From: Linus Torvalds <torvalds@linux-foundation.org>
To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
brgerst@gmail.com, torvalds@linux-foundation.org,
jolsa@redhat.com, stable@kernel.org, tglx@linutronix.de,
mingo@elte.hu
Cc: linux-tip-commits@vger.kernel.org
Subject: Re: [tip:perf/core] x86, 64-bit: Fix copy_[to/from]_user() checks for the userspace address limit
Date: Wed, 18 May 2011 13:54:09 -0700 [thread overview]
Message-ID: <BANLkTimoHTmSa4LwpN-FLiEwWVLfBetV8g@mail.gmail.com> (raw)
In-Reply-To: <tip-26afb7c661080ae3f1f13ddf7f0c58c4f931c22b@git.kernel.org>
On Wed, May 18, 2011 at 1:43 PM, tip-bot for Jiri Olsa <jolsa@redhat.com> wrote:
> As reported in BZ #30352:
>
> https://bugzilla.kernel.org/show_bug.cgi?id=30352
>
> there's a kernel bug related to reading the last allowed page on x86_64.
Btw, I think this message is very misleading.
It has nothing what-so-ever to do with "the last allowed page".
It is not about pages at all. It's about bytes. It's the very last
byte of the address space. The fact that the *test*program* uses mmap
and then sends a single page is totally irrelevant both for the kernel
and for the patch itself.
Linus
next prev parent reply other threads:[~2011-05-18 20:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 14:30 [PATCH] x86, x86_64: Fix checks for " Jiri Olsa
2011-05-16 11:42 ` Ingo Molnar
2011-05-18 4:48 ` Brian Gerst
2011-05-18 8:12 ` Ingo Molnar
2011-05-18 10:08 ` Linus Torvalds
2011-05-18 10:39 ` Ingo Molnar
2011-05-18 20:43 ` [tip:perf/core] x86, 64-bit: Fix copy_[to/from]_user() checks for the " tip-bot for Jiri Olsa
2011-05-18 20:54 ` Linus Torvalds [this message]
2011-05-18 20:59 ` Ingo Molnar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=BANLkTimoHTmSa4LwpN-FLiEwWVLfBetV8g@mail.gmail.com \
--to=torvalds@linux-foundation.org \
--cc=brgerst@gmail.com \
--cc=hpa@zytor.com \
--cc=jolsa@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=mingo@redhat.com \
--cc=stable@kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®