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Fix ordering of free()ing of internal structures in ssl_server2

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If `MBEDTLS_MEMORY_BUFFER_ALLOC_C` is configured and Mbed TLS'
custom buffer allocator is used for calloc() and free(), the
read buffer used by the server example application is allocated
from the buffer allocator, but freed after the buffer allocator
has been destroyed. If memory backtracing is enabled, this leaves
a memory leak in the backtracing structure allocated for the buffer,
as found by valgrind.

Fixes #2069.
This commit is contained in:
Hanno Becker 2018-10-09 12:39:13 +01:00
parent 7a539a57d7
commit f690ffa53c
1 changed files with 2 additions and 1 deletions
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3
programs/ssl/ssl_server2.c
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@ -2538,6 +2538,8 @@ exit:
mbedtls_ssl_cookie_free( &cookie_ctx ); mbedtls_ssl_cookie_free( &cookie_ctx );
#endif #endif
mbedtls_free( buf );
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#if defined(MBEDTLS_MEMORY_DEBUG) #if defined(MBEDTLS_MEMORY_DEBUG)
mbedtls_memory_buffer_alloc_status(); mbedtls_memory_buffer_alloc_status();
@ -2545,7 +2547,6 @@ exit:
mbedtls_memory_buffer_alloc_free(); mbedtls_memory_buffer_alloc_free();
#endif #endif
mbedtls_free( buf );
mbedtls_printf( " done.\n" ); mbedtls_printf( " done.\n" );
#if defined(_WIN32) #if defined(_WIN32)