[openssl-users] CTX_free crash

[dE]

On 04/20/15 00:10, Salz, Rich wrote:
>> Sometimes, the program crashes when doing an SSL_CTX_free; before the
>> crash, ctx is an invalid pointer, that's why I can get a valid value from
>> SSL_CTX_get_max_cert_list (ctx), so it's not a double free problem.
> You mean it's a VALID pointer?
>
> We'll need a more detailed backtrace.
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I mean it's not null or does not hold garbage.

#0  0x00007ffff6d54210 in ?? () from /usr/lib64/libssl.so.1.0.0
#1  0x00007ffff67cac4d in ?? () from /usr/lib64/libcrypto.so.1.0.0
#2  0x00007ffff67cb14f in lh_delete () from /usr/lib64/libcrypto.so.1.0.0
#3  0x00007ffff6d5ab14 in ?? () from /usr/lib64/libssl.so.1.0.0
#4  0x00007ffff67cb3cc in lh_doall_arg () from /usr/lib64/libcrypto.so.1.0.0
#5  0x00007ffff6d5afc7 in SSL_CTX_flush_sessions () from 
/usr/lib64/libssl.so.1.0.0
#6  0x00007ffff6d55f0a in SSL_CTX_free () from /usr/lib64/libssl.so.1.0.0

Wait for the debugging symbols...