commit 897e7631c5c8fbeddd7d817238f76774b5874e2b
author renjietang <renjietang@google.com> Tue Apr 14 12:27:13 2020 -0700
committer Copybara-Service <copybara-worker@google.com> Tue Apr 14 12:27:42 2020 -0700
tree 72ebc203606fa6d2b2cbe8eb3753a1a0175d1756
parent 897763c6a49afd6c97b7ab9f22639ca0bb81b69d

Explicitly construct StringPiece from grease data to avoid msan failure.

gfe-relnote: no behavior change. not protected.
PiperOrigin-RevId: 306491242
Change-Id: Iace5c82eeb1a10636a1d1ab76f567bdf470a52ac

quic/core/crypto/transport_parameters.cc

diff --git a/quic/core/crypto/transport_parameters.cc b/quic/core/crypto/transport_parameters.cc
index 30a9880..6c3f3c5 100644
--- a/quic/core/crypto/transport_parameters.cc
+++ b/quic/core/crypto/transport_parameters.cc
@@ -827,8 +827,9 @@
     char grease_contents[kMaxGreaseLength];
     random->RandBytes(grease_contents, grease_length);
     if (!WriteTransportParameterId(&writer, grease_id, version) ||
-        !WriteTransportParameterStringPiece(&writer, grease_contents,
-                                            version)) {
+        !WriteTransportParameterStringPiece(
+            &writer, quiche::QuicheStringPiece(grease_contents, grease_length),
+            version)) {
       QUIC_BUG << "Failed to write GREASE parameter "
                << TransportParameterIdToString(grease_id);
       return false;