Date: Tue, 28 Feb 2017 16:06:07 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Joe Perches <joe@...ches.com> Cc: Andy Whitcroft <apw@...onical.com>, "Roberts, William C" <william.c.roberts@...el.com>, kernel-hardening@...ts.openwall.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH] checkpatch: Add ability to find bad uses of vsprintf %p<foo> extensions On Mon, 27 Feb 2017 12:54:55 -0800 Joe Perches <joe@...ches.com> wrote: > %pK was at least once misused at %pk in an out-of-tree module. > This lead to some security concerns. Add the ability to track > single and multiple line statements for misuses of %p<foo>. Should we also do this? --- a/lib/vsprintf.c~checkpatch-add-ability-to-find-bad-uses-of-vsprintf-%pfoo-extensions-fix +++ a/lib/vsprintf.c @@ -1477,6 +1477,9 @@ int kptr_restrict __read_mostly; * by an extra set of alphanumeric characters that are extended format * specifiers. * + * Please update scripts/checkpatch.pl when adding new conversion characters. + * (search for "check for vsprintf extension"). + * * Right now we handle: * * - 'F' For symbolic function descriptor pointers with offset _
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