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Re: [PATCH] fix KDB backtrace for ppc64

To: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Subject: Re: [PATCH] fix KDB backtrace for ppc64
From: linas@xxxxxxxxxxxxxx
Date: Wed, 5 May 2004 13:20:42 -0500
Cc: anton@xxxxxxxxx, kdb@xxxxxxxxxxx, linuxppc64-dev@xxxxxxxxxxxxxxxxxx
In-reply-to: <20040505141647.GA4678@in.ibm.com>; from ananth@in.ibm.com on Wed, May 05, 2004 at 07:16:47PM +0500
References: <20040505141647.GA4678@in.ibm.com>
Sender: kdb-bounce@xxxxxxxxxxx
User-agent: Mutt/1.2.5.1i
On Wed, May 05, 2004 at 07:16:47PM +0500, Ananth N Mavinakayanahalli wrote:
> @@ -200,25 +196,49 @@ kdba_bt_stack_ppc(struct pt_regs *regs, 
> +             if (!flag && (task_curr(p))) {
> +
> +                     lr = regs->link;

Its not obvious that regs might not be a null pointer.  Code
higher up tries to make sure that regs is set to something, 
but its not clear that every branch is correctly handled.

Other than that, the patch looks reasonable.

--linas

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