From d401b9d77980e7469e1c6eaa282f33df0fcfb3df Mon Sep 17 00:00:00 2001
From: Taras Madan <tarasmadan@google.com>
Date: Thu, 21 Aug 2025 19:00:20 +0200
Subject: pkg/manager: add Rank column with tooltips to the main page

---
 pkg/manager/crash.go       | 12 ++++++++++++
 pkg/manager/html/main.html |  9 +++++++++
 pkg/manager/http.go        | 41 ++++++++++++++++++++++++++++++++---------
 3 files changed, 53 insertions(+), 9 deletions(-)

(limited to 'pkg/manager')

diff --git a/pkg/manager/crash.go b/pkg/manager/crash.go
index f0fa58959..a62ec8280 100644
--- a/pkg/manager/crash.go
+++ b/pkg/manager/crash.go
@@ -216,6 +216,7 @@ type CrashInfo struct {
 type BugInfo struct {
 	ID            string
 	Title         string
+	TailTitles    []*report.TitleFreqRank
 	FirstTime     time.Time
 	LastTime      time.Time
 	HasRepro      bool
@@ -223,6 +224,7 @@ type BugInfo struct {
 	StraceFile    string // relative to the workdir
 	ReproAttempts int
 	Crashes       []*CrashInfo
+	Rank          int
 }
 
 func (cs *CrashStore) BugInfo(id string, full bool) (*BugInfo, error) {
@@ -238,6 +240,16 @@ func (cs *CrashStore) BugInfo(id string, full bool) (*BugInfo, error) {
 		return nil, err
 	}
 	ret.Title = strings.TrimSpace(string(desc))
+
+	// Bug rank may go up over time if we observe higher ranked bugs as a consequence of the first failure.
+	ret.Rank = report.TitlesToImpact(ret.Title)
+	if titleStat, err := report.ReadStatFile(filepath.Join(dir, "title-stat")); err == nil {
+		ret.TailTitles = report.ExplainTitleStat(titleStat)
+		for _, ti := range ret.TailTitles {
+			ret.Rank = max(ret.Rank, ti.Rank)
+		}
+	}
+
 	ret.FirstTime = osutil.CreationTime(stat)
 	ret.LastTime = stat.ModTime()
 	files, err := osutil.ListDir(dir)
diff --git a/pkg/manager/html/main.html b/pkg/manager/html/main.html
index 42e92ac2b..43652cbf6 100644
--- a/pkg/manager/html/main.html
+++ b/pkg/manager/html/main.html
@@ -26,6 +26,7 @@ Use of this source code is governed by Apache 2 LICENSE that can be found in the
 	<thead>
 	<tr>
 		<th><a onclick="return sortTable(this, 'Description', textSort)" href="#">Description</a></th>
+		<th><a onclick="return sortTable(this, 'Rank', numSort)" href="#">Rank</a></th>
 		<th><a onclick="return sortTable(this, 'Count', numSort)" href="#">Count</a></th>
 		<th><a onclick="return sortTable(this, 'First Time', textSort, true)" href="#">First Time</a></th>
 		<th><a onclick="return sortTable(this, 'Last Time', textSort, true)" href="#">Last Time</a></th>
@@ -37,6 +38,14 @@ Use of this source code is governed by Apache 2 LICENSE that can be found in the
 	{{range $c := $.Crashes}}
 	<tr>
 		<td class="title"><a href="/crash?id={{$c.ID}}">{{$c.Title}}</a></td>
+		<td class="rank {{if not $c.Active}}inactive{{end}}">
+			{{if $c.RankTooltip}}
+				<b>{{$c.Rank}}</b>
+				<pre class="tooltiptext">{{$c.RankTooltip}}</pre>
+			{{else}}
+				{{$c.Rank}}
+			{{end}}
+		</td>
 		<td class="stat {{if not $c.Active}}inactive{{end}}">{{len $c.Crashes}}</td>
 		<td class="time {{if not $c.New}}inactive{{end}}">{{formatTime $c.FirstTime}}</td>
 		<td class="time {{if not $c.Active}}inactive{{end}}">{{formatTime $c.LastTime}}</td>
diff --git a/pkg/manager/http.go b/pkg/manager/http.go
index e6a7d6b46..61d208f41 100644
--- a/pkg/manager/http.go
+++ b/pkg/manager/http.go
@@ -29,6 +29,7 @@ import (
 	"github.com/google/syzkaller/pkg/html/pages"
 	"github.com/google/syzkaller/pkg/log"
 	"github.com/google/syzkaller/pkg/mgrconfig"
+	"github.com/google/syzkaller/pkg/report"
 	"github.com/google/syzkaller/pkg/stat"
 	"github.com/google/syzkaller/pkg/vcs"
 	"github.com/google/syzkaller/pkg/vminfo"
@@ -355,12 +356,33 @@ func makeUICrashType(info *BugInfo, startTime time.Time, repros map[string]bool)
 	triaged := reproStatus(info.HasRepro, info.HasCRepro, repros[info.Title],
 		info.ReproAttempts >= MaxReproAttempts)
 	return UICrashType{
-		BugInfo: *info,
-		New:     info.FirstTime.After(startTime),
-		Active:  info.LastTime.After(startTime),
-		Triaged: triaged,
-		Crashes: crashes,
+		BugInfo:     *info,
+		RankTooltip: higherRankTooltip(info.Title, info.TailTitles),
+		New:         info.FirstTime.After(startTime),
+		Active:      info.LastTime.After(startTime),
+		Triaged:     triaged,
+		Crashes:     crashes,
+	}
+}
+
+// higherRankTooltip generates the prioritized list of the titles with higher Rank
+// than the firstTitle has.
+func higherRankTooltip(firstTitle string, titlesInfo []*report.TitleFreqRank) string {
+	baseRank := report.TitlesToImpact(firstTitle)
+	res := ""
+	for _, ti := range titlesInfo {
+		if ti.Rank <= baseRank {
+			continue
+		}
+		res += fmt.Sprintf("[rank %2v, freq %5.1f%%] %s\n",
+			ti.Rank,
+			100*float32(ti.Count)/float32(ti.Total),
+			ti.Title)
+	}
+	if res != "" {
+		return fmt.Sprintf("[rank %2v,  originally] %s\n%s", baseRank, firstTitle, res)
 	}
+	return res
 }
 
 var crashIDRe = regexp.MustCompile(`^\w+$`)
@@ -1024,10 +1046,11 @@ type UICrashPage struct {
 
 type UICrashType struct {
 	BugInfo
-	New     bool // was first found in the current run
-	Active  bool // was found in the current run
-	Triaged string
-	Crashes []UICrash
+	RankTooltip string
+	New         bool // was first found in the current run
+	Active      bool // was found in the current run
+	Triaged     string
+	Crashes     []UICrash
 }
 
 type UICrash struct {
-- 
cgit mrf-deployment