gfs2: fsid=syz:syz.0:  H: s:EX f:nW e:0 p:3655 [syz.3.17] gfs2_iomap_begin_write fs/gfs2/bmap.c:1040 [inline]
gfs2: fsid=syz:syz.0:  H: s:EX f:nW e:0 p:3655 [syz.3.17] gfs2_iomap_begin+0x4f8/0xf70 fs/gfs2/bmap.c:1133
gfs2: fsid=syz:syz.0:  H: s:EX f:nW e:0 p:3662 [syz.3.17] alloc_dinode+0x143/0x490 fs/gfs2/inode.c:414
gfs2: fsid=syz:syz.0:  R: n:8336 f:80000000 b:448/448 i:7 q:432 r:0 e:7001
gfs2: fsid=syz:syz.0:   B: n:9394 s:15947 f:432
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:674!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 53 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT(none) 
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+0x5d7/0x600 fs/gfs2/glock.c:674
Code: e1 07 80 c1 03 38 c1 0f 8c b2 fe ff ff 48 89 df e8 ee 9c 7c ff e9 a5 fe ff ff 31 ff 48 89 de ba 01 00 00 00 e8 ea 16 ff ff 90 <0f> 0b 31 ff 48 89 de ba 01 00 00 00 e8 d8 16 ff ff 90 0f 0b 31 ff
RSP: 0018:ffffc900003879a8 EFLAGS: 00010246
RAX: 9f4316dc666d4800 RBX: ffff888166831f40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffffff859f4680 R08: ffff88816ddb421b R09: 1ffff1102dbb6843
R10: dffffc0000000000 R11: ffffed102dbb6844 R12: dffffc0000000000
R13: 1ffff1102cd063ea R14: ffff888166831f50 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88826d305000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91817ddf98 CR3: 000000015b96e000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 glock_work_func+0x216/0x4b0 fs/gfs2/glock.c:1002
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0x9f8/0x13f0 kernel/workqueue.c:3346
 worker_thread+0x772/0xba0 kernel/workqueue.c:3427
 kthread+0x600/0x770 kernel/kthread.c:463
 ret_from_fork+0x2e2/0x590 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+0x5d7/0x600 fs/gfs2/glock.c:674
Code: e1 07 80 c1 03 38 c1 0f 8c b2 fe ff ff 48 89 df e8 ee 9c 7c ff e9 a5 fe ff ff 31 ff 48 89 de ba 01 00 00 00 e8 ea 16 ff ff 90 <0f> 0b 31 ff 48 89 de ba 01 00 00 00 e8 d8 16 ff ff 90 0f 0b 31 ff
RSP: 0018:ffffc900003879a8 EFLAGS: 00010246
RAX: 9f4316dc666d4800 RBX: ffff888166831f40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffffff859f4680 R08: ffff88816ddb421b R09: 1ffff1102dbb6843
R10: dffffc0000000000 R11: ffffed102dbb6844 R12: dffffc0000000000
R13: 1ffff1102cd063ea R14: ffff888166831f50 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88826d305000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91817ddf98 CR3: 000000015b96e000 CR4: 00000000003506f0