gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: original: gfs2_fill_super+0x17f7/0x1f80 fs/gfs2/ops_fstype.c:1266
gfs2: fsid=syz:syz.0: pid: 4736
gfs2: fsid=syz:syz.0: lock type: 1 req lock state : 3
gfs2: fsid=syz:syz.0: new: gfs2_reconfigure+0x715/0xcd0 fs/gfs2/ops_fstype.c:1587
gfs2: fsid=syz:syz.0: pid: 4736
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:4736 [syz.2.87] gfs2_fill_super+0x17f7/0x1f80 fs/gfs2/ops_fstype.c:1266
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1555!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4736 Comm: syz.2.87 Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:add_to_queue fs/gfs2/glock.c:1555 [inline]
RIP: 0010:gfs2_glock_nq+0x1207/0x14e0 fs/gfs2/glock.c:1580
Code: ff d1 45 fe 41 0f b7 0e 48 c7 c7 a0 33 b2 8a 4c 89 fe 89 da e8 9a c0 77 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 c9 7d ff ff <0f> 0b 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 59 ef ff ff 4c 89 ff
RSP: 0018:ffffc900032f7af0 EFLAGS: 00010246
RAX: b595f3140a84db00 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9000da69000 RSI: 0000000000013909 RDI: 000000000001390a
RBP: ffff8880577389e0 R08: dffffc0000000000 R09: fffffbfff1bfd046
R10: fffffbfff1bfd046 R11: 1ffffffff1bfd045 R12: ffff88805466d1b8
R13: 0000000000000000 R14: ffffc900032f7ca2 R15: ffff88805466d270
FS:  00007f7b429816c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe72a2afd58 CR3: 000000007af99000 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:255 [inline]
 gfs2_freeze_lock_shared+0x5f/0xc0 fs/gfs2/util.c:108
 gfs2_reconfigure+0x715/0xcd0 fs/gfs2/ops_fstype.c:1587
 reconfigure_super+0x219/0x880 fs/super.c:977
 do_remount fs/namespace.c:2713 [inline]
 path_mount+0xdfd/0x1010 fs/namespace.c:3379
 do_mount fs/namespace.c:3400 [inline]
 __do_sys_mount fs/namespace.c:3608 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3585
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7b41b8e969
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:00007f7b42981038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7b41db5fa0 RCX: 00007f7b41b8e969
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f7b41c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002236824 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7b41db5fa0 R15: 00007fff1d75f278
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1555 [inline]
RIP: 0010:gfs2_glock_nq+0x1207/0x14e0 fs/gfs2/glock.c:1580
Code: ff d1 45 fe 41 0f b7 0e 48 c7 c7 a0 33 b2 8a 4c 89 fe 89 da e8 9a c0 77 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 c9 7d ff ff <0f> 0b 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 59 ef ff ff 4c 89 ff
RSP: 0018:ffffc900032f7af0 EFLAGS: 00010246
RAX: b595f3140a84db00 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9000da69000 RSI: 0000000000013909 RDI: 000000000001390a
RBP: ffff8880577389e0 R08: dffffc0000000000 R09: fffffbfff1bfd046
R10: fffffbfff1bfd046 R11: 1ffffffff1bfd045 R12: ffff88805466d1b8
R13: 0000000000000000 R14: ffffc900032f7ca2 R15: ffff88805466d270
FS:  00007f7b429816c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe72a2afd58 CR3: 000000007af99000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400