checkpatch: warn for use of %px

		    defined $stat &&

		    $stat =~ /^\+(?![^\{]*\{\s*).*\b(\w+)\s*\(.*$String\s*,/s &&

		    $1 !~ /^_*volatile_*$/) {

			my $bad_extension = "";

			my $specifier;

			my $extension;

			my $bad_specifier = "";

			my $stat_real;

			my $lc = $stat =~ tr@\n@@;

			$lc = $lc + $linenr;

		        for (my $count = $linenr; $count <= $lc; $count++) {

				my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0));

				$fmt =~ s/%%//g;

				if ($fmt =~ /(\%[\*\d\.]*p(?![\WSsBKRraEhMmIiUDdgVCbGNOx]).)/) {

					$bad_extension = $1;

				while ($fmt =~ /(\%[\*\d\.]*p(\w))/g) {

					$specifier = $1;

					$extension = $2;

					if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOx]/) {

						$bad_specifier = $specifier;

						last;

					}

					if ($extension eq "x" && !defined($stat_real)) {

						if (!defined($stat_real)) {

							$stat_real = get_stat_real($linenr, $lc);

						}

						WARN("VSPRINTF_SPECIFIER_PX",

						     "Using vsprintf specifier '\%px' potentially exposes the kernel memory layout, if you don't really need the address please consider using '\%p'.\n" . "$here\n$stat_real\n");

					}

			if ($bad_extension ne "") {

				}

				if ($bad_specifier ne "") {

					my $stat_real = get_stat_real($linenr, $lc);

					my $ext_type = "Invalid";

					my $use = "";

				if ($bad_extension =~ /p[Ff]/) {

					if ($bad_specifier =~ /p[Ff]/) {

						$ext_type = "Deprecated";

						$use = " - use %pS instead";

					$use =~ s/pS/ps/ if ($bad_extension =~ /pf/);

						$use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);

					}

					WARN("VSPRINTF_POINTER_EXTENSION",

				     "$ext_type vsprintf pointer extension '$bad_extension'$use\n" . "$here\n$stat_real\n");

					     "$ext_type vsprintf pointer extension '$bad_specifier'$use\n" . "$here\n$stat_real\n");

				}

			}

		}