linux-kernel - Re: [PATCH 1/2] ras: fix an off-by-one error in __find

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Message-ID: <CAM_iQpVj5AtkgM3j1cTz8YXPG52Er9se7HnJ=PGWAuspDfRc7w@mail.gmail.com>
Date:   Thu, 18 Apr 2019 15:54:44 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     "Luck, Tony" <tony.luck@...el.com>
Cc:     Borislav Petkov <bp@...en8.de>,
        LKML <linux-kernel@...r.kernel.org>, linux-edac@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 1/2] ras: fix an off-by-one error in __find_elem()

On Wed, Apr 17, 2019 at 2:15 PM Luck, Tony <tony.luck@...el.com> wrote:
>
> On Tue, Apr 16, 2019 at 07:37:41PM -0700, Cong Wang wrote:
> > On Tue, Apr 16, 2019 at 7:31 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
> > > Yes it is, I have a stacktrace in production which clearly shows
> > > del_elem.isra.1+0x34/0x40, unlike the one I triggered via fake
> > > PFN's. I can show you if you want, it is on 4.14, so very unlikely
> > > it is interesting to anyone here.
> >
> > Correct myself:
> >
> > The one triggered via fake PFN's also shows
> > del_elem.constprop.1+0x39/0x40.
> >
> > Sorry for the mistake, I kinda read into another crash...
>
> Ok. Now I follow what you are saying. I'll try to rephrase
> here.

Yes, your detailed analysis is correct. Sorry if I caused any
confusion here.

>
>
> So I'm now liking this version of the patch by Cong:
>
...
> Reviewed-by: Tony Luck <tony.luck@...el.com>


Thanks for reviewing my patch!