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Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_probe.c2
-rw-r--r--kernel/trace/trace_probe.h1
2 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 0dc13bff2847..bf9d3d7e0c9d 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -554,6 +554,8 @@ int traceprobe_parse_probe_arg(struct trace_probe *tp, int i, char *arg,
body = strchr(arg, '=');
if (body) {
+ if (body - arg > MAX_ARG_NAME_LEN || body == arg)
+ return -EINVAL;
parg->name = kmemdup_nul(arg, body - arg, GFP_KERNEL);
body++;
} else {
diff --git a/kernel/trace/trace_probe.h b/kernel/trace/trace_probe.h
index 8a63f8bc01bc..2177c206de15 100644
--- a/kernel/trace/trace_probe.h
+++ b/kernel/trace/trace_probe.h
@@ -32,6 +32,7 @@
#define MAX_TRACE_ARGS 128
#define MAX_ARGSTR_LEN 63
#define MAX_ARRAY_LEN 64
+#define MAX_ARG_NAME_LEN 32
#define MAX_STRING_SIZE PATH_MAX
/* Reserved field names */