Merge release-20200219.0-122-g6fa5cee (automated)

4 files changed, 16 insertions, 7 deletions

diff --git a/pkg/sentry/fs/dirent_cache.go b/pkg/sentry/fs/dirent_cache.go
index 25514ace4..33de32c69 100644
--- a/pkg/sentry/fs/dirent_cache.go
+++ b/pkg/sentry/fs/dirent_cache.go
@@ -101,8 +101,6 @@ func (c *DirentCache) remove(d *Dirent) {
 		panic(fmt.Sprintf("trying to remove %v, which is not in the dirent cache", d))
 	}
 	c.list.Remove(d)
-	d.SetPrev(nil)
-	d.SetNext(nil)
 	d.DecRef()
 	c.currentSize--
 	if c.limit != nil {
diff --git a/pkg/sentry/fs/dirent_list.go b/pkg/sentry/fs/dirent_list.go
index 49d25da6c..acdce100c 100755
--- a/pkg/sentry/fs/dirent_list.go
+++ b/pkg/sentry/fs/dirent_list.go
@@ -135,8 +135,9 @@ func (l *direntList) InsertBefore(a, e *Dirent) {
 
 // Remove removes e from l.
 func (l *direntList) Remove(e *Dirent) {
-	prev := direntElementMapper{}.linkerFor(e).Prev()
-	next := direntElementMapper{}.linkerFor(e).Next()
+	linker := direntElementMapper{}.linkerFor(e)
+	prev := linker.Prev()
+	next := linker.Next()
 
 	if prev != nil {
 		direntElementMapper{}.linkerFor(prev).SetNext(next)
@@ -149,6 +150,9 @@ func (l *direntList) Remove(e *Dirent) {
 	} else {
 		l.tail = prev
 	}
+
+	linker.SetNext(nil)
+	linker.SetPrev(nil)
 }
 
 // Entry is a default implementation of Linker. Users can add anonymous fields
diff --git a/pkg/sentry/fs/event_list.go b/pkg/sentry/fs/event_list.go
index 786686592..0274f41a2 100755
--- a/pkg/sentry/fs/event_list.go
+++ b/pkg/sentry/fs/event_list.go
@@ -135,8 +135,9 @@ func (l *eventList) InsertBefore(a, e *Event) {
 
 // Remove removes e from l.
 func (l *eventList) Remove(e *Event) {
-	prev := eventElementMapper{}.linkerFor(e).Prev()
-	next := eventElementMapper{}.linkerFor(e).Next()
+	linker := eventElementMapper{}.linkerFor(e)
+	prev := linker.Prev()
+	next := linker.Next()
 
 	if prev != nil {
 		eventElementMapper{}.linkerFor(prev).SetNext(next)
@@ -149,6 +150,9 @@ func (l *eventList) Remove(e *Event) {
 	} else {
 		l.tail = prev
 	}
+
+	linker.SetNext(nil)
+	linker.SetPrev(nil)
 }
 
 // Entry is a default implementation of Linker. Users can add anonymous fields
diff --git a/pkg/sentry/fs/inotify.go b/pkg/sentry/fs/inotify.go
index 928c90aa0..e3a715c1f 100644
--- a/pkg/sentry/fs/inotify.go
+++ b/pkg/sentry/fs/inotify.go
@@ -143,7 +143,10 @@ func (i *Inotify) Read(ctx context.Context, _ *File, dst usermem.IOSequence, _ i
 	}
 
 	var writeLen int64
-	for event := i.events.Front(); event != nil; event = event.Next() {
+	for it := i.events.Front(); it != nil; {
+		event := it
+		it = it.Next()
+
 		// Does the buffer have enough remaining space to hold the event we're
 		// about to write out?
 		if dst.NumBytes() < int64(event.sizeOf()) {