Bugs item #2805358, was opened at 2009-06-12 12:23
Message generated for change (Settings changed) made by bagder
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https://sourceforge.net/tracker/?func=detail&atid=100976&aid=2805358&group_id=976

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Category: libcurl
Group: crash
>Status: Pending
Resolution: Works For Me
Priority: 5
Private: No
Submitted By: Lisong Guo (guolisong)
Assigned to: Daniel Stenberg (bagder)
Summary: curl crash during POST operation

Initial Comment:
There is a curl crash during a normal POST operation. The version I experienced was libcurl 7.15.3
Here is the stack backtrack:
#0 0x00002ad751d6a892 in curl_free () from /usr/lib64/libcurl.so.3
#1 0x00002ad751d6aad0 in curl_msnprintf () from /usr/lib64/libcurl.so.3
#2 0x00002ad751d6bb35 in curl_mvsnprintf () from /usr/lib64/libcurl.so.3
#3 0x00002ad751d5cdef in Curl_failf () from /usr/lib64/libcurl.so.3
#4 0x00002ad751d56418 in Curl_resolv () from /usr/lib64/libcurl.so.3
#5 0x00002ad751d65abe in Curl_connect () from /usr/lib64/libcurl.so.3

Seem like libcurl would coredump when it could not build a connection to server. By the way, I've set the CURLOPT_TIMEOUT option to 30 seconds. And the crash happened under large load.

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Comment By: Daniel Stenberg (bagder)
Date: 2009-06-19 00:42

Message:
Thanks for reporting this issue and helping us improve curl and libcurl.

We're awaiting feedback in this issue. Due to this, I have set the state
of this issue to pending and it will automatically get closed later on
unless we get further info.

Please consider answering the outstanding questions or providing the
missing info so that we can proceed to resolve this issue!

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Comment By: Daniel Stenberg (bagder)
Date: 2009-06-16 19:55

Message:
We do POST all the time, and so do a million apps using libcurl.

Can you please show us a complete example that causes a coredump for you?

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Comment By: Lisong Guo (guolisong)
Date: 2009-06-16 08:26

Message:
No. I just replaced the libcurl.so.3 with the new libcurl.so.4 in 7.19.5.

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Comment By: Dan Fandrich (dfandrich)
Date: 2009-06-16 08:24

Message:
The name of the library in curl 7.19.5 is libcurl.so.4, so you must still
be using the old version (or, you're using Debian).

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Comment By: Lisong Guo (guolisong)
Date: 2009-06-16 07:49

Message:
The bug seemed to be resolved in 7.19.5.
But there is another similar coredump during my testing. As follows:

#0 0x00002b44933adba2 in addbyter () from /usr/lib64/libcurl.so.3
#1 0x00002b44933addf0 in dprintf_formatf () from /usr/lib64/libcurl.so.3
#2 0x00002b44933aef05 in curl_mvsnprintf () from /usr/lib64/libcurl.so.3
#3 0x00002b449339d49f in Curl_failf () from /usr/lib64/libcurl.so.3
#4 0x00002b4493395b45 in Curl_resolv_timeout () from
/usr/lib64/libcurl.so.3
#5 0x00002b44933a7a37 in Curl_connect () from /usr/lib64/libcurl.so.3
#6 0x00002b44933b3fea in Curl_perform () from /usr/lib64/libcurl.so.3

Any idea would be appreciated !

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Comment By: Daniel Stenberg (bagder)
Date: 2009-06-12 16:11

Message:
This bug is reported in an older version and seems (or is possible) to have
been corrected in a more recent version.

If you can please upgrade and try it again with the latest version, it
would help a lot!

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You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=100976&aid=2805358&group_id=976
Received on 2009-06-19