4 files changed, 57 insertions, 0 deletions
diff --git a/oss-fuzz/.gitignore b/oss-fuzz/.gitignore
new file mode 100644
index 0000000000..9acb74412e
--- /dev/null
+++ b/oss-fuzz/.gitignore
@@ -0,0 +1,3 @@
+fuzz-commit-graph
+fuzz-pack-headers
+fuzz-pack-idx
diff --git a/oss-fuzz/fuzz-commit-graph.c b/oss-fuzz/fuzz-commit-graph.c
new file mode 100644
index 0000000000..914026f5d8
--- /dev/null
+++ b/oss-fuzz/fuzz-commit-graph.c
@@ -0,0 +1,27 @@
+#include "commit-graph.h"
+#include "repository.h"
+
+struct commit_graph *parse_commit_graph(struct repo_settings *s,
+					void *graph_map, size_t graph_size);
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	struct commit_graph *g;
+
+	initialize_the_repository();
+	/*
+	 * Initialize the_repository with commit-graph settings that would
+	 * normally be read from the repository's gitdir. We want to avoid
+	 * touching the disk to keep the individual fuzz-test cases as fast as
+	 * possible.
+	 */
+	the_repository->settings.commit_graph_generation_version = 2;
+	the_repository->settings.commit_graph_read_changed_paths = 1;
+	g = parse_commit_graph(&the_repository->settings, (void *)data, size);
+	repo_clear(the_repository);
+	free_commit_graph(g);
+
+	return 0;
+}
diff --git a/oss-fuzz/fuzz-pack-headers.c b/oss-fuzz/fuzz-pack-headers.c
new file mode 100644
index 0000000000..99da1d0fd3
--- /dev/null
+++ b/oss-fuzz/fuzz-pack-headers.c
@@ -0,0 +1,14 @@
+#include "packfile.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	enum object_type type;
+	unsigned long len;
+
+	unpack_object_header_buffer((const unsigned char *)data,
+				    (unsigned long)size, &type, &len);
+
+	return 0;
+}
diff --git a/oss-fuzz/fuzz-pack-idx.c b/oss-fuzz/fuzz-pack-idx.c
new file mode 100644
index 0000000000..0c3d777aac
--- /dev/null
+++ b/oss-fuzz/fuzz-pack-idx.c
@@ -0,0 +1,13 @@
+#include "object-store.h"
+#include "packfile.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	struct packed_git p;
+
+	load_idx("fuzz-input", GIT_SHA1_RAWSZ, (void *)data, size, &p);
+
+	return 0;
+}