validateProcessSpec: prevent SEGV when config is valid json, but invalid.

JFHwang · JFHwang · commit 186e89d5c0b3 · 2020-05-16T18:15:16.000-07:00
Signed-off-by: John Hwang &lt;John.F.Hwang@gmail.com&gt;
diff --git a/utils_linux.go b/utils_linux.go
@@ -378,6 +378,9 @@ func (r *runner) checkTerminal(config *specs.Process) error {
 }
 
 func validateProcessSpec(spec *specs.Process) error {
+	if spec == nil {
+		return fmt.Errorf("process property must not be empty")
+	}
 	if spec.Cwd == "" {
 		return errors.New("Cwd property must not be empty")
 	}

Original file line number	Diff line number	Diff line change
`@@ -378,6 +378,9 @@ func (r runner) checkTerminal(config specs.Process) error {`
`378`	`378`	`}`
`379`	`379`
`380`	`380`	`func validateProcessSpec(spec *specs.Process) error {`
	`381`	`+ if spec == nil {`
	`382`	`+ return fmt.Errorf("process property must not be empty")`
	`383`	`+ }`
`381`	`384`	`if spec.Cwd == "" {`
`382`	`385`	`return errors.New("Cwd property must not be empty")`
`383`	`386`	`}`