syzbot

         option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1181!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4370 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1181 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cda/0x1d00 fs/ocfs2/aops.c:1242
Code: 4c 8b 03 48 8d bc 24 10 02 00 00 48 c7 c6 e1 d7 a3 8b ba 80 04 00 00 48 c7 c1 80 7c 47 8a e8 cd 78 19 00 0f 0b e8 46 a4 63 fe <0f> 0b e8 3f a4 63 fe 0f 0b e8 38 a4 63 fe 0f 0b e8 31 a4 63 fe 0f
RSP: 0018:ffffc90002476e60 EFLAGS: 00010293
RAX: ffffffff8314264a RBX: ffff88807b194014 RCX: ffff88807b715940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002477190 R08: dffffc0000000000 R09: ffffed100d1690e5
R10: ffffed100d1690e5 R11: 1ffff1100d1690e4 R12: ffff88807cc08000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807b194014
FS:  00005555615be500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7b0fd1000 CR3: 000000007a8ea000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x3057/0x4180 fs/ocfs2/aops.c:1818
 ocfs2_write_begin+0x1ab/0x300 fs/ocfs2/aops.c:1905
 generic_perform_write+0x2aa/0x530 mm/filemap.c:3785
 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912
 ocfs2_file_write_iter+0x1578/0x1cf0 fs/ocfs2/file.c:2472
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_pwrite64 fs/read_write.c:701 [inline]
 __do_sys_pwrite64 fs/read_write.c:711 [inline]
 __se_sys_pwrite64 fs/read_write.c:708 [inline]
 __x64_sys_pwrite64+0x194/0x220 fs/read_write.c:708
 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: 0033:0x7fdc1283ffc9
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:00007fffc30c0e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fdc12a96fa0 RCX: 00007fdc1283ffc9
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007fdc128c2f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7c R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdc12a96fa0 R14: 00007fdc12a96fa0 R15: 0000000000000004
 </TASK>
Modules linked in:
---[ end trace 26bdf81db229c4c8 ]---
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1181 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cda/0x1d00 fs/ocfs2/aops.c:1242
Code: 4c 8b 03 48 8d bc 24 10 02 00 00 48 c7 c6 e1 d7 a3 8b ba 80 04 00 00 48 c7 c1 80 7c 47 8a e8 cd 78 19 00 0f 0b e8 46 a4 63 fe <0f> 0b e8 3f a4 63 fe 0f 0b e8 38 a4 63 fe 0f 0b e8 31 a4 63 fe 0f
RSP: 0018:ffffc90002476e60 EFLAGS: 00010293
RAX: ffffffff8314264a RBX: ffff88807b194014 RCX: ffff88807b715940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002477190 R08: dffffc0000000000 R09: ffffed100d1690e5
R10: ffffed100d1690e5 R11: 1ffff1100d1690e4 R12: ffff88807cc08000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807b194014
FS:  00005555615be500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7b0fe3000 CR3: 000000007a8ea000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400