Use LLVM's libFuzzer to fuzz the virgl_renderer_submit_cmd API. Signed-off-by: David Riley <davidriley@chromium.org> Signed-off-by: Dave Airlie <airlied@redhat.com>macos/master
David Riley
6 years ago
committed by
Dave Airlie
parent
5057fb9b05
commit
87b346a1a3
@ -0,0 +1,24 @@ |
||||
AM_CFLAGS = \
|
||||
-I$(top_srcdir)/src/gallium/drivers/virgl \
|
||||
-I$(top_srcdir)/src/gallium/include \
|
||||
-I$(top_srcdir)/src/gallium/auxiliary \
|
||||
-I$(top_srcdir)/src/gallium/drivers \
|
||||
-I$(top_srcdir)/include \
|
||||
-I$(top_srcdir)/src \
|
||||
$(DEFINES) \
|
||||
$(PIC_FLAGS) \
|
||||
$(LIBDRM_CFLAGS) \
|
||||
$(EPOXY_CFLAGS) \
|
||||
$(VISIBILITY_CFLAGS) \
|
||||
$(CODE_COVERAGE_CFLAGS) \
|
||||
-fsanitize=address \
|
||||
-fsanitize=fuzzer
|
||||
|
||||
if FUZZER |
||||
noinst_PROGRAMS = virgl_fuzzer
|
||||
|
||||
virgl_fuzzer_SOURCES = \
|
||||
virgl_fuzzer.c
|
||||
|
||||
virgl_fuzzer_LDADD = $(top_builddir)/src/libvirglrenderer.la $(EPOXY_LIBS)
|
||||
endif |
||||
@ -0,0 +1,193 @@ |
||||
// Copyright 2018 The Chromium OS Authors. All rights reserved.
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// libfuzzer-based fuzzer for public APIs.
|
||||
|
||||
#include <assert.h> |
||||
#include <stdint.h> |
||||
#include <stdlib.h> |
||||
#include <string.h> |
||||
#include <unistd.h> |
||||
|
||||
#include <epoxy/egl.h> |
||||
|
||||
#include "virglrenderer.h" |
||||
|
||||
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size); |
||||
|
||||
#ifndef CLEANUP_EACH_INPUT |
||||
// eglInitialize leaks unless eglTeriminate is called (which only happens
|
||||
// with CLEANUP_EACH_INPUT), so suppress leak detection on everything
|
||||
// allocated by it.
|
||||
|
||||
#if !defined(__has_feature) |
||||
#define __has_feature(x) 0 |
||||
#endif |
||||
|
||||
#if __has_feature(address_sanitizer) |
||||
const char* __lsan_default_suppressions(void); |
||||
|
||||
const char* __lsan_default_suppressions() { |
||||
return "leak:eglInitialize\n"; |
||||
} |
||||
#endif // __has_feature(address_sanitizer)
|
||||
|
||||
#endif // !CLEANUP_EACH_INPUT
|
||||
|
||||
struct fuzzer_cookie |
||||
{ |
||||
EGLDisplay display; |
||||
EGLConfig egl_config; |
||||
EGLContext ctx; |
||||
}; |
||||
|
||||
static void fuzzer_write_fence(void *opaque, uint32_t fence) |
||||
{ |
||||
} |
||||
|
||||
static virgl_renderer_gl_context fuzzer_create_gl_context( |
||||
void *cookie, int scanout_idx, struct virgl_renderer_gl_ctx_param *param) |
||||
{ |
||||
struct fuzzer_cookie *cookie_data = cookie; |
||||
EGLContext shared = param->shared ? eglGetCurrentContext() : NULL; |
||||
const EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 3, |
||||
EGL_NONE }; |
||||
EGLContext ctx = eglCreateContext(cookie_data->display, |
||||
cookie_data->egl_config, |
||||
shared, |
||||
context_attribs); |
||||
assert(ctx); |
||||
|
||||
return ctx; |
||||
} |
||||
|
||||
static void fuzzer_destroy_gl_context(void *cookie, |
||||
virgl_renderer_gl_context ctx) |
||||
{ |
||||
struct fuzzer_cookie *cookie_data = cookie; |
||||
eglDestroyContext(cookie_data->display, ctx); |
||||
} |
||||
|
||||
static int fuzzer_make_current(void *cookie, int scanout_idx, virgl_renderer_gl_context ctx) |
||||
{ |
||||
return 0; |
||||
} |
||||
|
||||
const int FUZZER_CTX_ID = 1; |
||||
const char *SWRAST_ENV = "LIBGL_ALWAYS_SOFTWARE"; |
||||
|
||||
static struct fuzzer_cookie cookie; |
||||
|
||||
static struct virgl_renderer_callbacks fuzzer_cbs = { |
||||
.version = 1, |
||||
.write_fence = fuzzer_write_fence, |
||||
.create_gl_context = fuzzer_create_gl_context, |
||||
.destroy_gl_context = fuzzer_destroy_gl_context, |
||||
.make_current = fuzzer_make_current, |
||||
}; |
||||
|
||||
static bool initialized = false; |
||||
|
||||
static int initialize_environment() |
||||
{ |
||||
if (!initialized) { |
||||
// Force SW rendering unless env variable is already set.
