gfs2: fsid=syz:syz.0: pid: 4307
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:4307 [syz.0.6] gfs2_glock_nq_init fs/gfs2/glock.h:244 [inline]
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:4307 [syz.0.6] 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: 4307 Comm: syz.0.6 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: 15 5b 52 fe 89 da 41 0f b7 0f 48 c7 c7 a0 9a 6d 8a 4c 89 ee e8 d0 9e 45 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 4f 8a ff ff <0f> 0b e8 28 4f 0d fe e8 03 aa 94 fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc90003f6f8c0 EFLAGS: 00010246
RAX: bf72b0b267083700 RBX: ffff8880606ec018 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff520007edf0c
RBP: 0000000000000000 R08: ffffffff8d89db2f R09: fffff520007edec8
R10: dffffc0000000000 R11: fffffbfff1b13b66 R12: dffffc0000000000
R13: ffff88802ce712c0 R14: ffff8880734b3050 R15: ffff8880734b305a
FS:  00007f65b0d206c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa42fdcf000 CR3: 000000005ff23000 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
 gfs2_reconfigure+0x125/0xd30 fs/gfs2/ops_fstype.c:1551
 reconfigure_super+0x219/0x8a0 fs/super.c:938
 do_remount fs/namespace.c:2697 [inline]
 path_mount+0xd54/0x1030 fs/namespace.c:3356
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f65b2ac5f79
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:00007f65b0d20028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f65b2d3ffa0 RCX: 00007f65b2ac5f79
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f65b2b5c7e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000003376039 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f65b2d40038 R14: 00007f65b2d3ffa0 R15: 00007ffece11ac78
 </TASK>
Modules linked in:
---[ end trace fa13fbe33abbea6e ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline]
RIP: 0010:gfs2_glock_nq+0x1011/0x1550 fs/gfs2/glock.c:1527
Code: 15 5b 52 fe 89 da 41 0f b7 0f 48 c7 c7 a0 9a 6d 8a 4c 89 ee e8 d0 9e 45 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 4f 8a ff ff <0f> 0b e8 28 4f 0d fe e8 03 aa 94 fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc90003f6f8c0 EFLAGS: 00010246
RAX: bf72b0b267083700 RBX: ffff8880606ec018 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff520007edf0c
RBP: 0000000000000000 R08: ffffffff8d89db2f R09: fffff520007edec8
R10: dffffc0000000000 R11: fffffbfff1b13b66 R12: dffffc0000000000
R13: ffff88802ce712c0 R14: ffff8880734b3050 R15: ffff8880734b305a
FS:  00007f65b0d206c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa42fdcf000 CR3: 000000005ff23000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400