From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
Pavel Emelyanov <xemul@parallels.com>,
linux-kernel@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
linux-mm@kvack.org, Matt Helsley <matthltc@us.ibm.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH 3.5] c/r: prctl: less paranoid prctl_set_mm_exe_file()
Date: Sat, 16 Jun 2012 13:01:08 +0400 [thread overview]
Message-ID: <20120616090108.GC32029@moon> (raw)
In-Reply-To: <20120616085104.14682.16723.stgit@zurg>
On Sat, Jun 16, 2012 at 12:51:04PM +0400, Konstantin Khlebnikov wrote:
> "no other files mapped" requirement from my previous patch
> (c/r: prctl: update prctl_set_mm_exe_file() after mm->num_exe_file_vmas removal)
> is too paranoid, it forbids operation even if there mapped one shared-anon vma.
>
> Let's check that current mm->exe_file already unmapped, in this case exe_file
> symlink already outdated and its changing is reasonable.
>
> Plus, this patch fixes exit code in case operation success.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
> Reported-by: Cyrill Gorcunov <gorcunov@openvz.org>
Thanks, Konstantin, letme test it out...
Cyrill
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WARNING: multiple messages have this Message-ID (diff)
From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
Pavel Emelyanov <xemul@parallels.com>,
linux-kernel@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
linux-mm@kvack.org, Matt Helsley <matthltc@us.ibm.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH 3.5] c/r: prctl: less paranoid prctl_set_mm_exe_file()
Date: Sat, 16 Jun 2012 13:01:08 +0400 [thread overview]
Message-ID: <20120616090108.GC32029@moon> (raw)
In-Reply-To: <20120616085104.14682.16723.stgit@zurg>
On Sat, Jun 16, 2012 at 12:51:04PM +0400, Konstantin Khlebnikov wrote:
> "no other files mapped" requirement from my previous patch
> (c/r: prctl: update prctl_set_mm_exe_file() after mm->num_exe_file_vmas removal)
> is too paranoid, it forbids operation even if there mapped one shared-anon vma.
>
> Let's check that current mm->exe_file already unmapped, in this case exe_file
> symlink already outdated and its changing is reasonable.
>
> Plus, this patch fixes exit code in case operation success.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
> Reported-by: Cyrill Gorcunov <gorcunov@openvz.org>
Thanks, Konstantin, letme test it out...
Cyrill
next prev parent reply other threads:[~2012-06-16 9:01 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-16 8:51 [PATCH 3.5] c/r: prctl: less paranoid prctl_set_mm_exe_file() Konstantin Khlebnikov
2012-06-16 8:51 ` Konstantin Khlebnikov
2012-06-16 9:01 ` Cyrill Gorcunov [this message]
2012-06-16 9:01 ` Cyrill Gorcunov
2012-06-16 9:06 ` Cyrill Gorcunov
2012-06-16 9:06 ` Cyrill Gorcunov
2012-06-16 9:17 ` Cyrill Gorcunov
2012-06-16 9:17 ` Cyrill Gorcunov
2012-06-16 9:42 ` Konstantin Khlebnikov
2012-06-16 9:42 ` Konstantin Khlebnikov
2012-06-16 9:47 ` Cyrill Gorcunov
2012-06-16 9:47 ` Cyrill Gorcunov
2012-06-16 15:38 ` Konstantin Khlebnikov
2012-06-16 15:38 ` Konstantin Khlebnikov
2012-06-16 15:44 ` Cyrill Gorcunov
2012-06-16 15:44 ` Cyrill Gorcunov
2012-06-18 8:58 ` Cyrill Gorcunov
2012-06-18 8:58 ` Cyrill Gorcunov
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