From: Andy Lutomirski <luto@amacapital.net>
To: Andy Lutomirski <luto@kernel.org>
Cc: X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Brian Gerst <brgerst@gmail.com>, Borislav Petkov <bp@alien8.de>,
Jann Horn <jann@thejh.net>, Linux API <linux-api@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
Tycho Andersen <tycho.andersen@canonical.com>
Subject: Re: [PATCH 0/3] ABI CHANGE!!! Remove questionable remote SP reads
Date: Mon, 3 Oct 2016 16:08:24 -0700 [thread overview]
Message-ID: <CALCETrULWhzph=kpbQUQSEkmsm6ZaRtp_bV9j5LFaFjLkawwMw@mail.gmail.com> (raw)
In-Reply-To: <cover.1475257877.git.luto@kernel.org>
On Fri, Sep 30, 2016 at 10:58 AM, Andy Lutomirski <luto@kernel.org> wrote:
> Jann Horn noticed that KSTK_ESP + eager task stack freeing was a bad
> combination and could crash. I could very easily fix it to not
> crash, but I think that using KSTK_ESP on a remote task is
> questionable in general. Therefore, I propose to get rid of the
> major users for 4.9.
Ping!
We need to decide fairly soon whether to apply these (or perhaps just
patch 1 or just patches 2 and 3) for 4.9. For any parts that aren't
applied, I'll send quick fixups to pin the stack in the offending
code.
--Andy
WARNING: multiple messages have this Message-ID (diff)
From: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
To: Andy Lutomirski <luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: X86 ML <x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Brian Gerst <brgerst-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>,
Jann Horn <jann-XZ1E9jl8jIdeoWH0uzbU5w@public.gmane.org>,
Linux API <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Kees Cook <keescook-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Tycho Andersen
<tycho.andersen-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
Subject: Re: [PATCH 0/3] ABI CHANGE!!! Remove questionable remote SP reads
Date: Mon, 3 Oct 2016 16:08:24 -0700 [thread overview]
Message-ID: <CALCETrULWhzph=kpbQUQSEkmsm6ZaRtp_bV9j5LFaFjLkawwMw@mail.gmail.com> (raw)
In-Reply-To: <cover.1475257877.git.luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
On Fri, Sep 30, 2016 at 10:58 AM, Andy Lutomirski <luto-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> Jann Horn noticed that KSTK_ESP + eager task stack freeing was a bad
> combination and could crash. I could very easily fix it to not
> crash, but I think that using KSTK_ESP on a remote task is
> questionable in general. Therefore, I propose to get rid of the
> major users for 4.9.
Ping!
We need to decide fairly soon whether to apply these (or perhaps just
patch 1 or just patches 2 and 3) for 4.9. For any parts that aren't
applied, I'll send quick fixups to pin the stack in the offending
code.
--Andy
next prev parent reply other threads:[~2016-10-03 23:08 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-30 17:58 [PATCH 0/3] ABI CHANGE!!! Remove questionable remote SP reads Andy Lutomirski
2016-09-30 17:58 ` Andy Lutomirski
2016-09-30 17:58 ` [PATCH 1/3] proc: Stop reporting eip and esp in /proc/PID/stat Andy Lutomirski
2016-09-30 17:58 ` Andy Lutomirski
2016-09-30 18:56 ` Jann Horn
2016-09-30 18:56 ` Jann Horn
2016-10-01 2:01 ` Andy Lutomirski
2016-10-01 2:01 ` Andy Lutomirski
2016-10-01 4:22 ` Linus Torvalds
2016-10-01 4:22 ` Linus Torvalds
2016-10-01 10:37 ` Jann Horn
2016-10-01 10:37 ` Jann Horn
2016-10-14 18:25 ` Andy Lutomirski
2016-10-14 18:25 ` Andy Lutomirski
2016-10-14 20:01 ` Tycho Andersen
2016-10-20 11:13 ` [tip:mm/urgent] fs/proc: " tip-bot for Andy Lutomirski
2016-11-01 14:36 ` [4.9-rc3] BUG: unable to handle kernel paging request at ffffc900144dfc60 Tetsuo Handa
2016-11-01 23:47 ` Linus Torvalds
2016-11-02 10:50 ` Tetsuo Handa
2016-11-02 14:05 ` Andy Lutomirski
2016-11-02 14:05 ` Andy Lutomirski
2016-11-02 14:54 ` Linus Torvalds
2016-11-03 6:32 ` Ingo Molnar
2016-11-03 7:09 ` [tip:sched/urgent] sched/core: Fix oops in sched_show_task() tip-bot for Tetsuo Handa
2016-11-03 7:10 ` [tip:sched/urgent] sched/core: Remove pointless printout " tip-bot for Linus Torvalds
2016-09-30 17:58 ` [PATCH 2/3] proc: Stop trying to report thread stacks Andy Lutomirski
2016-10-20 11:13 ` [tip:mm/urgent] fs/proc: " tip-bot for Andy Lutomirski
2016-09-30 17:58 ` [PATCH 3/3] mm: Change vm_is_stack_for_task() to vm_is_stack_for_current() Andy Lutomirski
2016-09-30 17:58 ` Andy Lutomirski
2016-10-20 11:14 ` [tip:mm/urgent] " tip-bot for Andy Lutomirski
2016-10-03 23:08 ` Andy Lutomirski [this message]
2016-10-03 23:08 ` [PATCH 0/3] ABI CHANGE!!! Remove questionable remote SP reads Andy Lutomirski
2016-10-03 23:17 ` Linus Torvalds
2016-10-03 23:17 ` Linus Torvalds
2016-10-04 7:06 ` Raymond Jennings
2016-10-04 7:06 ` Raymond Jennings
2016-10-14 18:26 ` Andy Lutomirski
2016-10-14 18:26 ` Andy Lutomirski
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