Here is the excerpt of a stack trace that is double freeing:
#11 0x081a39db in CRYPTO_free (str=0x0) at mem.c:378
#12 0x081b1fa6 in ERR_get_state () at err.c:605
#13 0x081b2023 in get_error_values (inc=1, top=0, file=0x0, line=0x0,
data=0x0, flags=0x0) at err.c:748
#14 0x081b22d9 in ERR_get_error () at err.c:708Note that this is different than the one I reported earlier. I think that both code paths result in this problem, and I'm still not sure it's not an error in my code.
I'm still doing diagnostics, but my schedule is frenetic, so it might take a while. If anyone has any thoughts on what might be going on, or a clue as to what to look at, it would be appreciated.
Chris...
Dr. Stephen Henson wrote:
On Sat, Mar 12, 2005, cmb wrote:
I'm having some difficulty diagnosing a double free that appears to be within the openssl library. I assume I'm feeding it bad data, but I'm having a great deal of difficulty bringing openssl under the gdb microscope.
This is what I've been able to determine. My application aborts inside SSL_get_error when my memory debugger detects a double free. I have managed to figure out where my call is being made from, however inspecting the data I'm calling with is proving exceptionally difficult because gdb won't backtrace into the ssl library or beyond it. The stack trace appears to end when it enters the memory debugger library free() call.
If the lack of stack trace is a characteristic of the OpenSSL library, is there a way to turn it off, or if this is because I've done something insane, let me know and I'll look into that deeper.
I don't normally have any problems doing a gdb stack trace unless something has been seriously corrupted.
Have you compiled OpenSSL with debugging symbols?
Steve. -- Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage OpenSSL project core developer and freelance consultant. Funding needed! Details on homepage. Homepage: http://www.drh-consultancy.demon.co.uk ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
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