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-rw-r--r--kernel/kexec.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 2a0deffa5dbe..4e2e472f6aeb 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1358,6 +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;
}
@@ -1461,7 +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);