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From Matteo Corti <>
Subject Re: [users@httpd] segmentation fault with SSLCertificateChainFile
Date Wed, 05 Jul 2006 15:48:50 GMT
Hash: SHA1

Joshua Slive wrote:
> On 7/4/06, Matteo Corti <> wrote:
>> Hash: SHA1
>> Hi,
>> I am managing several web servers with a very similar configuration. On
>> one instance I get a segmentation fault if I specify the
>> SSLCertificateChainFile option (I am using 2.0.58).
>> If I remove the directive the problem disappears.
>> - - the certificate file is OK (it is the very same file I use for other
>>   instances which are working w/o problems)
>> - - executing httpd with strace I get the following

Dear Joshua.

many thanks but I hoped that there was something easier that I was
missing. In any case I recompiled httpd with debugging support and
discovered the following:

httpd is crashing in

0x0044feaa in sk_pop_free () from

(gdb) bt
#0  0x0051f39a in sk_pop_free () from
#1  0x0928e458 in ?? ()
#2  0x092dcb50 in ?? ()
#3  0xbfffc4c8 in ?? ()
#4  0x0040d9f7 in SSL_CTX_use_certificate_chain (ctx=0x0, file=0xc14d90
"S\203ì\fè", skipfirst=16302628, cb=0x3fc820
<ssl_config_global_isfixed>) at ssl_util_ssl.c:488
Previous frame inner to this frame (corrupt stack?)

Now: I know that I could begin to analyze the sources and debug them to
see why it is crashing but my laziness makes me ask again if someone had
some previous experience with a similar problem (i.e., segfaults using
chained SSL certificates).

If this a new issue I suppose I'll have to dig into the source by myself :-)

Thanks again,

Matteo Corti

- --
Matteo Corti
ETH Zurich
Informatikdienste / Basisdienste
Version: GnuPG v1.4.4 (GNU/Linux)


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