gfs2: fsid=syz:syz.0: new: gfs2_reconfigure+0x70d/0xd80 fs/gfs2/ops_fstype.c:1587
gfs2: fsid=syz:syz.0: pid: 4428
gfs2: fsid=syz:syz.0: lock type: 1 req lock state : 3
gfs2: fsid=syz:syz.0: G:  s:SH n:1/2 f:qb t:SH d:EX/0 a:0 v:0 r:4 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:SH f:eEH e:0 p:4428 [syz.2.27] gfs2_fill_super+0x18a3/0x2020 fs/gfs2/ops_fstype.c:1266
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1560!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4428 Comm: syz.2.27 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:ffffc9000470fb50 EFLAGS: 00010246
RAX: 7edf7c0f80fbe600 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff520008e1f5c
RBP: ffff88801ffb11c8 R08: ffffffff8e20b46f R09: fffff520008e1f18
R10: dffffc0000000000 R11: fffffbfff1c4168e R12: ffff88801ffb1270
R13: ffff88801ffb11d0 R14: ffffc9000470fcc2 R15: ffff88801ffb11b8
FS:  00007ff571de36c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7566540700 CR3: 0000000028528000 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]
 gfs2_freeze_lock_shared+0x5f/0xc0 fs/gfs2/util.c:108
 gfs2_reconfigure+0x70d/0xd80 fs/gfs2/ops_fstype.c:1587
 reconfigure_super+0x224/0x8d0 fs/super.c:977
 do_remount fs/namespace.c:2741 [inline]
 path_mount+0xcce/0xfb0 fs/namespace.c:3400
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff570f9f3ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ff571de2e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff571de2ee0 RCX: 00007ff570f9f3ca
RDX: 0000200000000f40 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000000f40 R08: 00007ff571de2ee0 R09: 0000000001a18429
R10: 0000000001a18429 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007ff571de2ea0 R14: 0000000000000000 R15: 0000200000008c00
 </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:ffffc9000470fb50 EFLAGS: 00010246
RAX: 7edf7c0f80fbe600 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000044 RSI: 0000000000000000 RDI: fffff520008e1f5c
RBP: ffff88801ffb11c8 R08: ffffffff8e20b46f R09: fffff520008e1f18
R10: dffffc0000000000 R11: fffffbfff1c4168e R12: ffff88801ffb1270
R13: ffff88801ffb11d0 R14: ffffc9000470fcc2 R15: ffff88801ffb11b8
FS:  00007ff571de36c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7566540700 CR3: 0000000028528000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400