linux-kernel - Re: [PATCH 2/2] exec: increase BINPRM_BUF

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Message-ID: <20181122121521.GB28270@redhat.com>
Date:   Thu, 22 Nov 2018 13:15:22 +0100
From:   Oleg Nesterov <oleg@...hat.com>
To:     Alan Cox <gnomes@...rguk.ukuu.org.uk>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Ben Woodard <woodard@...hat.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Kees Cook <keescook@...omium.org>,
        Michal Hocko <mhocko@...e.com>, linux-kernel@...r.kernel.org,
        linux-man@...r.kernel.org
Subject: Re: [PATCH 2/2] exec: increase BINPRM_BUF_SIZE to 256

On 11/16, Alan Cox wrote:
>
> On Mon, 12 Nov 2018 17:09:56 +0100
> Oleg Nesterov <oleg@...hat.com> wrote:
>
> > Large enterprise clients often times run applications out of networked
> > file systems where the IT mandated layout of project volumes can end up
> > leading to paths that are longer than 128 characters. Bumping this up to
> > the next order of two solves this problem in all but the most egregious
> > case while still fitting into a 512b slab.
>
> You also need to update the execve manual page as it explicitly documents
> the 128 byte limit.

Thanks, Eugene sent the patch:

	[PATCH] execve.2: document an effect of BINPRM_BUF_SIZE increase to 256
	https://marc.info/?l=linux-man&m=154281645706657

Oleg.