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ssl/*: switch to switch to Thread-Sanitizer-friendly primitives.

Browse source 
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6786)
This commit is contained in:
Andy Polyakov 2018-07-29 14:12:53 +02:00
parent cab76c0f64
commit 9ef9088c15
6 changed files with 49 additions and 80 deletions
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41
ssl/ssl_lib.c
View file

@ -2264,7 +2264,6 @@ LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
{
long l;
int i;
/* For some cases with ctx == NULL perform syntax checks */
if (ctx == NULL) {
switch (cmd) {
@ -2319,40 +2318,27 @@ long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
case SSL_CTRL_SESS_NUMBER:
return lh_SSL_SESSION_num_items(ctx->sessions);
case SSL_CTRL_SESS_CONNECT:
return CRYPTO_atomic_read(&ctx->stats.sess_connect, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_connect);
case SSL_CTRL_SESS_CONNECT_GOOD:
return CRYPTO_atomic_read(&ctx->stats.sess_connect_good, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_connect_good);
case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
return CRYPTO_atomic_read(&ctx->stats.sess_connect_renegotiate, &i,
ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_connect_renegotiate);
case SSL_CTRL_SESS_ACCEPT:
return CRYPTO_atomic_read(&ctx->stats.sess_accept, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_accept);
case SSL_CTRL_SESS_ACCEPT_GOOD:
return CRYPTO_atomic_read(&ctx->stats.sess_accept_good, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_accept_good);
case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
return CRYPTO_atomic_read(&ctx->stats.sess_accept_renegotiate, &i,
ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_accept_renegotiate);
case SSL_CTRL_SESS_HIT:
return CRYPTO_atomic_read(&ctx->stats.sess_hit, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_hit);
case SSL_CTRL_SESS_CB_HIT:
return CRYPTO_atomic_read(&ctx->stats.sess_cb_hit, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_cb_hit);
case SSL_CTRL_SESS_MISSES:
return CRYPTO_atomic_read(&ctx->stats.sess_miss, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_miss);
case SSL_CTRL_SESS_TIMEOUTS:
return CRYPTO_atomic_read(&ctx->stats.sess_timeout, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_timeout);
case SSL_CTRL_SESS_CACHE_FULL:
return CRYPTO_atomic_read(&ctx->stats.sess_cache_full, &i, ctx->lock)
? i : 0;
return tsan_load(&ctx->stats.sess_cache_full);
case SSL_CTRL_MODE:
return (ctx->mode |= larg);
case SSL_CTRL_CLEAR_MODE:
@ -3426,13 +3412,12 @@ void ssl_update_cache(SSL *s, int mode)
/* auto flush every 255 connections */
if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
int *stat, val;
TSAN_QUALIFIER int *stat;
if (mode & SSL_SESS_CACHE_CLIENT)
stat = &s->session_ctx->stats.sess_connect_good;
else
stat = &s->session_ctx->stats.sess_accept_good;
if (CRYPTO_atomic_read(stat, &val, s->session_ctx->lock)
&& (val & 0xff) == 0xff)
if ((tsan_load(stat) & 0xff) == 0xff)
SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
}
}

33
ssl/ssl_locl.h
View file

@ -33,6 +33,7 @@
# include "packet_locl.h"
# include "internal/dane.h"
# include "internal/refcount.h"
# include "internal/tsan_assist.h"
# ifdef OPENSSL_BUILD_SHLIBSSL
# undef OPENSSL_EXTERN
@ -779,21 +780,23 @@ struct ssl_ctx_st {
const unsigned char *data, int len,
int *copy);
struct {
int sess_connect; /* SSL new conn - started */
int sess_connect_renegotiate; /* SSL reneg - requested */
int sess_connect_good; /* SSL new conne/reneg - finished */
int sess_accept; /* SSL new accept - started */
int sess_accept_renegotiate; /* SSL reneg - requested */
int sess_accept_good; /* SSL accept/reneg - finished */
int sess_miss; /* session lookup misses */
int sess_timeout; /* reuse attempt on timeouted session */
int sess_cache_full; /* session removed due to full cache */
int sess_hit; /* session reuse actually done */
int sess_cb_hit; /* session-id that was not in the cache was
* passed back via the callback. This
* indicates that the application is supplying
* session-id's from other processes - spooky
* :-) */
TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
TSAN_QUALIFIER int sess_miss; /* session lookup misses */
TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
* the cache was passed back via
* the callback. This indicates
* that the application is
* supplying session-id's from
* other processes - spooky
* :-) */
} stats;
CRYPTO_REF_COUNT references;

