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kernel BUG at fs/f2fs/data.c:365!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 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
Workqueue: loop0 loop_workfn
RIP: 0010:f2fs_write_end_bio fs/f2fs/data.c:365 [inline]
RIP: 0010:f2fs_write_end_io+0x1681/0x16f0 fs/f2fs/data.c:391
Code: e4 5e 8c e8 31 ce c5 fc 90 0f 0b e8 e9 e4 64 fd 48 8b 7c 24 08 48 c7 c6 80 e4 5e 8c e8 18 ce c5 fc 90 0f 0b e8 d0 e4 64 fd 90 <0f> 0b e8 c8 e4 64 fd 48 8b 7c 24 08 48 c7 c6 80 e4 5e 8c e8 f7 cd
RSP: 0018:ffffc9000025f490 EFLAGS: 00010293
RAX: ffffffff84624ff0 RBX: 000000000000000b RCX: ffff88801b704b00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000b
RBP: ffffea00004c8980 R08: ffffffff9078fa37 R09: 1ffffffff20f1f46
R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: ffffea00004c8940
R13: dffffc0000000000 R14: 0000000000001000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc6fc0a9fe8 CR3: 0000000042764000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 blk_update_request+0x57b/0xe50 block/blk-mq.c:1016
 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1147
 lo_rw_aio_complete drivers/block/loop.c:338 [inline]
 lo_rw_aio+0xcd4/0xf20 drivers/block/loop.c:406
 do_req_filebacked drivers/block/loop.c:430 [inline]
 loop_handle_cmd drivers/block/loop.c:1947 [inline]
 loop_process_work+0x621/0x11c0 drivers/block/loop.c:1982
 process_one_work kernel/workqueue.c:3387 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_write_end_bio fs/f2fs/data.c:365 [inline]
RIP: 0010:f2fs_write_end_io+0x1681/0x16f0 fs/f2fs/data.c:391
Code: e4 5e 8c e8 31 ce c5 fc 90 0f 0b e8 e9 e4 64 fd 48 8b 7c 24 08 48 c7 c6 80 e4 5e 8c e8 18 ce c5 fc 90 0f 0b e8 d0 e4 64 fd 90 <0f> 0b e8 c8 e4 64 fd 48 8b 7c 24 08 48 c7 c6 80 e4 5e 8c e8 f7 cd
RSP: 0018:ffffc9000025f490 EFLAGS: 00010293
RAX: ffffffff84624ff0 RBX: 000000000000000b RCX: ffff88801b704b00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000b
RBP: ffffea00004c8980 R08: ffffffff9078fa37 R09: 1ffffffff20f1f46
R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: ffffea00004c8940
R13: dffffc0000000000 R14: 0000000000001000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc6fc0a9fe8 CR3: 000000001208f000 CR4: 0000000000352ef0