skill: Check return value of str*chr() in check_proc().

diff --git a/skill.c b/skill.c
index 27a1dd772d8b8897f4de33f7abe7b3ebad985979..edc42053a57cec1f2b673c9a31e74b018b0cb407 100644 (file)
--- a/skill.c
+++ b/skill.c
@@ -204,6 +204,8 @@ static void check_proc(int pid, struct run_time_conf_t *run_time)
                goto closure;
        buf[len] = '\0';
        tmp = strrchr(buf, ')');
+       if (!tmp)
+               goto closure;
        *tmp++ = '\0';
        i = 5;
        while (i--)
@@ -218,7 +220,10 @@ static void check_proc(int pid, struct run_time_conf_t *run_time)
                if (i == -1)
                        goto closure;
        }
-       tmp = strchr(buf, '(') + 1;
+       tmp = strchr(buf, '(');
+       if (!tmp)
+               goto closure;
+       tmp++;
        if (cmds) {
                i = cmd_count;
                /* fast comparison trick -- useful? */