manager: add ability to ignore bugs

Add new config parameter "ignores" which contains list of regexp expressions.
If one of the expressions is matched against oops line,
crash report is not saved and VM is not restarted.

1 files changed, 5 insertions, 4 deletions

diff --git a/vm/vm.go b/vm/vm.go
index d42ddd4cd..ce4138344 100644
--- a/vm/vm.go
+++ b/vm/vm.go
@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"regexp"
 	"syscall"
 	"time"
 
@@ -86,7 +87,7 @@ func LongPipe() (io.ReadCloser, io.WriteCloser, error) {
 
 var TimeoutErr = errors.New("timeout")
 
-func MonitorExecution(outc <-chan []byte, errc <-chan error, local, needOutput bool) (desc string, text, output []byte, crashed, timedout bool) {
+func MonitorExecution(outc <-chan []byte, errc <-chan error, local, needOutput bool, ignores []*regexp.Regexp) (desc string, text, output []byte, crashed, timedout bool) {
 	waitForOutput := func() {
 		dur := time.Second
 		if needOutput {
@@ -117,10 +118,10 @@ func MonitorExecution(outc <-chan []byte, errc <-chan error, local, needOutput b
 		if bytes.Contains(output, []byte("SYZ-FUZZER: PREEMPTED")) {
 			return "preempted", nil, nil, false, true
 		}
-		if !report.ContainsCrash(output[matchPos:]) {
+		if !report.ContainsCrash(output[matchPos:], ignores) {
 			return defaultError, nil, output, true, false
 		}
-		desc, text, start, end := report.Parse(output[matchPos:])
+		desc, text, start, end := report.Parse(output[matchPos:], ignores)
 		start = start + matchPos - beforeContext
 		if start < 0 {
 			start = 0
@@ -162,7 +163,7 @@ func MonitorExecution(outc <-chan []byte, errc <-chan error, local, needOutput b
 			if bytes.Index(output[matchPos:], []byte("executed programs:")) != -1 { // syz-execprog output
 				lastExecuteTime = time.Now()
 			}
-			if report.ContainsCrash(output[matchPos:]) {
+			if report.ContainsCrash(output[matchPos:], ignores) {
 				return extractError("")
 			}
 			if len(output) > 2*beforeContext {