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When compiling for fuzzing, ensure the pseudo random number seed is non-zero.

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Stephen Morris
2018-11-28 18:27:06 +00:00
parent 73bc3147d1
commit 77032a4e29
1 changed files with 6 additions and 0 deletions
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6
lib/isc/random.c
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@@ -80,7 +80,13 @@ static isc_once_t isc_random_once = ISC_ONCE_INIT;
static void
isc_random_initialize(void) {
#if FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
/*
* Set a constant seed to help in problem reproduction should fuzzing
* find a crash or a hang. The seed array must be non-zero else
* xoshiro128starstar will generate an infinite series of zeroes.
*/
memset(seed, 0, sizeof(seed));
seed[0] = 1;
#else
int useed[4] = {0,0,0,0};
isc_entropy_get(useed, sizeof(useed));