qemu/scripts/oss-fuzz
Alexander Bulekov dfc86c0f25 fuzz: add an instrumentation filter
By default, -fsanitize=fuzzer instruments all code with coverage
information. However, this means that libfuzzer will track coverage over
hundreds of source files that are unrelated to virtual-devices. This
means that libfuzzer will optimize inputs for coverage observed in timer
code, memory APIs etc. This slows down the fuzzer and stores many inputs
that are not relevant to the actual virtual-devices.

With this change, clang versions that support the
"-fsanitize-coverage-allowlist" will only instrument a subset of the
compiled code, that is directly related to virtual-devices.

Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
2021-09-01 07:33:13 -04:00
..
build.sh fuzz: avoid building twice, when running on gitlab 2021-08-11 13:40:01 +02:00
instrumentation-filter-template fuzz: add an instrumentation filter 2021-09-01 07:33:13 -04:00
minimize_qtest_trace.py fuzz: fix wrong index in clear_bits 2021-02-08 14:43:54 +01:00
output_reproducer.py fuzz: add a script to build reproducers 2021-03-16 14:19:54 -04:00
reorder_fuzzer_qtest_trace.py scripts/oss-fuzz: Fix typo in documentation 2021-06-05 21:29:39 +02:00