virtiofsd: Check if PID is valid

If try to kill with an not valid PID the thread goes to panic, check to allow return a valid error from the runtime. Signed-off-by: Jose Carlos Venegas Munoz <[email protected]>
kata-containers · Mar 19, 2020 · 6a4e667 · 6a4e667
1 parent 3251bea
commit 6a4e667
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/virtcontainers/virtiofsd.go b/virtcontainers/virtiofsd.go
@@ -217,6 +217,10 @@ func (v *virtiofsd) kill() (err error) {
 	span, _ := v.trace("kill")
 	defer span.Finish()
 
+	if v.PID == 0 {
+		return errors.New("invalid virtiofsd PID(0)")
+	}
+
 	err = syscall.Kill(v.PID, syscall.SIGKILL)
 	if err != nil {
 		v.PID = 0