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:4814 [syz-executor] gfs2_glock_nq_init fs/gfs2/glock.h:244 [inline]
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:4814 [syz-executor] do_sync+0x3d5/0xc40 fs/gfs2/quota.c:921
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1503!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4814 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline]
RIP: 0010:gfs2_glock_nq+0x1011/0x1550 fs/gfs2/glock.c:1527
Code: 35 4a 52 fe 89 da 41 0f b7 0f 48 c7 c7 20 9d 6d 8a 4c 89 ee e8 a0 df 45 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 4f 8a ff ff <0f> 0b e8 c8 3e 0d fe e8 d3 9a 94 fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc900032dfa80 EFLAGS: 00010246
RAX: 3361e1ac79eda400 RBX: ffff8880602a5c38 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff5200065bf44
RBP: 0000000000000000 R08: ffffffff8d89e36f R09: fffff5200065bf00
R10: dffffc0000000000 R11: fffffbfff1b13c6e R12: dffffc0000000000
R13: ffff88807b7112c0 R14: ffff888067b68050 R15: ffff888067b6805a
FS:  00005555685e7500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555568602a28 CR3: 000000002c9b8000 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:246 [inline]
 do_sync+0x3dd/0xc40 fs/gfs2/quota.c:921
 gfs2_quota_sync+0x32c/0x700 fs/gfs2/quota.c:1329
 gfs2_sync_fs+0x48/0xb0 fs/gfs2/super.c:651
 sync_filesystem+0xe6/0x220 fs/sync.c:56
 generic_shutdown_super+0x6b/0x300 fs/super.c:448
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x42d/0x4e0 fs/namespace.c:1148
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f428f689157
Code: a2 c7 05 3c 84 23 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:00007ffc0ed69a18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f428f71c33b RCX: 00007f428f689157
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc0ed69ad0
RBP: 00007ffc0ed69ad0 R08: 00007ffc0ed6aad0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc0ed6ab60
R13: 00007f428f71c33b R14: 000000000001eafd R15: 00007ffc0ed6aba0
 </TASK>
Modules linked in:
---[ end trace ecc64cebe730509f ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline]
RIP: 0010:gfs2_glock_nq+0x1011/0x1550 fs/gfs2/glock.c:1527
Code: 35 4a 52 fe 89 da 41 0f b7 0f 48 c7 c7 20 9d 6d 8a 4c 89 ee e8 a0 df 45 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 4f 8a ff ff <0f> 0b e8 c8 3e 0d fe e8 d3 9a 94 fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc900032dfa80 EFLAGS: 00010246
RAX: 3361e1ac79eda400 RBX: ffff8880602a5c38 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff5200065bf44
RBP: 0000000000000000 R08: ffffffff8d89e36f R09: fffff5200065bf00
R10: dffffc0000000000 R11: fffffbfff1b13c6e R12: dffffc0000000000
R13: ffff88807b7112c0 R14: ffff888067b68050 R15: ffff888067b6805a
FS:  00005555685e7500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555568602a28 CR3: 000000002c9b8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400