am ba5aebd1: am ac505b86: am f0556bb9: am 86d1d747: Merge "Add lock before calling initEglImage"
* commit 'ba5aebd106c61567ad6be905efd18902025735aa':
Add lock before calling initEglImage
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index c4027e0..b2f95cd 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -986,8 +986,16 @@
ssize_t index = mActiveBufferIndex;
if (index >= 0) {
if (!mFailover) {
- Image& texture(mBufferData[index].texture);
- err = mTextureManager.initEglImage(&texture, dpy, buffer);
+ {
+ // Without that lock, there is a chance of race condition
+ // where while composing a specific index, requestBuf
+ // with the same index can be executed and touch the same data
+ // that is being used in initEglImage.
+ // (e.g. dirty flag in texture)
+ Mutex::Autolock _l(mLock);
+ Image& texture(mBufferData[index].texture);
+ err = mTextureManager.initEglImage(&texture, dpy, buffer);
+ }
// if EGLImage fails, we switch to regular texture mode, and we
// free all resources associated with using EGLImages.
if (err == NO_ERROR) {