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 1ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:331!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5326 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_put+0x1a2/0x1b0 fs/gfs2/quota.c:331
Code: 0b fe e9 da fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 6f ff ff ff 48 89 ef e8 b9 55 0b fe e9 62 ff ff ff e8 ef 88 9e fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000dba7b40 EFLAGS: 00010287
RAX: ffffffff84274b11 RBX: ffff88800baf63f0 RCX: 0000000000100000
RDX: ffffc9000f122000 RSI: 0000000000001c11 RDI: 0000000000001c12
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001b74f50 R12: ffff88800baf6460
R13: dffffc0000000000 R14: ffff88800baf6420 R15: 1ffff1100175ec8c
FS:  00007f5444db26c0(0000) GS:ffff88808c87e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056144f0d0168 CR3: 0000000011ff7000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_quota_sync+0x3cf/0x470 fs/gfs2/quota.c:1362
 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:661
 sync_filesystem+0xee/0x230 fs/sync.c:56
 gfs2_reconfigure+0xbb/0xb20 fs/gfs2/ops_fstype.c:1554
 reconfigure_super+0x227/0x8a0 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0xdc5/0x10e0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5443f9ce59
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:00007f5444db1fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5444215fa0 RCX: 00007f5443f9ce59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007f5444032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000021 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5444216038 R14: 00007f5444215fa0 R15: 00007ffe15bc3fb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331
Code: 0b fe e9 da fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 6f ff ff ff 48 89 ef e8 b9 55 0b fe e9 62 ff ff ff e8 ef 88 9e fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000dba7b40 EFLAGS: 00010287
RAX: ffffffff84274b11 RBX: ffff88800baf63f0 RCX: 0000000000100000
RDX: ffffc9000f122000 RSI: 0000000000001c11 RDI: 0000000000001c12
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001b74f50 R12: ffff88800baf6460
R13: dffffc0000000000 R14: ffff88800baf6420 R15: 1ffff1100175ec8c
FS:  00007f5444db26c0(0000) GS:ffff88808c87e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056144f0d0168 CR3: 0000000011ff7000 CR4: 0000000000352ef0