Commit 4584ecce authored by Bodo Möller's avatar Bodo Möller
Browse files

another thread-safety fix

parent ed3ecd80

crypto/bn/bn_mont.c

+8 −6
Original line number Diff line number Diff line
@@ -481,6 +481,7 @@ BN_MONT_CTX *BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, int lock, 
					const BIGNUM *mod, BN_CTX *ctx)

	{

	int got_write_lock = 0;

	BN_MONT_CTX *ret;



	CRYPTO_r_lock(lock);

	if (!*pmont)
@@ -491,19 +492,20 @@ BN_MONT_CTX *BN_MONT_CTX_set_locked(BN_MONT_CTX **pmont, int lock, 


		if (!*pmont)

			{

			BN_MONT_CTX *mtmp;

			mtmp = BN_MONT_CTX_new();

			if (mtmp && !BN_MONT_CTX_set(mtmp, mod, ctx))

				BN_MONT_CTX_free(mtmp);

			ret = BN_MONT_CTX_new();

			if (ret && !BN_MONT_CTX_set(ret, mod, ctx))

				BN_MONT_CTX_free(ret);

			else

				*pmont = mtmp;

				*pmont = ret;

			}

		}

	

	ret = *pmont;

	

	if (got_write_lock)

		CRYPTO_w_unlock(lock);

	else

		CRYPTO_r_unlock(lock);

		

	return *pmont;

	return ret;

	}