libbinder: driver unfinished write error code

This fatal log used to be hidden inside of a function (Parcel::remove)
which always failed, and so when it was removed, the error gained
context, but I failed to include other relevant information in the log,
such as the error code.

Bug: 154144726
Test: m only
Change-Id: I477aaee1a335a9faf8c9b249a97c979c08bc4ebf

1 files changed, 5 insertions, 1 deletions

diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index 9e89c57da3..d67ce15ca9 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -997,7 +997,11 @@ status_t IPCThreadState::talkWithDriver(bool doReceive)
     if (err >= NO_ERROR) {
         if (bwr.write_consumed > 0) {
             if (bwr.write_consumed < mOut.dataSize())
-                LOG_ALWAYS_FATAL("Driver did not consume write buffer");
+                LOG_ALWAYS_FATAL("Driver did not consume write buffer. "
+                                 "err: %s consumed: %zu of %zu",
+                                 statusToString(err).c_str(),
+                                 (size_t)bwr.write_consumed,
+                                 mOut.dataSize());
             else {
                 mOut.setDataSize(0);
                 processPostWriteDerefs();