------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5349 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 5a b3 82 8d ba 6a 04 00 00 48 c7 c1 c0 f6 aa 8b e8 18 51 1b 00 90 0f 0b e8 b0 23 20 fe 90 <0f> 0b e8 a8 23 20 fe 90 0f 0b e8 a0 23 20 fe 90 0f 0b e8 98 23 20
RSP: 0018:ffffc9000d636cc0 EFLAGS: 00010287
RAX: ffffffff839f7ff0 RBX: ffff88804313e014 RCX: 0000000000100000
RDX: ffffc9000f6ac000 RSI: 0000000000000a43 RDI: 0000000000000a44
RBP: ffffc9000d636ff0 R08: ffff88800dc94e63 R09: 1ffff11001b929cc
R10: dffffc0000000000 R11: ffffed1001b929cd R12: ffff8880335c8000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88804313e014
FS:  00007fbca995e6c0(0000) GS:ffff88808d304000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd63bc7c40 CR3: 0000000011042000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1796
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1884
 generic_perform_write+0x2c5/0x900 mm/filemap.c:4242
 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469
 do_iter_readv_writev+0x623/0x8c0 fs/read_write.c:-1
 vfs_writev+0x31a/0x960 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x179/0x290 fs/read_write.c:1202
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbca8b8eec9
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:00007fbca995e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fbca8de6180 RCX: 00007fbca8b8eec9
RDX: 0000000000000002 RSI: 0000200000000500 RDI: 000000000000000c
RBP: 00007fbca8c11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbca8de6218 R14: 00007fbca8de6180 R15: 00007ffd63bc8408
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 5a b3 82 8d ba 6a 04 00 00 48 c7 c1 c0 f6 aa 8b e8 18 51 1b 00 90 0f 0b e8 b0 23 20 fe 90 <0f> 0b e8 a8 23 20 fe 90 0f 0b e8 a0 23 20 fe 90 0f 0b e8 98 23 20
RSP: 0018:ffffc9000d636cc0 EFLAGS: 00010287
RAX: ffffffff839f7ff0 RBX: ffff88804313e014 RCX: 0000000000100000
RDX: ffffc9000f6ac000 RSI: 0000000000000a43 RDI: 0000000000000a44
RBP: ffffc9000d636ff0 R08: ffff88800dc94e63 R09: 1ffff11001b929cc
R10: dffffc0000000000 R11: ffffed1001b929cd R12: ffff8880335c8000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88804313e014
FS:  00007fbca995e6c0(0000) GS:ffff88808d304000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000005c0 CR3: 0000000011042000 CR4: 0000000000352ef0