From: Oleg Nesterov <oleg@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Grazvydas Ignotas <notasas@gmail.com>,
Felipe Contreras <felipe.contreras@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@elte.hu>, Denys Vlasenko <dvlasenk@redhat.com>
Subject: Re: [PATCH 0/1] (Was: Linux 3.11-rc4)
Date: Wed, 7 Aug 2013 21:27:34 +0200 [thread overview]
Message-ID: <20130807192734.GA8395@redhat.com> (raw)
In-Reply-To: <CA+55aFxt1iqJXW=bsETugWVxj9LwZXkq0FT836YMJVsRP9juEQ@mail.gmail.com>
On 08/07, Linus Torvalds wrote:
>
> It's a security issue: setting debug traps on kernel code/data
> addresses can not only leak information, it can cause serious trouble
> (taking a debug trap on the first instruction of an NMI handler etc)
> including kernel stack corruption...
I guess Grazvydas only meant the "unnecessary" align/len/type checks.
But you are right of course.
Oleg.
next prev parent reply other threads:[~2013-08-07 19:33 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-04 21:09 Linux 3.11-rc4 Linus Torvalds
2013-08-05 2:34 ` O_TMPFILE fs corruption (Re: Linux 3.11-rc4) Andy Lutomirski
2013-08-05 3:45 ` Linus Torvalds
2013-08-05 4:45 ` Andrew Lutomirski
2013-08-05 8:26 ` Christoph Hellwig
2013-08-05 16:04 ` Jörn Engel
2013-08-05 14:31 ` Al Viro
2013-08-05 4:20 ` Linux 3.11-rc4 Felipe Contreras
2013-08-05 13:29 ` Oleg Nesterov
2013-08-05 14:27 ` Felipe Contreras
2013-08-05 14:39 ` Oleg Nesterov
2013-08-05 17:02 ` Felipe Contreras
2013-08-05 17:11 ` Oleg Nesterov
2013-08-05 17:40 ` Felipe Contreras
2013-08-05 17:56 ` Oleg Nesterov
2013-08-05 17:39 ` Linus Torvalds
2013-08-05 17:43 ` Felipe Contreras
2013-08-05 18:08 ` Felipe Contreras
2013-08-05 17:47 ` Oleg Nesterov
2013-08-05 18:46 ` Oleg Nesterov
2013-08-05 18:54 ` Linus Torvalds
2013-08-05 18:57 ` Oleg Nesterov
2013-08-05 19:06 ` Linus Torvalds
2013-08-06 15:43 ` [PATCH 0/1] (Was: Linux 3.11-rc4) Oleg Nesterov
2013-08-06 15:43 ` [PATCH 1/1] Revert "ptrace: PTRACE_DETACH should do flush_ptrace_hw_breakpoint(child)" Oleg Nesterov
2013-08-07 12:05 ` [PATCH 0/1] (Was: Linux 3.11-rc4) Grazvydas Ignotas
2013-08-07 17:22 ` Oleg Nesterov
2013-08-07 19:26 ` Linus Torvalds
2013-08-07 19:27 ` Oleg Nesterov [this message]
2013-08-07 19:47 ` Linus Torvalds
2013-08-08 15:41 ` Oleg Nesterov
2013-08-08 16:25 ` Linus Torvalds
2013-08-08 16:54 ` Frederic Weisbecker
2013-08-08 18:15 ` Oleg Nesterov
2013-08-09 16:45 ` Frederic Weisbecker
2013-08-09 17:12 ` Oleg Nesterov
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