nginx tries to allocate a huge number of memory and fails

[Mauro Stettler]

thanks a lot for the helpful answer maxim,

i will try that.

mauro



On Thu, Aug 4, 2011 at 14:29, Maxim Dounin <mdounin at mdounin.ru> wrote:
> Hello!
>
> On Thu, Aug 04, 2011 at 11:47:08AM +0800, Mauro Stettler wrote:
>
>> hi
>>
>> i'm having a strange case where nginx is trying to allocate some
>> really huge amount of memory. we created a new vhost on nginx to
>> provide an internal interface to flush the apc cache of php. in most
>> of the cases i can request this and get what i expected, only in
>> around 20% of the request nginx is trying to allocate a huge number of
>> memory and fails, so it returns 500 internal server error.
>>
>> 2011/08/04 05:14:00 [emerg] 41529#0: *89012062 malloc()
>> 18446744073709545066 bytes failed (12: Cannot allocate memory),
>> client: 192.168.1.195, server: *.kaufmich.vpn, request: "GET
>> /web1/apc/flushApc.php HTTP/1.1", host: "static.kaufmich.vpn"
>>
>>
>>
>> does anybody have an idea why that would happen? i thought this almost
>> has to be a bug because the amount of bytes it is trying to allocate
>> is just so huge it just cant be right.
>
> [...]
>
>> # nginx -V
>> nginx version: nginx/0.7.65
>
> [...]
>
>>         if ($request_uri ~* /(.+)/(.+\.php)) {
>>                 set $prod_server $1;
>>                 set $action $2;
>>                 set $script $3;
>>                 set $parameters "";
>
> This is a problem with using unitialized $n variables.  Note the
> above regexp has only 2 captures but following "set" uses variable
> "$3".
>
> This problem is fixed in 0.8.25+.  Please upgrade.
>
> Maxim Dounin
>
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