From: Christoph Lameter <cl@linux.com>
To: "Robert Święcki" <robert@swiecki.net>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: mmap/clone returns ENOMEM with lots of free memory
Date: Mon, 7 May 2012 15:15:46 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.00.1205071514040.6029@router.home> (raw)
In-Reply-To: <CAP145pjtv-S2oHhn8_QfLKF8APtut4B9qPXK5QM8nQbxzPd2gw@mail.gmail.com>
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On Mon, 7 May 2012, Robert Święcki wrote:
> root@ise-test:~/kern-fuz# ./cont.sh
> su: Cannot fork user shell
> su: Cannot fork user shell
> su: Cannot fork user shell
>
> root@ise-test:~/kern-fuz# strace -e mmap,clone su test -c 'kill -CONT
> -1' 2>&1 | grep "= \-1"
> clone(child_stack=0,
> flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
> child_tidptr=0x7fadf334f9f0) = -1 ENOMEM (Cannot allocate memory)
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = -1 ENOMEM (Cannot allocate memory)
Hmmm... That looks like some maximum virtual memory limit was violated.
Check ulimit and the overcommit settings (see /proc/meminfo's commitlimit
etc)
next prev parent reply other threads:[~2012-05-07 20:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-07 15:54 Robert Święcki
2012-05-07 20:15 ` Christoph Lameter [this message]
2012-05-07 21:41 ` Robert Święcki
2012-05-08 14:02 ` Christoph Lameter
2012-05-08 14:47 ` Robert Święcki
2012-05-08 15:31 ` Alan Cox
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