gfs2: fsid=syz:syz.0: new: gfs2_quota_sync+0x355/0x780 fs/gfs2/quota.c:1329
gfs2: fsid=syz:syz.0: pid: 24894
gfs2: fsid=syz:syz.0: lock type: 8 req lock state : 1
gfs2: fsid=syz:syz.0: G:  s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:24894 [syz-executor] gfs2_quota_sync+0x355/0x780 fs/gfs2/quota.c:1329
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1560!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 24894 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:add_to_queue fs/gfs2/glock.c:1560 [inline]
RIP: 0010:gfs2_glock_nq+0x11fd/0x14d0 fs/gfs2/glock.c:1585
Code: f9 76 39 fe 41 0f b7 0e 48 c7 c7 a0 88 d2 8a 4c 89 e6 89 da e8 54 55 8d 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 03 79 ff ff <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 64 ef ff ff 4c 89 f7
RSP: 0018:ffffc9000610f9f8 EFLAGS: 00010246
RAX: 4d8369bc3d458b00 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff52000c21f34
RBP: ffff88807e5f2028 R08: ffffffff8e20b46f R09: fffff52000c21ef0
R10: dffffc0000000000 R11: fffffbfff1c4168e R12: ffff8880778b5270
R13: ffff88807e5f2030 R14: ffff88807e5f205a R15: ffff88807e5f2018
FS:  0000555587967500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bbde501950 CR3: 000000005c264000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:255 [inline]
 do_sync+0x3ea/0xbb0 fs/gfs2/quota.c:921
 gfs2_quota_sync+0x355/0x780 fs/gfs2/quota.c:1329
 gfs2_sync_fs+0x48/0xb0 fs/gfs2/super.c:664
 sync_filesystem+0xe6/0x220 fs/sync.c:56
 generic_shutdown_super+0x6b/0x340 fs/super.c:474
 kill_block_super+0x7c/0xe0 fs/super.c:1481
 deactivate_locked_super+0x93/0xf0 fs/super.c:332
 cleanup_mnt+0x471/0x4f0 fs/namespace.c:1191
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 __syscall_exit_to_user_mode_work kernel/entry/common.c:295 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:306
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3fc659f397
Code: a2 c7 05 5c 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffdb5f79a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3fc66344bb RCX: 00007f3fc659f397
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb5f79b40
RBP: 00007ffdb5f79b40 R08: 00007ffdb5f7ab40 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdb5f7abd0
R13: 00007f3fc66344bb R14: 0000000000103630 R15: 00007ffdb5f7ac10
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1560 [inline]
RIP: 0010:gfs2_glock_nq+0x11fd/0x14d0 fs/gfs2/glock.c:1585
Code: f9 76 39 fe 41 0f b7 0e 48 c7 c7 a0 88 d2 8a 4c 89 e6 89 da e8 54 55 8d 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 03 79 ff ff <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 64 ef ff ff 4c 89 f7
RSP: 0018:ffffc9000610f9f8 EFLAGS: 00010246
RAX: 4d8369bc3d458b00 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff52000c21f34
RBP: ffff88807e5f2028 R08: ffffffff8e20b46f R09: fffff52000c21ef0
R10: dffffc0000000000 R11: fffffbfff1c4168e R12: ffff8880778b5270
R13: ffff88807e5f2030 R14: ffff88807e5f205a R15: ffff88807e5f2018
FS:  0000555587967500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bbde501950 CR3: 000000005c264000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400