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better asan defaults everwhere

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vanhauser-thc
2023-01-26 12:21:47 +01:00
parent e332d37d4e
commit f4a13585a1
8 changed files with 67 additions and 273 deletions
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57
src/afl-common.c
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@ -58,6 +58,63 @@ u8 last_intr = 0;
#define AFL_PATH "/usr/local/lib/afl/"
#endif
void set_sanitizer_defaults() {
/* Set sane defaults for ASAN if nothing else is specified. */
u8 *have_asan_options = getenv("ASAN_OPTIONS");
u8 *have_ubsan_options = getenv("UBSAN_OPTIONS");
u8 *have_msan_options = getenv("MSAN_OPTIONS");
u8 *have_lsan_options = getenv("LSAN_OPTIONS");
u8 have_san_options = 0;
if (have_asan_options || have_ubsan_options || have_msan_options ||
have_lsan_options)
have_san_options = 1;
u8 default_options[1024] =
"detect_odr_violation=0:abort_on_error=1:symbolize=0:malloc_context_"
"size=0:allocator_may_return_null=1:handle_segv=0:handle_sigbus=0:"
"handle_abort=0:handle_sigfpe=0:handle_sigill=0:";
if (!have_lsan_options) strcat(default_options, "detect_leaks=0:");
/* Set sane defaults for ASAN if nothing else is specified. */
if (!have_san_options) setenv("ASAN_OPTIONS", default_options, 1);
/* Set sane defaults for UBSAN if nothing else is specified. */
if (!have_san_options) setenv("UBSAN_OPTIONS", default_options, 1);
/* MSAN is tricky, because it doesn't support abort_on_error=1 at this
point. So, we do this in a very hacky way. */
if (!have_msan_options) {
u8 buf[2048] = "";
if (!have_san_options) strcpy(buf, default_options);
strcat(buf, "exit_code=" STRINGIFY(MSAN_ERROR) ":msan_track_origins=0:");
setenv("MSAN_OPTIONS", buf, 1);
}
/* LSAN, too, does not support abort_on_error=1. (is this still true??) */
if (!have_lsan_options) {
u8 buf[2048] = "";
if (!have_san_options) strcpy(buf, default_options);
strcat(buf,
"exitcode=" STRINGIFY(
LSAN_ERROR) ":fast_unwind_on_malloc=0:print_suppressions=0:");
setenv("LSAN_OPTIONS", buf, 1);
}
/* Envs for QASan */
setenv("QASAN_MAX_CALL_STACK", "0", 0);
setenv("QASAN_SYMBOLIZE", "0", 0);
}
u32 check_binary_signatures(u8 *fn) {
int ret = 0, fd = open(fn, O_RDONLY);