Log the cmd when the binder driver fails to consume buffer
Test: atest binderLibTest
Bug: 364732944
Change-Id: Ida27b189aba7f99156e0f4da46531162a1d48542
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index 1d26d85..6698d0c 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -232,6 +232,15 @@
return cmd;
}
+static void printReturnCommandParcel(std::ostream& out, const Parcel& parcel) {
+ const void* cmds = parcel.data();
+ out << "\t" << HexDump(cmds, parcel.dataSize()) << "\n";
+ IF_LOG_COMMANDS() {
+ const void* end = parcel.data() + parcel.dataSize();
+ while (cmds < end) cmds = printReturnCommand(out, cmds);
+ }
+}
+
static const void* printCommand(std::ostream& out, const void* _cmd) {
static const size_t N = sizeof(kCommandStrings)/sizeof(kCommandStrings[0]);
const int32_t* cmd = (const int32_t*)_cmd;
@@ -1235,13 +1244,15 @@
if (err >= NO_ERROR) {
if (bwr.write_consumed > 0) {
- if (bwr.write_consumed < mOut.dataSize())
+ if (bwr.write_consumed < mOut.dataSize()) {
+ std::ostringstream logStream;
+ printReturnCommandParcel(logStream, mIn);
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 {
+ "err: %s consumed: %zu of %zu.\n"
+ "Return command: %s",
+ statusToString(err).c_str(), (size_t)bwr.write_consumed,
+ mOut.dataSize(), logStream.str().c_str());
+ } else {
mOut.setDataSize(0);
processPostWriteDerefs();
}
@@ -1252,14 +1263,8 @@
}
IF_LOG_COMMANDS() {
std::ostringstream logStream;
- logStream << "Remaining data size: " << mOut.dataSize() << "\n";
- logStream << "Received commands from driver: ";
- const void* cmds = mIn.data();
- const void* end = mIn.data() + mIn.dataSize();
- logStream << "\t" << HexDump(cmds, mIn.dataSize()) << "\n";
- while (cmds < end) cmds = printReturnCommand(logStream, cmds);
- std::string message = logStream.str();
- ALOGI("%s", message.c_str());
+ printReturnCommandParcel(logStream, mIn);
+ ALOGI("%s", logStream.str().c_str());
}
return NO_ERROR;
}