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Re: gethostbyname_r leaks memory
From: |
Daniel Jacobowitz |
Subject: |
Re: gethostbyname_r leaks memory |
Date: |
Fri, 21 Mar 2003 11:53:12 -0500 |
User-agent: |
Mutt/1.5.1i |
On Fri, Mar 21, 2003 at 03:41:20PM -0000, Wolfram Gloger wrote:
> Hi,
>
> I can easily reproduce this problem.
>
> I have some evidence that the leak is caused by the following:
>
> if (EXT(statp).nsaddrs[n] == NULL)
> EXT(statp).nsaddrs[n] =
> malloc(sizeof (struct sockaddr_in6));
>
> from resolv/res_send.c near line 440, which is apparantly producing
> lots of small chunks which in the multi-thread case are never freed.
> Perhaps someone who understands the resolver logic better can fix it
> straight away? I might take a look too but it's probably going to
> take some time..
Are you trying with a current glibc? Roland McGrath fixed this just
before the release of glibc 2.3.2.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer