From: Ingo Molnar <mingo@elte.hu>
To: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"G. Vaughan" <gvaughan@jpl.nasa.gov>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] Fix check after use in kernel/exit.c
Date: Sat, 8 Mar 2008 09:36:37 +0100 [thread overview]
Message-ID: <20080308083637.GA23555@elte.hu> (raw)
In-Reply-To: <20080308.161105.253167431.xiyou.wangcong@gmail.com>
* WANG Cong <xiyou.wangcong@gmail.com> wrote:
> mm_release won't check the mm_struct pointer, so it should be checked
> before this call.
> @@ -582,9 +582,9 @@ static void exit_mm(struct task_struct * tsk)
> {
> struct mm_struct *mm = tsk->mm;
>
> - mm_release(tsk, mm);
> if (!mm)
> return;
> + mm_release(tsk, mm);
thanks, applied. I'm wondering why this never seems to hit in practice.
Ingo
next prev parent reply other threads:[~2008-03-08 8:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-08 8:11 [PATCH] Fix check after use in kernel/exit.c WANG Cong
2008-03-08 8:36 ` Ingo Molnar [this message]
2008-03-08 8:53 ` Ingo Molnar
2008-03-08 8:58 ` WANG Cong
2008-03-09 11:48 ` Ingo Molnar
2008-03-10 8:23 ` WANG Cong
2008-03-10 9:13 ` Ingo Molnar
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