------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5339 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 04/01/2014
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1db4/0x1de0 fs/ocfs2/aops.c:1219
Code: 00 48 c7 c6 6f da b2 8d ba 6a 04 00 00 48 c7 c1 40 61 d1 8b e8 dd 39 1c 00 48 8b 04 24 c6 40 1e f8 90 0f 0b e8 8d 7c 17 fe 90 <0f> 0b e8 85 7c 17 fe 90 0f 0b e8 7d 7c 17 fe 90 0f 0b e8 75 7c 17
RSP: 0018:ffffc9000e976520 EFLAGS: 00010283
RAX: ffffffff83ab2bb3 RBX: ffff8880317f6014 RCX: 0000000000100000
RDX: ffffc90021533000 RSI: 00000000000d980f RDI: 00000000000d9810
RBP: ffffc9000e976850 R08: ffff888012bb4023 R09: 1ffff11002576804
R10: dffffc0000000000 R11: ffffed1002576805 R12: ffff888033044000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880317f6014
FS:  00007fbb61af06c0(0000) GS:ffff88808cf1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb559ff000 CR3: 0000000012263000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x3305/0x4140 fs/ocfs2/aops.c:1796
 ocfs2_dio_wr_get_block+0xbbf/0x1800 fs/ocfs2/aops.c:2214
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x15d7/0x32f0 fs/direct-io.c:1243
 ocfs2_direct_IO+0x251/0x2c0 fs/ocfs2/aops.c:2441
 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4248
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4417
 ocfs2_file_write_iter+0x1663/0x1e20 fs/ocfs2/file.c:2475
 iter_file_splice_write+0x99b/0x1100 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1230
 do_sendfile+0x535/0x7c0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb60b9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbb61af0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fbb60e16090 RCX: 00007fbb60b9acb9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000007
RBP: 00007fbb60c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbb60e16128 R14: 00007fbb60e16090 R15: 00007fffc2cf80b8
 </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+0x1db4/0x1de0 fs/ocfs2/aops.c:1219
Code: 00 48 c7 c6 6f da b2 8d ba 6a 04 00 00 48 c7 c1 40 61 d1 8b e8 dd 39 1c 00 48 8b 04 24 c6 40 1e f8 90 0f 0b e8 8d 7c 17 fe 90 <0f> 0b e8 85 7c 17 fe 90 0f 0b e8 7d 7c 17 fe 90 0f 0b e8 75 7c 17
RSP: 0018:ffffc9000e976520 EFLAGS: 00010283
RAX: ffffffff83ab2bb3 RBX: ffff8880317f6014 RCX: 0000000000100000
RDX: ffffc90021533000 RSI: 00000000000d980f RDI: 00000000000d9810
RBP: ffffc9000e976850 R08: ffff888012bb4023 R09: 1ffff11002576804
R10: dffffc0000000000 R11: ffffed1002576805 R12: ffff888033044000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880317f6014
FS:  00007fbb61af06c0(0000) GS:ffff88808cf1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb559ff000 CR3: 0000000012263000 CR4: 0000000000352ef0