------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5320 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 35 ad 82 8d ba 6a 04 00 00 48 c7 c1 c0 f4 aa 8b e8 18 51 1b 00 90 0f 0b e8 b0 34 20 fe 90 <0f> 0b e8 a8 34 20 fe 90 0f 0b e8 a0 34 20 fe 90 0f 0b e8 98 34 20
RSP: 0018:ffffc9000d486cc0 EFLAGS: 00010293
RAX: ffffffff839f6ef0 RBX: ffff88801164e014 RCX: ffff888000314900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d486ff0 R08: ffff8880435cc023 R09: 1ffff110086b9804
R10: dffffc0000000000 R11: ffffed10086b9805 R12: ffff888011efc000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801164e014
FS:  00007f9602ec66c0(0000) GS:ffff88808d306000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcf48bb5000 CR3: 000000003ee6b000 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: 0033:0x7f9601f8eec9
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:00007f9602ec6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f96021e6090 RCX: 00007f9601f8eec9
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000005
RBP: 00007f9602011f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000
R13: 00007f96021e6128 R14: 00007f96021e6090 R15: 00007ffea3cde828
 </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 35 ad 82 8d ba 6a 04 00 00 48 c7 c1 c0 f4 aa 8b e8 18 51 1b 00 90 0f 0b e8 b0 34 20 fe 90 <0f> 0b e8 a8 34 20 fe 90 0f 0b e8 a0 34 20 fe 90 0f 0b e8 98 34 20
RSP: 0018:ffffc9000d486cc0 EFLAGS: 00010293
RAX: ffffffff839f6ef0 RBX: ffff88801164e014 RCX: ffff888000314900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d486ff0 R08: ffff8880435cc023 R09: 1ffff110086b9804
R10: dffffc0000000000 R11: ffffed10086b9805 R12: ffff888011efc000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801164e014
FS:  00007f9602ec66c0(0000) GS:ffff88808d306000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f5dd882660 CR3: 000000003ee6b000 CR4: 0000000000352ef0