20
ssl/ssl_sess.c
View file

@ -448,7 +448,6 @@ SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
size_t sess_id_len)
{
SSL_SESSION *ret = NULL;
int discard;
if ((s->session_ctx->session_cache_mode
& SSL_SESS_CACHE_NO_INTERNAL_LOOKUP) == 0) {
@ -469,8 +468,7 @@ SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
}
CRYPTO_THREAD_unlock(s->session_ctx->lock);
if (ret == NULL)
CRYPTO_atomic_add(&s->session_ctx->stats.sess_miss, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_miss);
}
if (ret == NULL && s->session_ctx->get_session_cb != NULL) {
@ -479,8 +477,7 @@ SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id,
ret = s->session_ctx->get_session_cb(s, sess_id, sess_id_len, &copy);
if (ret != NULL) {
CRYPTO_atomic_add(&s->session_ctx->stats.sess_cb_hit, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_cb_hit);
/*
* Increment reference count now if the session callback asks us
@ -533,7 +530,7 @@ int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello)
/* This is used only by servers. */
SSL_SESSION *ret = NULL;
int fatal = 0, discard;
int fatal = 0;
int try_session_cache = 0;
SSL_TICKET_STATUS r;
@ -612,8 +609,7 @@ int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello)
}
if (ret->timeout < (long)(time(NULL) - ret->time)) { /* timeout */
CRYPTO_atomic_add(&s->session_ctx->stats.sess_timeout, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_timeout);
if (try_session_cache) {
/* session was from the cache, so remove it */
SSL_CTX_remove_session(s->session_ctx, ret);
@ -641,8 +637,7 @@ int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello)
s->session = ret;
}
CRYPTO_atomic_add(&s->session_ctx->stats.sess_hit, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_hit);
s->verify_result = s->session->verify_result;
return 1;
@ -669,7 +664,7 @@ int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello)
int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
{
int ret = 0, discard;
int ret = 0;
SSL_SESSION *s;
/*
@ -736,8 +731,7 @@ int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
if (!remove_session_lock(ctx, ctx->session_cache_tail, 0))
break;
else
CRYPTO_atomic_add(&ctx->stats.sess_cache_full, 1, &discard,
ctx->lock);
tsan_counter(&ctx->stats.sess_cache_full);
}
}
}

8
ssl/statem/extensions.c
View file

@ -912,7 +912,7 @@ static int init_server_name(SSL *s, unsigned int context)
static int final_server_name(SSL *s, unsigned int context, int sent)
{
int ret = SSL_TLSEXT_ERR_NOACK, discard;
int ret = SSL_TLSEXT_ERR_NOACK;
int altmp = SSL_AD_UNRECOGNIZED_NAME;
int was_ticket = (SSL_get_options(s) & SSL_OP_NO_TICKET) == 0;
@ -960,10 +960,8 @@ static int final_server_name(SSL *s, unsigned int context, int sent)
* exceed sess_accept (zero) for the new context.
*/
if (SSL_IS_FIRST_HANDSHAKE(s) && s->ctx != s->session_ctx) {
CRYPTO_atomic_add(&s->ctx->stats.sess_accept, 1, &discard,
s->ctx->lock);
CRYPTO_atomic_add(&s->session_ctx->stats.sess_accept, -1, &discard,
s->session_ctx->lock);
tsan_counter(&s->ctx->stats.sess_accept);
tsan_counter(&s->session_ctx->stats.sess_accept);
}
/*

4
ssl/statem/statem_clnt.c
View file

@ -1409,7 +1409,6 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt)
unsigned int compression;
unsigned int sversion;
unsigned int context;
int discard;
RAW_EXTENSION *extensions = NULL;
#ifndef OPENSSL_NO_COMP
SSL_COMP *comp;
@ -1616,8 +1615,7 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt)
|| (SSL_IS_TLS13(s)
&& s->session->ext.tick_identity
!= TLSEXT_PSK_BAD_IDENTITY)) {
CRYPTO_atomic_add(&s->session_ctx->stats.sess_miss, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_miss);
if (!ssl_get_new_session(s, 0)) {
/* SSLfatal() already called */
goto err;

23
ssl/statem/statem_lib.c
View file

@ -132,23 +132,18 @@ int tls_setup_handshake(SSL *s)
}
if (SSL_IS_FIRST_HANDSHAKE(s)) {
/* N.B. s->session_ctx == s->ctx here */
CRYPTO_atomic_add(&s->session_ctx->stats.sess_accept, 1, &i,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_accept);
} else {
/* N.B. s->ctx may not equal s->session_ctx */
CRYPTO_atomic_add(&s->ctx->stats.sess_accept_renegotiate, 1, &i,
s->ctx->lock);
tsan_counter(&s->ctx->stats.sess_accept_renegotiate);
s->s3->tmp.cert_request = 0;
}
} else {
int discard;
if (SSL_IS_FIRST_HANDSHAKE(s))
CRYPTO_atomic_add(&s->session_ctx->stats.sess_connect, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_connect);
else
CRYPTO_atomic_add(&s->session_ctx->stats.sess_connect_renegotiate,
1, &discard, s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_connect_renegotiate);
/* mark client_random uninitialized */
memset(s->s3->client_random, 0, sizeof(s->s3->client_random));
@ -1009,7 +1004,6 @@ unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, CERT_PKEY *cpk)
*/
WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs, int stop)
{
int discard;
void (*cb) (const SSL *ssl, int type, int val) = NULL;
if (clearbufs) {
@ -1055,8 +1049,7 @@ WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs, int stop)
ssl_update_cache(s, SSL_SESS_CACHE_SERVER);
/* N.B. s->ctx may not equal s->session_ctx */
CRYPTO_atomic_add(&s->ctx->stats.sess_accept_good, 1, &discard,
s->ctx->lock);
tsan_counter(&s->ctx->stats.sess_accept_good);
s->handshake_func = ossl_statem_accept;
if (SSL_IS_DTLS(s) && !s->hit) {
@ -1084,12 +1077,10 @@ WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs, int stop)
ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
}
if (s->hit)
CRYPTO_atomic_add(&s->session_ctx->stats.sess_hit, 1, &discard,
s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_hit);
s->handshake_func = ossl_statem_connect;
CRYPTO_atomic_add(&s->session_ctx->stats.sess_connect_good, 1,
&discard, s->session_ctx->lock);
tsan_counter(&s->session_ctx->stats.sess_connect_good);
if (SSL_IS_DTLS(s) && s->hit) {
/*