Greetings,
we had the following segfault:

(gdb) bt
#0 0x00007f6b82cb14d0 in ?? () from
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#1 0xca62c1d6ca62c1d6 in ?? ()
#2 0xca62c1d6ca62c1d6 in ?? ()
#3 0xca62c1d6ca62c1d6 in ?? ()
#4 0xca62c1d6ca62c1d6 in ?? ()
#5 0xca62c1d6ca62c1d6 in ?? ()
#6 0xca62c1d6ca62c1d6 in ?? ()
#7 0xca62c1d6ca62c1d6 in ?? ()
#8 0xca62c1d6ca62c1d6 in ?? ()
#9 0x00007f6b8301c929 in ?? () from
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#10 0x00007f6b341e8b30 in ?? ()
#11 0x0000000000000016 in ?? ()
#12 0x00007f6b82cad900 in SHA1_Update () from
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#13 0x00007f6b82d2fe0f in RAND_load_file () from
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#14 0x00007f6b85488a85 in curl_multi_perform () from
/usr/lib/x86_64-linux-gnu/libcurl.so.4

More details:

libcurl version is 7.35.0, with the following patch manually applied:
multi: fix *getsock() with CONNECT
https://gitlab.pluribusgames.com/mirrors/curl/commit/c19349951df1fde96c31d68e054e3a36a3b03860

This patch allows us to work with proxies via https.

The multi-handle had a single easy handle added to it at the time of the
crash. This easy handle was a DELETE OBJECT request to Amazon S3 service.
This request was to be performed via https through the proxy of type
CURLPROXY_HTTP, and the following proxy-related parameters were set:
CURLOPT_PROXY "10.20.2.118"
CURLOPT_PROXYPORT 3128
CURLOPT_PROXYTYPE – was not set at all
CURLOPT_PROXYUSERNAME, CURLOPT_PROXYPASSWORD were set

For now we have seen this crash only once.

Thanks,
Alex.

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Received on 2015-10-06