|
||||
setenv(SWRAST_ENV, "true", 0); |
||||
|
||||
cookie.display = eglGetDisplay(EGL_DEFAULT_DISPLAY); |
||||
assert(cookie.display != EGL_NO_DISPLAY); |
||||
|
||||
assert(eglInitialize(cookie.display, NULL, NULL)); |
||||
|
||||
const EGLint config_attribs[] = { EGL_SURFACE_TYPE, EGL_DONT_CARE, |
||||
EGL_NONE }; |
||||
EGLint num_configs; |
||||
assert(eglChooseConfig(cookie.display, config_attribs, |
||||
&cookie.egl_config, 1, &num_configs)); |
||||
|
||||
assert(eglBindAPI(EGL_OPENGL_ES_API)); |
||||
|
||||
const EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 3, |
||||
EGL_NONE }; |
||||
cookie.ctx = eglCreateContext(cookie.display, cookie.egl_config, |
||||
EGL_NO_CONTEXT, context_attribs); |
||||
assert(cookie.ctx != EGL_NO_CONTEXT); |
||||
|
||||
assert(eglMakeCurrent(cookie.display, EGL_NO_SURFACE, EGL_NO_SURFACE, |
||||
cookie.ctx)); |
||||
|
||||
initialized = true; |
||||
} |
||||
|
||||
return FUZZER_CTX_ID; |
||||
} |
||||
|
||||
#ifdef CLEANUP_EACH_INPUT |
||||
static void cleanup_environment() |
||||
{ |
||||
if (cookie.ctx != EGL_NO_CONTEXT) { |
||||
eglMakeCurrent(cookie.display, NULL, NULL, NULL); |
||||
eglDestroyContext(cookie.display, cookie.ctx); |
||||
} |
||||
|
||||
if (cookie.display != EGL_NO_DISPLAY) { |
||||
eglTerminate(cookie.display); |
||||
} |
||||
|
||||
initialized = false; |
||||
} |
||||
#endif |
||||
|
||||
int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) |
||||
{ |
||||
uint32_t ctx_id = initialize_environment(); |
||||
|
||||
// There are trade-offs here between ensuring that state is not persisted
|
||||
// between invocations of virgl_renderer_submit_cmd, and to avoid leaking
|
||||
// resources that comes with repeated dlopen()/dlclose()ing the mesa
|
||||
// driver with each eglInitialize()/eglTerminate() if CLEANUP_EACH_INPUT
|
||||
// is set.
|
||||
|
||||
assert(!virgl_renderer_init(&cookie, 0, &fuzzer_cbs)); |
||||
|
||||
const char *name = "fuzzctx"; |
||||
assert(!virgl_renderer_context_create(ctx_id, strlen(name), name)); |
||||
|
||||
virgl_renderer_submit_cmd((void *) data, ctx_id, size / sizeof(uint32_t)); |
||||
|
||||
virgl_renderer_context_destroy(ctx_id); |
||||
|
||||
virgl_renderer_cleanup(&cookie); |
||||
|
||||
#ifdef CLEANUP_EACH_INPUT |
||||
// The following cleans up between each input which is a lot slower.
|
||||
cleanup_environment(); |
||||
#endif |
||||
|
||||
return 0; |
||||
} |
||||
Loading…
Reference in new issue