------------[ 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 6e fc 74 8d ba 6a 04 00 00 48 c7 c1 80 ee aa 8b e8 28 51 1b 00 90 0f 0b e8 00 fe 1f fe 90 <0f> 0b e8 f8 fd 1f fe 90 0f 0b e8 f0 fd 1f fe 90 0f 0b e8 e8 fd 1f
RSP: 0000:ffffc9000f49f0c0 EFLAGS: 00010293
RAX: ffffffff83a02570 RBX: ffff8880358e0014 RCX: ffff8880003b4900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000f49f3f0 R08: ffff888043304e63 R09: 1ffff110086609cc
R10: dffffc0000000000 R11: ffffed10086609cd R12: ffff888032e9c000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880358e0014
FS:  0000555555caf500(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000a20 CR3: 0000000042ee4000 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:3488
 do_shared_fault mm/memory.c:5774 [inline]
 do_fault mm/memory.c:5836 [inline]
 do_pte_missing mm/memory.c:4361 [inline]
 handle_pte_fault mm/memory.c:6177 [inline]
 __handle_mm_fault+0x1916/0x5400 mm/memory.c:6318
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487
 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: 0033:0x7f247f865509
Code: ff ff ff 01 64 48 8b 04 25 00 00 00 00 48 8d b8 c8 fe ff ff e8 f8 5f 0c 00 85 c0 75 10 48 8b 44 24 68 48 8b b4 24 98 00 00 00 <48> 89 30 64 f0 83 2c 25 90 ff ff ff 01 48 8b 84 24 80 00 00 00 48
RSP: 002b:00007ffee37c58c0 EFLAGS: 00010246
RAX: 0000200000000a20 RBX: 0000000000000002 RCX: ffffe00000000000
RDX: 2a56e8083e430ae0 RSI: 0000000000000000 RDI: 0000555555caf3c8
RBP: 00007ffee37c5988 R08: 00007f247f7ff030 R09: 000000000000000f
R10: 0000000000000001 R11: 0000000000000006 R12: 00007f247fbe618c
R13: 00007f247fbe6180 R14: fffffffffffffffe R15: 0000000000000003
 </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 6e fc 74 8d ba 6a 04 00 00 48 c7 c1 80 ee aa 8b e8 28 51 1b 00 90 0f 0b e8 00 fe 1f fe 90 <0f> 0b e8 f8 fd 1f fe 90 0f 0b e8 f0 fd 1f fe 90 0f 0b e8 e8 fd 1f
RSP: 0000:ffffc9000f49f0c0 EFLAGS: 00010293
RAX: ffffffff83a02570 RBX: ffff8880358e0014 RCX: ffff8880003b4900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000f49f3f0 R08: ffff888043304e63 R09: 1ffff110086609cc
R10: dffffc0000000000 R11: ffffed10086609cd R12: ffff888032e9c000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880358e0014
FS:  0000555555caf500(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000a20 CR3: 0000000042ee4000 CR4: 0000000000352ef0