From: Josh Steadmon <steadmon@google.com>
To: git@vger.kernel.org
Cc: Josh Steadmon <steadmon@google.com>
Subject: [RFC PATCH 1/2] fuzz: Add basic fuzz testing target.
Date: Thu, 4 Oct 2018 16:01:28 -0700 [thread overview]
Message-ID: <bfe4f2f965528ca2a45864857051b9835970ff07.1538693039.git.steadmon@google.com> (raw)
In-Reply-To: <cover.1538693039.git.steadmon@google.com>
Signed-off-by: Josh Steadmon <steadmon@google.com>
---
.gitignore | 2 ++
Makefile | 30 +++++++++++++++++++++++++++++-
| 14 ++++++++++++++
3 files changed, 45 insertions(+), 1 deletion(-)
create mode 100644 fuzz-pack-headers.c
diff --git a/.gitignore b/.gitignore
index 9d1363a1eb..87a28b3115 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+/fuzz_corpora
+/fuzz-pack-headers
/GIT-BUILD-OPTIONS
/GIT-CFLAGS
/GIT-LDFLAGS
diff --git a/Makefile b/Makefile
index 13e1c52478..10bb82b115 100644
--- a/Makefile
+++ b/Makefile
@@ -590,6 +590,8 @@ XDIFF_OBJS =
VCSSVN_OBJS =
GENERATED_H =
EXTRA_CPPFLAGS =
+FUZZ_OBJS =
+FUZZ_PROGRAMS =
LIB_OBJS =
PROGRAM_OBJS =
PROGRAMS =
@@ -682,6 +684,10 @@ SCRIPTS = $(SCRIPT_SH_INS) \
ETAGS_TARGET = TAGS
+FUZZ_OBJS += fuzz-pack-headers.o
+
+FUZZ_PROGRAMS += $(patsubst %.o,%,$(FUZZ_OBJS))
+
# Empty...
EXTRA_PROGRAMS =
@@ -2250,6 +2256,7 @@ TEST_OBJS := $(patsubst %$X,%.o,$(TEST_PROGRAMS)) $(patsubst %,t/helper/%,$(TEST
OBJECTS := $(LIB_OBJS) $(BUILTIN_OBJS) $(PROGRAM_OBJS) $(TEST_OBJS) \
$(XDIFF_OBJS) \
$(VCSSVN_OBJS) \
+ $(FUZZ_OBJS) \
common-main.o \
git.o
ifndef NO_CURL
@@ -2931,7 +2938,7 @@ profile-clean:
cocciclean:
$(RM) contrib/coccinelle/*.cocci.patch*
-clean: profile-clean coverage-clean cocciclean
+clean: profile-clean coverage-clean cocciclean fuzz-clean
$(RM) *.res
$(RM) $(OBJECTS)
$(RM) $(LIB_FILE) $(XDIFF_LIB) $(VCSSVN_LIB)
@@ -3061,3 +3068,24 @@ cover_db: coverage-report
cover_db_html: cover_db
cover -report html -outputdir cover_db_html cover_db
+
+### Fuzz testing
+#
+.PHONY: fuzz-clean fuzz-objs fuzz-compile
+
+FUZZ_CFLAGS = $(CFLAGS) -fsanitize-coverage=trace-pc-guard -fsanitize=address
+FUZZ_LDFLAGS = $(FUZZ_CFLAGS)
+
+
+fuzz-clean:
+ $(RM) $(FUZZ_PROGRAMS) $(FUZZ_OBJS)
+
+fuzz-objs: $(FUZZ_OBJS)
+
+fuzz-compile:
+ $(MAKE) CC=clang LD=clang CFLAGS="$(FUZZ_CFLAGS)" \
+ LDFLAGS="$(FUZZ_LDFLAGS)" all fuzz-objs
+
+$(FUZZ_PROGRAMS): fuzz-compile
+ clang++ $(FUZZ_LDFLAGS) $(LIB_OBJS) $(BUILTIN_OBJS) $(XDIFF_OBJS) \
+ $(EXTLIBS) git.o $@.o /usr/lib/llvm-4.0/lib/libFuzzer.a -o $@
--git a/fuzz-pack-headers.c b/fuzz-pack-headers.c
new file mode 100644
index 0000000000..99da1d0fd3
--- /dev/null
+++ b/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;
+}
--
2.19.0.605.g01d371f741-goog
next prev parent reply other threads:[~2018-10-04 23:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-04 23:01 [RFC PATCH 0/2] add fuzzing targets for use with LLVM libFuzzer Josh Steadmon
2018-10-04 23:01 ` Josh Steadmon [this message]
2018-10-10 2:14 ` [RFC PATCH 1/2] fuzz: Add basic fuzz testing target Junio C Hamano
2018-10-13 0:59 ` Josh Steadmon
2018-10-04 23:01 ` [RFC PATCH 2/2] fuzz: Add fuzz testing for packfile indices Josh Steadmon
2018-10-10 2:19 ` Junio C Hamano
2018-10-13 0:58 ` [PATCH v2 0/2] add fuzzing targets for use with OSS-Fuzz steadmon
2018-10-13 0:58 ` [PATCH v2 1/2] fuzz: Add basic fuzz testing target steadmon
2018-10-13 0:58 ` [PATCH v2 2/2] fuzz: Add fuzz testing for packfile indices steadmon
2018-10-16 6:18 ` [PATCH v2 0/2] add fuzzing targets for use with OSS-Fuzz Junio C Hamano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bfe4f2f965528ca2a45864857051b9835970ff07.1538693039.git.steadmon@google.com \
--to=steadmon@google.com \
--cc=git@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.