Re: Help: libcurl debug

my curl version is : 7.35.0

On Fri, May 15, 2020 at 2:56 AM Kunal Chauhan <atkunalchauhan_at_gmail.com>
wrote:

> Hi Team,
>
> Belwo is the whole story regarding libcurl usage and issue: please guide
> for the same !
> //some crash is happening as shown below
> point1 ; gdb) bt
> > #0 0xb66e8ee4 in strlen () from /lib/libc.so.6
> > #1 0xb6da3854 in ?? () from /opt/qcom/lib/libcurl.so.4
> > #2 ---Type <return> to continue, or q <return> to quit--
>
> //Detailed reagaring CURL usage in my application
>
> Point2: below is the sequence of functions I am executing and 2nd one is
> executing 5 time approx
>
> 1.curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist);
>
> 2.curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION,
> ipr_cwmp_WriteMemoryCallback); //each time this functions is enter and exit
>
> 3. curl_easy_setopt(curl, CURLOPT_WRITEDATA,(void *)&chunk);
>
>
>
> Note: Below is the detailed of my custom functions same as reference from
> curl documentation:
>
> size_t ipr_cwmp_WriteMemoryCallback(void *contents,
>
> 128 size_t size,
>
> 129 size_t nmemb,
>
> 130 void *userp)
>
> 131 {
>
> 132 /* debug fix start */
>
> 133 TRACE(LOG_CRITICAL , HTTP_CONNECTION, " debug 23
> ipr_cwmp_WriteMemoryCallback\n");
>
> 134 /* debug fix end */
>
> 135 size_t realsize = size * nmemb;
>
> 136 struct MemoryStruct *mem = (struct MemoryStruct *)userp;
>
> 137 mem->memory = TR_REALLOC(mem->memory, mem->size + realsize + 1 );
>
> 138
>
> 139 //if(mem->memory == PNULL)
>
> 140 //mem->memory = calloc(1,2000);
>
> 141
>
> 142 TRACE (LOG_DETAIL , HTTP_CONNECTION, "Entering in %s
> ",__FUNCTION__);
>
> 143 if (mem->memory == PNULL)
>
> 144 {
>
> 145 /* out of memory! */
>
> 146 TRACE (LOG_CRITICAL , HTTP_CONNECTION, "Exiting in %s
> ",__FUNCTION__);
>
> 147 exit(EXIT_FAILURE);
>
> 148 }
>
> 149 ENB_MEMCPY(&(mem->memory[mem->size]), contents, realsize);
>
> 150 mem->size += realsize;
>
> 151 mem->memory[mem->size] = 0;
>
> 152 TRACE (LOG_DETAIL , HTTP_CONNECTION, "Exiting in %s
> ",__FUNCTION__);
>
> 153 return realsize;
>
> 154 }
>
>
>
>
> On Fri, May 15, 2020 at 2:12 AM Daniel Stenberg <daniel_at_haxx.se> wrote:
>
>> On Thu, 14 May 2020, Kunal Chauhan via curl-library wrote:
>>
>> > 1.My code that is using " libcurl.so.4 " and some crash is happening in
>> > application that is using libcurl.so.4
>>
>> That's the main SONAME number we've used since 2006. So yes, that's the
>> name
>> of the shared libcurl version used by everyone.
>>
>> You should rather tell us:
>>
>> 1. which libcurl version you're using (the full curl -V output is useful)
>> 2. what you did that caused the issue
>>
>> > 2. It showing in gdb and last frame is showing some strlen+36.
>>
>> Unfortunately that doesn't help anyone much. Either you didn't use
>> libcurl
>> correctly in your application or perhaps there's a libcurl bug you ran
>> into.
>>
>> With need MANY more details to be able to help.
>>
>> --
>>
>> / daniel.haxx.se | Commercial curl support up to 24x7 is available!
>> | Private help, bug fixes, support, ports, new features
>> | https://www.wolfssl.com/contact/
>>
>
>
> --
> *Thanks with Regards!*
>
> *Kunal Chauhan*
> *Mob:09813614826*
> *Mob:08860397903*
>
> *E-mail:atkunalchauhan_at_gmail.com <E-mail%3Aatkunalchauhan_at_gmail.com>*
>
>

-- 
*Thanks with Regards!*
*Kunal Chauhan*
*Mob:09813614826*
*Mob:08860397903*
*E-mail:atkunalchauhan_at_gmail.com <E-mail%3Aatkunalchauhan_at_gmail.com>*

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Received on 2020-05-14