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 3 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
gfs2: fsid=syz:syz.0: fatal assertion failed
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:320!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5321 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:__qd_hold fs/gfs2/quota.c:320 [inline]
RIP: 0010:do_qc+0x5c1/0x5e0 fs/gfs2/quota.c:706
Code: 00 00 00 00 00 fc ff df 48 8b 0c 24 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 dd 0c 0f fe 48 8b 44 24 10 48 8b 38 e8 b0 89 08 fd 90 <0f> 0b e8 78 76 a3 fd 48 8b 7c 24 10 e8 9e 89 08 fd 90 0f 0b 66 66
RSP: 0018:ffffc9000f467948 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff1100903268c RCX: 58763b9158a6cc00
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffffffffffffff R08: ffffc9000f4676c7 R09: 1ffff92001e8ced8
R10: dffffc0000000000 R11: fffff52001e8ced9 R12: ffff8880481933f0
R13: ffff888048193460 R14: ffff888048193480 R15: 0000000000000000
FS:  00007f289eb3b6c0(0000) GS:ffff88808ca67000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd87c1fec0 CR3: 000000001205a000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_quota_change+0x466/0x800 fs/gfs2/quota.c:1305
 setattr_chown+0x40b/0x560 fs/gfs2/inode.c:2072
 gfs2_setattr+0x234/0x420 fs/gfs2/inode.c:2124
 notify_change+0xc1a/0xf40 fs/attr.c:556
 chown_common+0x466/0x6b0 fs/open.c:778
 do_fchownat+0x14c/0x250 fs/open.c:806
 __do_sys_lchown fs/open.c:831 [inline]
 __se_sys_lchown fs/open.c:829 [inline]
 __x64_sys_lchown+0x85/0xa0 fs/open.c:829
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f289db9bf79
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:00007f289eb3b028 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007f289de15fa0 RCX: 00007f289db9bf79
RDX: 0000000039323420 RSI: 00000000706d6174 RDI: 00002000000001c0
RBP: 00007f289dc327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f289de16038 R14: 00007f289de15fa0 R15: 00007ffd87c20678
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__qd_hold fs/gfs2/quota.c:320 [inline]
RIP: 0010:do_qc+0x5c1/0x5e0 fs/gfs2/quota.c:706
Code: 00 00 00 00 00 fc ff df 48 8b 0c 24 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 dd 0c 0f fe 48 8b 44 24 10 48 8b 38 e8 b0 89 08 fd 90 <0f> 0b e8 78 76 a3 fd 48 8b 7c 24 10 e8 9e 89 08 fd 90 0f 0b 66 66
RSP: 0018:ffffc9000f467948 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff1100903268c RCX: 58763b9158a6cc00
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffffffffffffff R08: ffffc9000f4676c7 R09: 1ffff92001e8ced8
R10: dffffc0000000000 R11: fffff52001e8ced9 R12: ffff8880481933f0
R13: ffff888048193460 R14: ffff888048193480 R15: 0000000000000000
FS:  00007f289eb3b6c0(0000) GS:ffff88808ca67000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd87c1fec0 CR3: 000000001205a000 CR4: 0000000000352ef0