All of lore.kernel.org
 help / color / mirror / Atom feed
From: Andrew Morton <akpm@linux-foundation.org>
To: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] posix-timers: fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW
Date: Tue, 4 Aug 2009 00:57:53 -0700	[thread overview]
Message-ID: <20090804005753.99e21163.akpm@linux-foundation.org> (raw)
In-Reply-To: <4A77E62D.8070803@ct.jp.nec.com>

On Tue, 04 Aug 2009 16:41:33 +0900 Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> wrote:

> Userspace program is like this;
> 
> #include <time.h>
> 
> int main(void)
> {
> 	struct timespec ts;
> 
> 	ts.tv_sec = 1;
> 	ts.tv_nsec = 0;
> 
> 	return clock_nanosleep(4, 0, &ts, NULL);
> }
> 
> and it will cause oops;
> 
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000001

Well that's not very good.

How far back does this go?  posix-timers.c hasn't changed in several
kernel versions.


  reply	other threads:[~2009-08-04  7:58 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-03  2:48 [PATCH] posix-timers: fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW Hiroshi Shimamoto
2009-08-04  7:22 ` Andrew Morton
2009-08-04  7:41   ` Hiroshi Shimamoto
2009-08-04  7:57     ` Andrew Morton [this message]
2009-08-04  8:06       ` Hiroshi Shimamoto
2009-08-04  8:21 ` [tip:timers/urgent] posix-timers: Fix " tip-bot for Hiroshi Shimamoto

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=20090804005753.99e21163.akpm@linux-foundation.org \
    --to=akpm@linux-foundation.org \
    --cc=h-shimamoto@ct.jp.nec.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.