gfs2: fsid=syz:syz.0: G:  s:EX n:3/2090 f:lyfaqo t:EX d:EX/0 a:0 v:0 r:3 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:EX f:nW e:0 p:6071 [syz.0.20] gfs2_iomap_begin_write fs/gfs2/bmap.c:1040 [inline]
gfs2: fsid=syz:syz.0:  H: s:EX f:nW e:0 p:6071 [syz.0.20] gfs2_iomap_begin+0x7a3/0x11c0 fs/gfs2/bmap.c:1133
gfs2: fsid=syz:syz.0:  R: n:8336 f:80000000 b:826/826 i:7 q:810 r:0 e:7001
gfs2: fsid=syz:syz.0:   B: n:9394 s:15569 f:810
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:674!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 95 Comm: kworker/1:1H Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: gfs2-glock/syz:syz glock_work_func
RIP: 0010:do_xmote+0x706/0x750 fs/gfs2/glock.c:674
Code: 38 c1 0f 8c a9 fe ff ff 48 89 df e8 64 77 29 fe e9 9c fe ff ff e8 ea cd c3 fd 31 ff 48 89 de ba 01 00 00 00 e8 1b e9 fe ff 90 <0f> 0b e8 d3 cd c3 fd 31 ff 48 89 de ba 01 00 00 00 e8 04 e9 fe ff
RSP: 0018:ffffc9000212f9a0 EFLAGS: 00010246
RAX: 992e81f959216400 RBX: ffff88805a6b2bc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffffff8bb183c0 R08: ffff88807b7b687b R09: 1ffff1100f6f6d0f
R10: dffffc0000000000 R11: ffffed100f6f6d10 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000015
FS:  0000000000000000(0000) GS:ffff888125e08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000609000 CR3: 000000007897a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 glock_work_func+0x2a8/0x580 fs/gfs2/glock.c:1002
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_xmote+0x706/0x750 fs/gfs2/glock.c:674
Code: 38 c1 0f 8c a9 fe ff ff 48 89 df e8 64 77 29 fe e9 9c fe ff ff e8 ea cd c3 fd 31 ff 48 89 de ba 01 00 00 00 e8 1b e9 fe ff 90 <0f> 0b e8 d3 cd c3 fd 31 ff 48 89 de ba 01 00 00 00 e8 04 e9 fe ff
RSP: 0018:ffffc9000212f9a0 EFLAGS: 00010246
RAX: 992e81f959216400 RBX: ffff88805a6b2bc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffffff8bb183c0 R08: ffff88807b7b687b R09: 1ffff1100f6f6d0f
R10: dffffc0000000000 R11: ffffed100f6f6d10 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000015
FS:  0000000000000000(0000) GS:ffff888125e08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000609000 CR3: 000000007897a000 CR4: 00000000003526f0