[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH] fuzz: avoid double-fetches by default
From: |
Alexander Bulekov |
Subject: |
[PATCH] fuzz: avoid double-fetches by default |
Date: |
Wed, 2 Dec 2020 11:42:14 -0500 |
The generic fuzzer can find double-fetch bugs. However:
* We currently have no good way of producing qemu-system reproducers for
double-fetch bugs. Even if we can get developers to run the binary-blob
reproducers with the qemu-fuzz builds, we currently don't have a minimizer for
these reproducers, so they are usually not easy to follow.
* Often times the fuzzer will provide a reproducer containing a
double-fetch for a bug that can be reproduced without double-fetching.
Until we find a way to build nice double-fetch reproducers that
developers are willing to look at, lets tell OSS-Fuzz to avoid
double-fetches.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
---
tests/qtest/fuzz/generic_fuzz.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tests/qtest/fuzz/generic_fuzz.c b/tests/qtest/fuzz/generic_fuzz.c
index 262a963d2e..07ad690683 100644
--- a/tests/qtest/fuzz/generic_fuzz.c
+++ b/tests/qtest/fuzz/generic_fuzz.c
@@ -916,6 +916,7 @@ static GString
*generic_fuzz_predefined_config_cmdline(FuzzTarget *t)
g_assert(t->opaque);
config = t->opaque;
+ setenv("QEMU_AVOID_DOUBLE_FETCH", "1", 1);
setenv("QEMU_FUZZ_ARGS", config->args, 1);
setenv("QEMU_FUZZ_OBJECTS", config->objects, 1);
return generic_fuzz_cmdline(t);
--
2.28.0
- [PATCH] fuzz: avoid double-fetches by default,
Alexander Bulekov <=