/0x70 fs/exportfs/expfs.c:576
 do_handle_to_path fs/fhandle.c:152 [inline]
 handle_to_path fs/fhandle.c:207 [inline]
 do_handle_open+0x3df/0x820 fs/fhandle.c:223
 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: 0033:0x7f55cc667ae9
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:00007f55cb9e90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f55cc786f80 RCX: 00007f55cc667ae9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f55cc6b347a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f55cc786f80 R15: 00007ffc278c53d8
 </TASK>