x86, boot: Sanitize boot_params if not zeroed on creation

[deliverable/linux.git] / arch / x86 / kernel / head64.c

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 037df57a99ac34d5ba1a5cab5abaa4554e0689d0..849fc9e63c2ffd875ba23d7bb2ea879ac756c30f 100644 (file)
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -25,6 +25,7 @@
 #include <asm/kdebug.h>
 #include <asm/e820.h>
 #include <asm/bios_ebda.h>
+#include <asm/bootparam_utils.h>
 
 static void __init zap_identity_mappings(void)
 {
@@ -46,6 +47,7 @@ static void __init copy_bootdata(char *real_mode_data)
        char * command_line;
 
        memcpy(&boot_params, real_mode_data, sizeof boot_params);
+       sanitize_boot_params(&boot_params);
        if (boot_params.hdr.cmd_line_ptr) {
                command_line = __va(boot_params.hdr.cmd_line_ptr);
                memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);