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[PATCH v2 2/3] docs/fuzz: add some information about OSS-Fuzz

From: Alexander Bulekov
Subject: [PATCH v2 2/3] docs/fuzz: add some information about OSS-Fuzz
Date: Sun, 17 Jan 2021 18:09:23 -0500

Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
 docs/devel/fuzzing.rst | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/docs/devel/fuzzing.rst b/docs/devel/fuzzing.rst
index 6096242d99..8792358854 100644
--- a/docs/devel/fuzzing.rst
+++ b/docs/devel/fuzzing.rst
@@ -181,6 +181,32 @@ To ensure that these env variables have been configured 
correctly, we can use::
 The output should contain a complete list of matched MemoryRegions.
+QEMU is continuously fuzzed on `OSS-Fuzz` 
+By default, the OSS-Fuzz build will try to fuzz every fuzz-target. Since the
+generic-fuzz target requires additional information provided in environment
+variables, we pre-define some generic-fuzz configs in
+``tests/qtest/fuzz/generic_fuzz_configs.h``. Each config must specify:
+ * ``.name``: To identify the fuzzer config
+ * ``.args`` OR ``.argfunc``: A string or pointer to a function returning a
+   string.  These strings are used to specify the ``QEMU_FUZZ_ARGS``
+   environment variable.  ``argfunc`` is useful when the config relies on e.g.
+   a dynamically created temp directory, or a free tcp/udp port.
+ * ``.objects``: A string that specifies the ``QEMU_FUZZ_OBJECTS`` environment
+   variable.
+To fuzz additional devices/device configuration on OSS-Fuzz:
+ * Send patches for a new device-specific fuzzer
+ * Send patches for a new generic-fuzz config
+Build details:
+ * `The basic Dockerfile that sets up the environment for building QEMU's
+   fuzzers on OSS-Fuzz
+   <https://github.com/google/oss-fuzz/blob/master/projects/qemu/Dockerfile>`_
+ * The script responsible for building the fuzzers:
+   ``scripts/oss-fuzz/build.sh``
 Implementation Details / Fuzzer Lifecycle

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