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-rwxr-xr-xpkg/sentry/socket/netstack/netstack.go2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go
index 48c268bfa..1eeb37446 100755
--- a/pkg/sentry/socket/netstack/netstack.go
+++ b/pkg/sentry/socket/netstack/netstack.go
@@ -2663,7 +2663,9 @@ func (s *SocketOperations) Ioctl(ctx context.Context, _ *fs.File, io usermem.IO,
}
// Add bytes removed from the endpoint but not yet sent to the caller.
+ s.readMu.Lock()
v += len(s.readView)
+ s.readMu.Unlock()
if v > math.MaxInt32 {
v = math.MaxInt32