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:4191 [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:4191 [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: 4191 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline]
RIP: 0010:gfs2_glock_nq+0x1011/0x1550 fs/gfs2/glock.c:1527
Code: d5 5c 52 fe 89 da 41 0f b7 0f 48 c7 c7 e0 9a 6d 8a 4c 89 ee e8 f0 7a 45 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 4f 8a ff ff <0f> 0b e8 a8 58 0d fe e8 23 b6 94 fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc90002f0fa80 EFLAGS: 00010246
RAX: a1f560de957ae300 RBX: ffff888060837b78 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff520005e1f44
RBP: 0000000000000000 R08: ffffffff8d89d8af R09: fffff520005e1f00
R10: dffffc0000000000 R11: fffffbfff1b13b16 R12: dffffc0000000000
R13: ffff88807eb612c0 R14: ffff888024237350 R15: ffff88802423735a
FS:  000055557e76d500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a21ff8 CR3: 0000000063e93000 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:647
 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: 0033:0x7f4ac9f6af17
Code: a2 c7 05 7c 96 24 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:00007ffd7f2fb5b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4ac9fd371f RCX: 00007f4ac9f6af17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd7f2fb670
RBP: 00007ffd7f2fb670 R08: 00007ffd7f2fc670 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd7f2fc700
R13: 00007f4ac9fd371f R14: 0000000000045306 R15: 00007ffd7f2fc740
 </TASK>
Modules linked in:
---[ end trace b7f902a92233ba51 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline]
RIP: 0010:gfs2_glock_nq+0x1011/0x1550 fs/gfs2/glock.c:1527
Code: d5 5c 52 fe 89 da 41 0f b7 0f 48 c7 c7 e0 9a 6d 8a 4c 89 ee e8 f0 7a 45 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 4f 8a ff ff <0f> 0b e8 a8 58 0d fe e8 23 b6 94 fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc90002f0fa80 EFLAGS: 00010246
RAX: a1f560de957ae300 RBX: ffff888060837b78 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff520005e1f44
RBP: 0000000000000000 R08: ffffffff8d89d8af R09: fffff520005e1f00
R10: dffffc0000000000 R11: fffffbfff1b13b16 R12: dffffc0000000000
R13: ffff88807eb612c0 R14: ffff888024237350 R15: ffff88802423735a
FS:  000055557e76d500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a21ff8 CR3: 0000000063e93000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400