linux-kernel - Re: [PATCH 1/2] tools lib symbol: Use strtoul instead of hex2u64 in kallsyms_

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Message-ID: <20180129071810.GA5774@krava>
Date:   Mon, 29 Jan 2018 08:18:10 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 1/2] tools lib symbol: Use strtoul instead of hex2u64 in
 kallsyms__parse

On Fri, Jan 26, 2018 at 07:27:06PM +0200, Andy Shevchenko wrote:
> On Fri, Jan 26, 2018 at 7:22 PM, Andy Shevchenko
> <andy.shevchenko@...il.com> wrote:
> > On Fri, Jan 19, 2018 at 6:11 PM, Jiri Olsa <jolsa@...nel.org> wrote:
> >> Current kallsyms__parse uses hex2u64, which gives
> >> no indication of error. Using strtoul to checkup
> >> on failed attempt to parse the number and stop the
> >> rest of the kallsyms__parse processing early.
> >
> >> +               start = strtoul(line, &endptr, 16);
> >> +               if (line == endptr)
> >> +                       continue;
> >> +
> >> +               len = endptr - line + 1;
> >>
> >> -               len++;
> >>                 if (len + 2 >= line_len)
> >>                         continue;
> >
> > https://patchwork.kernel.org/patch/4087681/
> 
> Even second attempt including recent ping left without consideration.
> 
> http://lkml.iu.edu/hypermail/linux/kernel/1407.0/02791.html

I see, sry we overlooked it.. could you please repost it?

thanks,
jirka