From: Alexander Bulekov <alxndr@bu.edu>
To: Yan Zhiqiang <yanz3q@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: About libfuzzer in qemu
Date: Sun, 7 Mar 2021 22:52:00 -0500 [thread overview]
Message-ID: <20210308035200.averk4yfddkqttyf@mozz.bu.edu> (raw)
In-Reply-To: <20210308034253.m6rjohwqcuynsaip@mozz.bu.edu>
On 210307 2242, Alexander Bulekov wrote:
> My basic workflow for that is:
> QEMU_FUZZ_TIMEOUT=0 QTEST_LOG=1 FUZZ_SERIALIZE_QTEST=1 \
> ./qemu-fuzz-target \
> --fuzz-target=generic-fuzz-virtio-vga ./crash-... > /tmp/out
^
Oops that should be 2> or &>
> ./scripts/oss-fuzz/reorder_fuzzer_qtest_trace.py /tmp/out > /tmp/repro
>
> # In /tmp/out find the line "Starting qemu with Arguments:" and copy the
> # args ( without -qtest /dev/null)
> less /tmp/out
>
> export QEMU_ARGS="-display none -machine accel=qtest, -m 512M -machine q35 -nodefaults -device virtio-vga"
>
> # Reproduce the crash on a non-fuzz binary
> ./qemu-system-i386 $QEMU_ARGS -qtest stdio < /tmp/repro
prev parent reply other threads:[~2021-03-08 3:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAB7jVHGXcAdYg+z=Dgwb5LBhTxjWG_BALdwh+0CvUUucTzFehg@mail.gmail.com>
2021-03-04 15:23 ` About libfuzzer in qemu Alexander Bulekov
2021-03-05 7:51 ` Qiuhao Li
2021-03-05 14:48 ` Alexander Bulekov
[not found] ` <CAB7jVHECxxStzzV+5=7w_4QPwMxLRG5HE1Un97fCoxi72_MUBA@mail.gmail.com>
[not found] ` <20210306051010.rfg3ox2yo3hwmn2c@mozz.bu.edu>
[not found] ` <CAB7jVHHFc9FsnZmgGGwBLTON_8u2f8o5M6XJ1s9bZxShT+_ksQ@mail.gmail.com>
2021-03-08 3:42 ` Alexander Bulekov
2021-03-08 3:52 ` Alexander Bulekov [this message]
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