diff options
| author | Rich Salz <rsalz@openssl.org> | 2017-06-07 11:23:37 -0400 |
|---|---|---|
| committer | Rich Salz <rsalz@openssl.org> | 2017-06-07 11:23:37 -0400 |
| commit | be606c013d31847718ceb5d97c567988a771c2e5 (patch) | |
| tree | 62f2994124f8830b3f71f2ccf60d9e56a713fb33 /crypto/lhash/lh_stats.c | |
| parent | db0f35dda18403accabe98e7780f3dfc516f49de (diff) | |
Add a lock around the OBJ_NAME table
Various initialization functions modify this table, which can cause heap
corruption in the absence of external synchronization.
Some stats are modified from OPENSSL_LH_retrieve, where callers aren't
expecting to have to take out an exclusive lock. Switch to using atomic
operations for those stats.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3525)
Diffstat (limited to 'crypto/lhash/lh_stats.c')
| -rw-r--r-- | crypto/lhash/lh_stats.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/crypto/lhash/lh_stats.c b/crypto/lhash/lh_stats.c index 7337832422..5586afa0d8 100644 --- a/crypto/lhash/lh_stats.c +++ b/crypto/lhash/lh_stats.c @@ -61,6 +61,9 @@ void OPENSSL_LH_node_usage_stats(const OPENSSL_LHASH *lh, FILE *fp) void OPENSSL_LH_stats_bio(const OPENSSL_LHASH *lh, BIO *out) { + OPENSSL_LHASH *lh_mut = (OPENSSL_LHASH *) lh; + int ret; + BIO_printf(out, "num_items = %lu\n", lh->num_items); BIO_printf(out, "num_nodes = %u\n", lh->num_nodes); BIO_printf(out, "num_alloc_nodes = %u\n", lh->num_alloc_nodes); @@ -69,15 +72,24 @@ void OPENSSL_LH_stats_bio(const OPENSSL_LHASH *lh, BIO *out) BIO_printf(out, "num_contracts = %lu\n", lh->num_contracts); BIO_printf(out, "num_contract_reallocs = %lu\n", lh->num_contract_reallocs); - BIO_printf(out, "num_hash_calls = %lu\n", lh->num_hash_calls); - BIO_printf(out, "num_comp_calls = %lu\n", lh->num_comp_calls); + CRYPTO_atomic_add(&lh_mut->num_hash_calls, 0, &ret, + lh->retrieve_stats_lock); + BIO_printf(out, "num_hash_calls = %d\n", ret); + CRYPTO_atomic_add(&lh_mut->num_comp_calls, 0, &ret, + lh->retrieve_stats_lock); + BIO_printf(out, "num_comp_calls = %d\n", ret); BIO_printf(out, "num_insert = %lu\n", lh->num_insert); BIO_printf(out, "num_replace = %lu\n", lh->num_replace); BIO_printf(out, "num_delete = %lu\n", lh->num_delete); BIO_printf(out, "num_no_delete = %lu\n", lh->num_no_delete); - BIO_printf(out, "num_retrieve = %lu\n", lh->num_retrieve); - BIO_printf(out, "num_retrieve_miss = %lu\n", lh->num_retrieve_miss); - BIO_printf(out, "num_hash_comps = %lu\n", lh->num_hash_comps); + CRYPTO_atomic_add(&lh_mut->num_retrieve, 0, &ret, lh->retrieve_stats_lock); + BIO_printf(out, "num_retrieve = %d\n", ret); + CRYPTO_atomic_add(&lh_mut->num_retrieve_miss, 0, &ret, + lh->retrieve_stats_lock); + BIO_printf(out, "num_retrieve_miss = %d\n", ret); + CRYPTO_atomic_add(&lh_mut->num_hash_comps, 0, &ret, + lh->retrieve_stats_lock); + BIO_printf(out, "num_hash_comps = %d\n", ret); } void OPENSSL_LH_node_stats_bio(const OPENSSL_LHASH *lh, BIO *out) |