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

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Date:   Fri, 26 Jan 2018 19:22:53 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     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 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/


-- 
With Best Regards,
Andy Shevchenko