From: Dave Jones <davej@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Joe Perches <joe@perches.com>, Dave Chinner <david@fromorbit.com>,
viro@zeniv.linux.org.uk,
Linux Kernel <linux-kernel@vger.kernel.org>,
David Rientjes <rientjes@google.com>
Subject: Re: suppress page allocation failure warnings from sys_listxattr
Date: Wed, 28 Mar 2012 21:50:59 -0400 [thread overview]
Message-ID: <20120329015059.GA22697@redhat.com> (raw)
In-Reply-To: <20120328184602.e6b11a37.akpm@linux-foundation.org>
On Wed, Mar 28, 2012 at 06:46:02PM -0700, Andrew Morton wrote:
> Could. There was some discussion last year and implementations were
> tossed around.
>
> I'm a bit apprehensive - kernel code is supposed to be robust, and
> large allocations are not robust and vmalloc() is crappy.
Can you expand on crappy ? Also, what happens if something allocates
and sits on a bunch of vmalloc'd memory ? would we start seeing oom kills ?
(thinking of the context of my fuzzing tool where a bunch of instances could
feasibly call these syscalls and not sit on huge amounts per thread, but
collectively... I'm wondering if it could be provoked into killing
processes I don't own)
Dave
next prev parent reply other threads:[~2012-03-29 1:51 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-13 18:22 suppress page allocation failure warnings from sys_listxattr Dave Jones
2012-03-13 21:33 ` Colin Walters
2012-03-27 22:51 ` Andrew Morton
2012-03-28 0:15 ` Dave Jones
2012-03-28 0:26 ` Andrew Morton
2012-03-28 7:13 ` David Rientjes
2012-03-28 4:39 ` Dave Chinner
2012-03-28 23:47 ` Andrew Morton
2012-03-29 0:54 ` Dave Jones
2012-03-29 1:10 ` Andrew Morton
2012-03-29 1:28 ` Joe Perches
2012-03-29 1:46 ` Andrew Morton
2012-03-29 1:50 ` Dave Jones [this message]
2012-03-29 2:02 ` Andrew Morton
2012-03-29 2:08 ` Dave Jones
2012-03-29 2:28 ` Andrew Morton
2012-03-29 3:00 ` Dave Jones
2012-03-29 21:09 ` Andrew Morton
2012-03-29 21:13 ` Dave Jones
2012-03-29 5:35 ` Dave Chinner
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