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kernel BUG at fs/gfs2/quota.c:331!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5339 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~bpo12+1 04/01/2014
RIP: 0010:qd_put+0x18a/0x190 fs/gfs2/quota.c:331
Code: e7 e8 5a 5d 25 fe e9 ee fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 7c 83 48 89 ef e8 31 5e 25 fe e9 76 ff ff ff e8 e7 25 be fd 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d3efb60 EFLAGS: 00010293
RAX: ffffffff84017db9 RBX: ffff888044c15000 RCX: ffff88801f82a480
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001a7df54 R12: ffff888044c15070
R13: ffff88800022c800 R14: ffff888044c15030 R15: 1ffff11008982a0e
FS:  00007f24fa87f6c0(0000) GS:ffff88808d304000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f24fa85dfc8 CR3: 000000003f6d0000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_quota_sync+0x3c4/0x460 fs/gfs2/quota.c:1361
 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:658
 sync_filesystem+0xeb/0x230 fs/sync.c:56
 gfs2_reconfigure+0xbb/0xb20 fs/gfs2/ops_fstype.c:1557
 reconfigure_super+0x224/0x890 fs/super.c:1076
 vfs_cmd_reconfigure fs/fsopen.c:268 [inline]
 vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:297
 __do_sys_fsconfig fs/fsopen.c:473 [inline]
 __se_sys_fsconfig+0x78e/0x8d0 fs/fsopen.c:350
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f24f998eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f24fa87f038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f24f9be6090 RCX: 00007f24f998eec9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000004
RBP: 00007f24f9a11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f24f9be6128 R14: 00007f24f9be6090 R15: 00007ffe6f6b7dc8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qd_put+0x18a/0x190 fs/gfs2/quota.c:331
Code: e7 e8 5a 5d 25 fe e9 ee fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 7c 83 48 89 ef e8 31 5e 25 fe e9 76 ff ff ff e8 e7 25 be fd 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d3efb60 EFLAGS: 00010293
RAX: ffffffff84017db9 RBX: ffff888044c15000 RCX: ffff88801f82a480
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001a7df54 R12: ffff888044c15070
R13: ffff88800022c800 R14: ffff888044c15030 R15: 1ffff11008982a0e
FS:  00007f24fa87f6c0(0000) GS:ffff88808d304000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f24fa85dfc8 CR3: 000000003f6d0000 CR4: 0000000000352ef0