loop7: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,7) on (node local, slot 0) with writeback data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 14429 Comm: syz.7.1528 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 70 9f 9f 8d ba 6a 04 00 00 48 c7 c1 00 51 ca 8b e8 c8 52 1b 00 90 0f 0b e8 50 79 26 fe 90 <0f> 0b e8 48 79 26 fe 90 0f 0b e8 40 79 26 fe 90 0f 0b e8 38 79 26
RSP: 0018:ffffc900033aecc0 EFLAGS: 00010287
RAX: ffffffff83993440 RBX: ffff888111afe014 RCX: 0000000000080000
RDX: ffffc900084aa000 RSI: 00000000000009b1 RDI: 00000000000009b2
RBP: ffffc900033aeff0 R08: ffff8881256515a3 R09: 1ffff11024aca2b4
R10: dffffc0000000000 R11: ffffed1024aca2b5 R12: ffff888030984000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888111afe014
FS:  00007efc5be266c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb05ff8 CR3: 000000010764e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x31a3/0x4340
 ocfs2_write_begin+0x1bb/0x310
 generic_perform_write+0x2c5/0x900
 ocfs2_file_write_iter+0x157a/0x1d10
 do_iter_readv_writev+0x61c/0x8b0
 vfs_writev+0x31a/0x960
 __se_sys_pwritev2+0x179/0x290
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc5af8ec29
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:00007efc5be26038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007efc5b1d5fa0 RCX: 00007efc5af8ec29
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000007
RBP: 00007efc5b011e41 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000054aa R11: 0000000000000246 R12: 0000000000000000
R13: 00007efc5b1d6038 R14: 00007efc5b1d5fa0 R15: 00007fffcec6a438
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 70 9f 9f 8d ba 6a 04 00 00 48 c7 c1 00 51 ca 8b e8 c8 52 1b 00 90 0f 0b e8 50 79 26 fe 90 <0f> 0b e8 48 79 26 fe 90 0f 0b e8 40 79 26 fe 90 0f 0b e8 38 79 26
RSP: 0018:ffffc900033aecc0 EFLAGS: 00010287
RAX: ffffffff83993440 RBX: ffff888111afe014 RCX: 0000000000080000
RDX: ffffc900084aa000 RSI: 00000000000009b1 RDI: 00000000000009b2
RBP: ffffc900033aeff0 R08: ffff8881256515a3 R09: 1ffff11024aca2b4
R10: dffffc0000000000 R11: ffffed1024aca2b5 R12: ffff888030984000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888111afe014
FS:  00007efc5be266c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7c7600440 CR3: 000000010764e000 CR4: 00000000000006f0
