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-rw-r--r--src/common/crypto.c4
-rw-r--r--src/common/memarea.c8
2 files changed, 8 insertions, 4 deletions
diff --git a/src/common/crypto.c b/src/common/crypto.c
index d2a42698cb..933f1033f7 100644
--- a/src/common/crypto.c
+++ b/src/common/crypto.c
@@ -585,8 +585,10 @@ MOCK_IMPL(int,
{
tor_assert(env);
- if (env->key)
+ if (env->key) {
RSA_free(env->key);
+ env->key = NULL;
+ }
{
BIGNUM *e = BN_new();
diff --git a/src/common/memarea.c b/src/common/memarea.c
index 0a3fd009b0..173ed4e1cb 100644
--- a/src/common/memarea.c
+++ b/src/common/memarea.c
@@ -83,8 +83,7 @@ typedef struct memarea_chunk_t {
struct memarea_chunk_t *next_chunk;
size_t mem_size; /**< How much RAM is available in mem, total? */
char *next_mem; /**< Next position in mem to allocate data at. If it's
- * greater than or equal to mem+mem_size, this chunk is
- * full. */
+ * equal to mem+mem_size, this chunk is full. */
#ifdef USE_ALIGNED_ATTRIBUTE
/** Actual content of the memory chunk. */
char mem[FLEXIBLE_ARRAY_MEMBER] __attribute__((aligned(MEMAREA_ALIGN)));
@@ -205,7 +204,10 @@ memarea_alloc(memarea_t *area, size_t sz)
tor_assert(sz < SIZE_T_CEILING);
if (sz == 0)
sz = 1;
- if (chunk->next_mem+sz > chunk->U_MEM+chunk->mem_size) {
+ tor_assert(chunk->next_mem <= chunk->U_MEM + chunk->mem_size);
+ const size_t space_remaining =
+ (chunk->U_MEM + chunk->mem_size) - chunk->next_mem;
+ if (sz > space_remaining) {
if (sz+CHUNK_HEADER_SIZE >= CHUNK_SIZE) {
/* This allocation is too big. Stick it in a special chunk, and put
* that chunk second in the list. */