Here's the code that's causing the leak. It only happens on a non-existent file.
BIO bio = BIO_new_file("does-not-exist", "r");
// dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
I still don't know how to clear it, however.
Is there some *_cleanup() I missed? Does order matter?
Jeff
On Mon, Feb 10, 2014 at 7:50 PM, Jeffrey Walton <[email protected]> wrote:
> I'm trying to remediate a couple of memory leaks on shutdown. I'm
> having trouble: (1) locating a definitive guide that lists what should
> be called during cleanup; and (2) what order they should be called in.
>
> The closest I've find to answering the questions are (1) OpenSSL
> source code; and (2)
> http://marc.info/?l=openssl-dev&m=104999183723322&w=2. OpenSSL source
> code is a bit confusing because the various programs and demos mostly
> do things differently. The openssl-dev posting is good, but I've still
> got some leaks.
>
> I start the application with:
>
> CRYPTO_malloc_debug_init();
> CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
>
> SSL_library_init();
> SSL_load_error_strings();
> FIPS_mode_set(1);
> // Install static locks
> // Create Client Context
> // Create Server Context
> // Load DH params
>
> I shutdown the application with the following (in this order):
>
> FIPS_mode_set(0);
> // Remove static locks
> // Destroy Client Context
> // Destroy Server Context
> // Unload DH params
> ENGINE_cleanup();
> CONF_modules_unload(1);
> EVP_cleanup();
> CRYPTO_cleanup_all_ex_data();
> ERR_remove_state(0);
> ERR_free_strings();
>
> Then I dump state:
>
> CRYPTO_mem_leaks_fp(stderr);
>
> This results in the following (in addition to a Valgrind complaint):
>
> Debug: dumping OpenSSL memory state
> 4206 file=err.c, line=1019, number=600, address=065CFDC0
> 4120 file=lhash.c, line=119, number=176, address=065BEFA0
>> thread=67351016, file=err.c, line=449, info="int_thread_get (err.c)"
> 4207 file=lhash.c, line=193, number=24, address=065D0150
> 4121 file=lhash.c, line=121, number=128, address=065BF180
>> thread=67351016, file=err.c, line=449, info="int_thread_get (err.c)"
> 928 bytes leaked in 4 chunks
>
> What order are these functions supposed to be called in to cleanup the
> leak in "err.c"?
>
> Thanks in advance
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