From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: "Stoidner, Christoph" <c.stoidner@arvero.de>,
"xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] Some Information About compilation Xenomai and RT Patches
Date: Mon, 23 Jun 2014 11:40:20 +0200 [thread overview]
Message-ID: <53A7F604.7010709@xenomai.org> (raw)
In-Reply-To: <39ed57fee9f445d995e8d17a267c2fa0@EX132MBOX1B.de2.local>
On 06/23/2014 11:33 AM, Stoidner, Christoph wrote:
>
> Hi Gilles,
>
> when a userspace application starts it calls the brk() syscall to
> enlarge it's heap space. In some cases the call leads to an NOMEM
> error in fcse_check_mmap_addr(). Since glibc does not handle NOMEM
> error at this place the a segfault exception appears.
>
> It seems as this happens when brk() got an address above some limit,
> also when the process at all consumes less than 32MB RAM. E.g.
> busybox shell command "ls" is enough to get the segfault.
with the glibc versions I have been testing with the FCSE patch since it
exists, when brk fails, the glibc uses mmap to allocate memory, and
everything continues.
--
Gilles.
next prev parent reply other threads:[~2014-06-23 9:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-17 15:00 [Xenomai] Some Information About compilation Xenomai and RT Patches Jean Rodriguez
[not found] ` <be428e33f9f5482aa36cbc1654ec2db2@EX132MBOX1B.de2.local>
2014-06-20 8:50 ` Stoidner, Christoph
2014-06-20 9:00 ` Philippe Gerum
2014-06-20 9:02 ` Stoidner, Christoph
2014-06-20 11:50 ` Gilles Chanteperdrix
2014-06-23 9:33 ` Stoidner, Christoph
2014-06-23 9:40 ` Gilles Chanteperdrix [this message]
2014-06-23 9:53 ` Gilles Chanteperdrix
2014-06-23 10:04 ` Stoidner, Christoph
2014-06-23 23:41 ` Gilles Chanteperdrix
2014-06-24 6:37 ` Gilles Chanteperdrix
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