Details
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Bug
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Resolution: Done
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P2: Important
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5.5.0
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2ccb9f03c534c28b1c3d2f2d09d131a70cdfe9f3 cc3a0d7c39196937edf98c80d0c0a9f96443f6b6
Description
The Valgrind log attached was got when running the 'quicknanobrowser' example from QtWebEngine by accessing website http://hao.qianjiayue.com/appall/application/cncto/pet_1/ and sliding each photo by pressing Enter key and Left or Right key. Memory consumption of QtWebEngineProcess always increases.
=24477== Source and destination overlap in memcpy(0x22163260, 0x22163260, 32592) ==24477== at 0x4C2A690: memcpy (mc_replace_strmem.c:838) ==24477== by 0x8447CAA: SkBitmap::copyPixelsTo(void*, unsigned long, unsigned long, bool) const (SkBitmap.cpp:454) ==24477== by 0xA3E3AFB: blink::ImageFrameGenerator::decodeAndScale(SkImageInfo const&, unsigned long, void*, unsigned long) (in /opt/src/michael/Qtwebengine_release/build_pc/ install/lib/libQt5WebEngineCore.so.5.5.0) ==24477== by 0xA3CC354: blink::DecodingImageGenerator::onGetPixels(SkImageInfo const&, void*, unsigned long, unsigned int*, int*) (in /opt/src/michael/Qtwebengine_release/b uild_pc/install/lib/libQt5WebEngineCore.so.5.5.0) ==24477== by 0x84D65B9: SkImageGenerator::getPixels(SkImageInfo const&, void*, unsigned long, unsigned int*, int*) (SkImageGenerator.cpp:42) ==24477== by 0x84AD174: SkDiscardablePixelRef::onNewLockPixels(SkPixelRef::LockRec*) (SkDiscardablePixelRef.cpp:67) ==24477== by 0x851FEFF: SkPixelRef::lockPixels(SkPixelRef::LockRec*) (SkPixelRef.cpp:147) ==24477== by 0x8520008: SkPixelRef::lockPixels() (SkPixelRef.cpp:160) ==24477== by 0x84472D3: SkBitmap::lockPixels() const (SkBitmap.cpp:225) ==24477== by 0x844BE30: SkAutoLockPixels::SkAutoLockPixels(SkBitmap const&, bool) (SkBitmap.h:785) ==24477== by 0x846FA0D: SkBitmapScaler::Resize(SkBitmap*, SkBitmap const&, SkBitmapScaler::ResizeMethod, float, float, SkBitmap::Allocator*) (SkBitmapScaler.cpp:285) ==24477== by 0x8467BAA: SkBitmapProcState::possiblyScaleImage() (SkBitmapProcState.cpp:179)
Looking at it, it seems to be it is a known bug in Chromium and has been fixed in July. See: https://code.google.com/p/chromium/issues/detail?id=422485&can=1&q=Stability%3DValgrind&colspec=ID%20Stars%20Pri%20Area%20Feature%20Type%20Status%20Summary%20Modified%20Owner%20Mstone%20OS&start=100
Attachments
For Gerrit Dashboard: QTBUG-48822 | ||||||
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# | Subject | Branch | Project | Status | CR | V |
138255,2 | <third_party/WebKit> [Backport] Lock the bitmap before calling getPixels(). | 40.0.2214-based | qt/qtwebengine-chromium | Status: MERGED | +2 | 0 |
138731,2 | Include memory leak fix in the 3rdparty submodule. | 5.5 | qt/qtwebengine | Status: MERGED | +2 | 0 |