linux-kernel - Re: [RFC][PATCH v2 7/7] checkpatch: add pF/pf deprecation warning

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170921002717.GA773@jagdpanzerIV.localdomain>
Date:   Thu, 21 Sep 2017 09:27:17 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        James Bottomley <jejb@...isc-linux.org>,
        Helge Deller <deller@....de>, Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jessica Yu <jeyu@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        linux-ia64@...r.kernel.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Andy Whitcroft <apw@...onical.com>
Subject: Re: [RFC][PATCH v2 7/7] checkpatch: add pF/pf deprecation warning

On (09/20/17 10:38), Joe Perches wrote:
> On Thu, 2017-09-21 at 01:29 +0900, Sergey Senozhatsky wrote:
> > We deprecated '%pF/%pf' printk specifiers, since '%pS/%ps' is now smart
> > enough to handle function pointer dereference on platforms where such
> > dereference is required.
> > 
> > checkpatch warning example:
> > 
> > WARNING: Use '%pS/%ps' instead. This pointer extension was deprecated: '%pF'
> 
> If this series is accepted,  I think this message
> is unclear and would prefer something like:

sure, can tweak the patch.

[..]
>  			if ($bad_extension ne "") {
>  				my $stat_real = raw_line($linenr, 0);
> +				my $ext_type = "Invalid";
> +				my $use = "";
>  				for (my $count = $linenr + 1; $count <= $lc; $count++) {
>  					$stat_real = $stat_real . "\n" . raw_line($count, 0);
>  				}
> +				if ($bad_extension =~ /p[Ff]/i) {
						I think /i is not necessary here

> +					$ext_type = "Deprecated";
> +					$use = " - use %pS instead";
> +					$use =~ s/pS/ps/ if ($bad_extension =~ /pf/);
							ok, handy :)

	-ss