4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adam Borowski <kilobyte@xxxxxxxxxx> 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@xxxxxxxxxx To: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> To: Steven Rostedt <rostedt@xxxxxxxxxxx> To: linux-kernel@xxxxxxxxxxxxxxx Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Joe Perches <joe@xxxxxxxxxxx> Cc: Kees Cook <keescook@xxxxxxxxxxxx> Cc: "Roberts, William C" <william.c.roberts@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: David Laight <David.Laight@xxxxxxxxxx> Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Signed-off-by: Adam Borowski <kilobyte@xxxxxxxxxx> Signed-off-by: Petr Mladek <pmladek@xxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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.