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smp: openssl: disallow trying to clean up mutexes twice

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This commit is contained in:
Mykola Stryebkov 2021-04-08 13:02:27 +01:00 • committed by Andy Green
parent 402e97a679
commit eeed0c07d0
1 changed files with 8 additions and 5 deletions
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13
lib/tls/openssl/openssl-tls.c
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@ -1,7 +1,7 @@
/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
* Copyright (C) 2010 - 2021 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
@ -93,7 +93,7 @@ lws_tls_err_describe_clear(void)
#if LWS_MAX_SMP != 1
static pthread_mutex_t *openssl_mutexes;
static pthread_mutex_t *openssl_mutexes = NULL;
static void
lws_openssl_lock_callback(int mode, int type, const char *file, int line)
@ -203,9 +203,12 @@ lws_context_deinit_ssl_library(struct lws_context *context)
CRYPTO_set_locking_callback(NULL);
for (n = 0; n < CRYPTO_num_locks(); n++)
pthread_mutex_destroy(&openssl_mutexes[n]);
if (openssl_mutexes) {
for (n = 0; n < CRYPTO_num_locks(); n++)
pthread_mutex_destroy(&openssl_mutexes[n]);
OPENSSL_free(openssl_mutexes);
OPENSSL_free(openssl_mutexes);
openssl_mutexes = NULL;
}
#endif
}