Commit 3a129cc2 authored Feb 04, 2018 by Adam Borowski Committed by Petr Mladek Feb 08, 2018

vsprintf: avoid misleading "(null)" for %px

Like %pK already does, print "00000000" instead.

This confused people -- the convention is that "(null)" means you tried to
dereference a null pointer as opposed to printing the address.

Link: http://lkml.kernel.org/r/20180204174521.21383-1-kilobyte@angband.pl


To: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Joe Perches <joe@perches.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Roberts, William C" <william.c.roberts@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Petr Mladek <pmladek@suse.com>

parent ab486bc9

lib/vsprintf.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1849,7 +1849,7 @@ char pointer(const char fmt, char buf, char end, void *ptr,
		{
		const int default_width = 2 * sizeof(void *);

		if (!ptr && *fmt != 'K') {
		if (!ptr && fmt != 'K' && fmt != 'x') {
		/*
		* Print (null) with the same width as a pointer so it makes
		* tabular output look nice.