This is a note to let you know that I've just added the patch titled
vsprintf: avoid misleading "(null)" for %px
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: vsprintf-avoid-misleading-null-for-px.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 3a129cc2151425e5aeb69aeb25fbc994ec738137 Mon Sep 17 00:00:00 2001
From: Adam Borowski kilobyte@angband.pl Date: Sun, 4 Feb 2018 18:45:21 +0100 Subject: vsprintf: avoid misleading "(null)" for %px
From: Adam Borowski kilobyte@angband.pl
commit 3a129cc2151425e5aeb69aeb25fbc994ec738137 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- lib/vsprintf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -1849,7 +1849,7 @@ char *pointer(const char *fmt, char *buf { 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.
Patches currently in stable-queue which might be from kilobyte@angband.pl are
queue-4.15/vsprintf-avoid-misleading-null-for-px.patch