gfs2: fsid=syz:syz.0: G:  s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:6 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:4457 [syz.1.42] gfs2_glock_nq_init fs/gfs2/glock.h:244 [inline]
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:4457 [syz.1.42] do_sync+0x3b0/0xc00 fs/gfs2/quota.c:921
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1503!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4457 Comm: syz.1.42 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: b5 f1 57 fe 89 da 41 0f b7 0f 48 c7 c7 40 8f 4d 8a 4c 89 ee e8 10 2c 33 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 bf 8b ff ff <0f> 0b e8 08 89 13 fe e8 d3 37 9c fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc900033bf8a0 EFLAGS: 00010246
RAX: a44f9a86e7008800 RBX: ffff88805fd2bb78 RCX: 0000000000080000
RDX: ffffc90004323000 RSI: 00000000000496db RDI: 00000000000496dc
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad26b6
R10: fffffbfff1ad26b6 R11: 1ffffffff1ad26b5 R12: dffffc0000000000
R13: ffff88801bc6d2c0 R14: ffff888058595e50 R15: ffff888058595e5a
FS:  00007f937eab06c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ac6899d58 CR3: 000000005f7f3000 CR4: 00000000003506f0
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+0x3b8/0xc00 fs/gfs2/quota.c:921
 gfs2_quota_sync+0x32c/0x6f0 fs/gfs2/quota.c:1329
 gfs2_sync_fs+0x48/0xb0 fs/gfs2/super.c:647
 sync_filesystem+0xe6/0x220 fs/sync.c:56
 gfs2_reconfigure+0x120/0xcd0 fs/gfs2/ops_fstype.c:1551
 reconfigure_super+0x219/0x880 fs/super.c:938
 do_remount fs/namespace.c:2697 [inline]
 path_mount+0xd3e/0x1020 fs/namespace.c:3356
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2d6/0x3c0 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: 0033:0x7f9380849749
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:00007f937eab0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9380a9ffa0 RCX: 00007f9380849749
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007f93808cdf91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002390024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9380aa0038 R14: 00007f9380a9ffa0 R15: 00007fffa738f308
 </TASK>
Modules linked in:
---[ end trace 124cc850ff5aa2e3 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1503 [inline]
RIP: 0010:gfs2_glock_nq+0x1011/0x1550 fs/gfs2/glock.c:1527
Code: b5 f1 57 fe 89 da 41 0f b7 0f 48 c7 c7 40 8f 4d 8a 4c 89 ee e8 10 2c 33 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 bf 8b ff ff <0f> 0b e8 08 89 13 fe e8 d3 37 9c fd e9 14 fa ff ff 4c 8d 7b 08 4d
RSP: 0018:ffffc900033bf8a0 EFLAGS: 00010246
RAX: a44f9a86e7008800 RBX: ffff88805fd2bb78 RCX: 0000000000080000
RDX: ffffc90004323000 RSI: 00000000000496db RDI: 00000000000496dc
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad26b6
R10: fffffbfff1ad26b6 R11: 1ffffffff1ad26b5 R12: dffffc0000000000
R13: ffff88801bc6d2c0 R14: ffff888058595e50 R15: ffff888058595e5a
FS:  00007f937eab06c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ac6899d58 CR3: 000000005f7f3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400