On Wednesday, 2020-12-02 at 11:42:14 -05, Alexander Bulekov wrote: > 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 <[email protected]>
Reviewed-by: Darren Kenny <[email protected]> > --- > 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
