ftrace: avoid modifying kprobe'd records

[safe/jmp/linux-2.6] / kernel / cpuset.c

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index bceb895..9fceb97 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1037,8 +1037,8 @@ int current_cpuset_is_being_rebound(void)
 
 static int update_relax_domain_level(struct cpuset *cs, s64 val)
 {
-       if ((int)val < 0)
-               val = -1;
+       if (val < -1 || val >= SD_LV_MAX)
+               return -EINVAL;
 
        if (val != cs->relax_domain_level) {
                cs->relax_domain_level = val;