1 files changed, 10 insertions, 0 deletions

diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index 5ef48dab5636..11d460f6f9cc 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -783,6 +783,16 @@ void ldom_set_var(const char *var, const char *value)
                 char  *base, *p;
                 int msg_len, loops;
 
+                if (strlen(var) + strlen(value) + 2 >
+                    sizeof(pkt) - sizeof(pkt.header)) {
+                        printk(KERN_ERR PFX
+                                "contents length: %zu, which more than max: %lu,"
+                                "so could not set (%s) variable to (%s).\n",
+                                strlen(var) + strlen(value) + 2,
+                                sizeof(pkt) - sizeof(pkt.header), var, value);
+                        return;
+                }
+
                 memset(&pkt, 0, sizeof(pkt));
                 pkt.header.data.tag.type = DS_DATA;
                 pkt.header.data.handle = cp->handle;