SELinux: possible NULL deref in context_struct_to_string

[~andy/linux] / kernel / kexec.c

diff --git a/kernel/kexec.c b/kernel/kexec.c
index a6a675cb9818ad43728ba7246472f62b44fcd23b..4e2e472f6aeb35e5fb78e9a6ccdcc4c08fae57e3 100644 (file)
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -37,7 +37,6 @@
 #include <asm/page.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
-#include <asm/system.h>
 #include <asm/sections.h>
 
 /* Per cpu memory for storing cpu states in case of system crash. */
@@ -1359,6 +1358,10 @@ static int __init parse_crashkernel_simple(char          *cmdline,
 
        if (*cur == '@')
                *crash_base = memparse(cur+1, &cur);
+       else if (*cur != ' ' && *cur != '\0') {
+               pr_warning("crashkernel: unrecognized char\n");
+               return -EINVAL;
+       }
 
        return 0;
 }
@@ -1462,7 +1465,9 @@ static int __init crash_save_vmcoreinfo_init(void)
 
        VMCOREINFO_SYMBOL(init_uts_ns);
        VMCOREINFO_SYMBOL(node_online_map);
+#ifdef CONFIG_MMU
        VMCOREINFO_SYMBOL(swapper_pg_dir);
+#endif
        VMCOREINFO_SYMBOL(_stext);
        VMCOREINFO_SYMBOL(vmlist);