From: "tiejun.chen" <tiejun.chen@windriver.com>
To: Kevin Hao <haokexin@gmail.com>
Cc: linuxppc <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH] powerpc: add a missing label in resume_kernel
Date: Wed, 10 Apr 2013 16:43:21 +0800 [thread overview]
Message-ID: <51652629.9030905@windriver.com> (raw)
In-Reply-To: <1365582684-11136-1-git-send-email-haokexin@gmail.com>
On 04/10/2013 04:31 PM, Kevin Hao wrote:
> A label 0 was missed in the patch a9c4e541 (powerpc/kprobe: Complete
> kprobe and migrate exception frame). This will cause the kernel
> branch to an undetermined address if there really has a conflict when
> updating the thread flags.
>
> Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-By: Tiejun Chen <tiejun.chen@windriver.com>
> Cc: stable@vger.kernel.org
> ---
> arch/powerpc/kernel/entry_64.S | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
> index 256c5bf..ab079ed 100644
> --- a/arch/powerpc/kernel/entry_64.S
> +++ b/arch/powerpc/kernel/entry_64.S
> @@ -657,7 +657,7 @@ resume_kernel:
> /* Clear _TIF_EMULATE_STACK_STORE flag */
> lis r11,_TIF_EMULATE_STACK_STORE@h
> addi r5,r9,TI_FLAGS
> - ldarx r4,0,r5
> +0: ldarx r4,0,r5
> andc r4,r4,r11
> stdcx. r4,0,r5
> bne- 0b
>
prev parent reply other threads:[~2013-04-10 8:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-10 8:31 [PATCH] powerpc: add a missing label in resume_kernel Kevin Hao
2013-04-10 8:43 ` tiejun.chen [this message]
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