loop0: detected capacity change from 0 to 32768
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
loop0: detected capacity change from 32768 to 0
------------[ cut here ]------------
error
WARNING: fs/gfs2/rgrp.c:2628 at gfs2_check_blk_type+0x458/0x690 fs/gfs2/rgrp.c:2628, CPU#0: syz.0.0/5318
Modules linked in:
CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:gfs2_check_blk_type+0x458/0x690 fs/gfs2/rgrp.c:2628
Code: e0 01 00 00 8b 1b 89 df 44 89 f6 e8 d2 e5 74 fd 4d 89 f5 44 39 f3 76 2e e8 b5 e3 74 fd 31 db e9 84 00 00 00 e8 a9 e3 74 fd 90 <0f> 0b 90 bb f9 ff ff ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24
RSP: 0018:ffffc9000f137860 EFLAGS: 00010287
RAX: ffffffff8452f744 RBX: 0000000000000d00 RCX: 0000000000100000
RDX: ffffc9000e7e9000 RSI: 00000000000002ec RDI: 00000000000002ed
RBP: ffffc9000f137950 R08: ffff888013284327 R09: 1ffff11002650864
R10: dffffc0000000000 R11: ffffed1002650865 R12: ffff88804416c960
R13: 000000020000001c R14: ffffc9000f1378a0 R15: 1ffff1100882d932
FS:  00007f88eafe56c0(0000) GS:ffff88808c2c7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000013440 CR3: 0000000012a9c000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_inode_lookup+0xacb/0xc30 fs/gfs2/inode.c:192
 gfs2_lookup_by_inum+0x52/0x100 fs/gfs2/inode.c:265
 gfs2_get_dentry fs/gfs2/export.c:139 [inline]
 gfs2_fh_to_dentry+0x136/0x1f0 fs/gfs2/export.c:160
 exportfs_decode_fh_raw+0x1c8/0x770 fs/exportfs/expfs.c:456
 do_handle_to_path+0xa4/0x1a0 fs/fhandle.c:274
 handle_to_path fs/fhandle.c:409 [inline]
 do_handle_open+0x6d2/0xae0 fs/fhandle.c:433
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f88ea19e159
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:00007f88eafe4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f88ea425fa0 RCX: 00007f88ea19e159
RDX: 0000000000202000 RSI: 0000200000013440 RDI: 0000000000000005
RBP: 00007f88ea23503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f88ea426038 R14: 00007f88ea425fa0 R15: 00007ffc4f576c68
 </TASK>