------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5321 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 77 09 75 8d ba 6a 04 00 00 48 c7 c1 00 f0 aa 8b e8 28 51 1b 00 90 0f 0b e8 70 cf 1f fe 90 <0f> 0b e8 68 cf 1f fe 90 0f 0b e8 60 cf 1f fe 90 0f 0b e8 58 cf 1f
RSP: 0018:ffffc9000d2ef0c0 EFLAGS: 00010293
RAX: ffffffff83a043e0 RBX: ffff888051850014 RCX: ffff888000ee8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d2ef3f0 R08: ffff8880126c4023 R09: 1ffff110024d8804
R10: dffffc0000000000 R11: ffffed10024d8805 R12: ffff88803347c000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888051850014
FS:  000055555f61c500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000240 CR3: 0000000019e6c000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1796
 __ocfs2_page_mkwrite fs/ocfs2/mmap.c:93 [inline]
 ocfs2_page_mkwrite+0x600/0xc40 fs/ocfs2/mmap.c:144
 do_page_mkwrite+0x14d/0x310 mm/memory.c:3489
 do_shared_fault mm/memory.c:5792 [inline]
 do_fault mm/memory.c:5854 [inline]
 do_pte_missing mm/memory.c:4362 [inline]
 handle_pte_fault mm/memory.c:6195 [inline]
 __handle_mm_fault+0x1916/0x5400 mm/memory.c:6336
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6505
 do_user_addr_fault+0x764/0x1380 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f2eafb58b08
Code: 66 89 74 17 02 88 0f c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 fa 7f 4c 17 f0 c3 0f 1f 44 00 00 48 8b 4c 16 f8 48 8b 36 <48> 89 37 48 89 4c 17 f8 c3 62 e1 fe 28 6f 54 16 ff 62 e1 fe 28 6f
RSP: 002b:00007fffeb744328 EFLAGS: 00010202
RAX: 0000200000000240 RBX: 0000000000000004 RCX: 0030626c6c756e2f
RDX: 000000000000000c RSI: 6c756e2f7665642f RDI: 0000200000000240
RBP: 00007f2eafde7da0 R08: 00007f2eaf9ff02c R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f2eafde609c
R13: 00007f2eafde6090 R14: fffffffffffffffe R15: 00007fffeb744440
 </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 77 09 75 8d ba 6a 04 00 00 48 c7 c1 00 f0 aa 8b e8 28 51 1b 00 90 0f 0b e8 70 cf 1f fe 90 <0f> 0b e8 68 cf 1f fe 90 0f 0b e8 60 cf 1f fe 90 0f 0b e8 58 cf 1f
RSP: 0018:ffffc9000d2ef0c0 EFLAGS: 00010293
RAX: ffffffff83a043e0 RBX: ffff888051850014 RCX: ffff888000ee8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d2ef3f0 R08: ffff8880126c4023 R09: 1ffff110024d8804
R10: dffffc0000000000 R11: ffffed10024d8805 R12: ffff88803347c000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888051850014
FS:  000055555f61c500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000240 CR3: 0000000019e6c000 CR4: 0000000000352ef0