Your message dated Tue, 17 Jun 2014 19:51:18 +0200
with message-id <[email protected]>
and subject line Bug#537369: libc6: Theoretically possible malloc failure
causing the only arena to remain locked
has caused the Debian Bug report #537369,
regarding libc6: Theoretically possible malloc failure causing the only arena
to remain locked
to be marked as done.
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--
537369: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537369
Debian Bug Tracking System
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--- Begin Message ---
Package: libc6
Version: 2.7-18
Severity: normal
While developing mallocpool (https://sourceforge.net/projects/mallocpool/) I've
had the
opportunity to try various configuration options for my reworking of malloc.c,
such as
not using arenas.
In malloc.c this is defined as "the same as HAVE_MMAP" so that's set to 0 as
well, to
perform some simple tests.
I realise that the glibc used in Debian is built with WAVE_MMAP and USE_ARENAS
set to 1
but if some embedded system comes along where this isn't true then there may
well be a
problem.
This happens in __libc_malloc in the event of an allocation failure.
The attached patch fixes the problem.
-- System Information:
Debian Release: 5.0.2
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.26-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libc6 depends on:
ii libgcc1 1:4.3.2-1.1 GCC support library
libc6 recommends no packages.
Versions of packages libc6 suggests:
pn glibc-doc <none> (no description available)
ii locales 2.7-18 GNU C Library: National Language (
-- debconf information:
glibc/upgrade: true
glibc/restart-failed:
glibc/restart-services:
--- End Message ---
--- Begin Message ---
Version: 2.16-0experimental0
On Fri, Jul 17, 2009 at 03:53:29PM +0100, Philip Ashmore wrote:
> Package: libc6
> Version: 2.7-18
> Severity: normal
>
> While developing mallocpool (https://sourceforge.net/projects/mallocpool/)
> I've had the
> opportunity to try various configuration options for my reworking of
> malloc.c, such as
> not using arenas.
> In malloc.c this is defined as "the same as HAVE_MMAP" so that's set to 0 as
> well, to
> perform some simple tests.
>
> I realise that the glibc used in Debian is built with WAVE_MMAP and
> USE_ARENAS set to 1
> but if some embedded system comes along where this isn't true then there may
> well be a
> problem.
>
> This happens in __libc_malloc in the event of an allocation failure.
> The attached patch fixes the problem.
The HAVE_MMAP and USE_ARENAS defines have been removed upstream in
version 2.15, and appeared for the first time in Debian in version
2.16-0experimental0. Closing the bug accordingly
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
[email protected] http://www.aurel32.net
--- End Message ---
