223864 2021-03-28 22:59:53 -0700 [GPU Process] Don't record DisplayList items if the GPU Process has been terminated 2021-03-29 15:38:32 -0700 1 1 1 Unclassified WebKit Canvas WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 sabouhallawa sabouhallawa dino simon.fraser thorton webkit-bug-importer wenson_hsieh oldest_to_newest 1744691 0 sabouhallawa 2021-03-28 22:59:53 -0700 Otherwise the following ASSERT_NOT_REACHED() will fire in Debug builds: SHOULD NEVER BE REACHED /Volumes/Data/worker/macOS-AppleSilicon-Big-Sur-Debug-Build-EWS/build/Source/WebKit/WebProcess/GPU/graphics/RemoteImageBufferProxy.h(300) : virtual WebCore::DisplayList::ItemBufferHandle WebKit::RemoteImageBufferProxy<WebKit::ImageBufferShareableMappedIOSurfaceBackend>::createItemBuffer(size_t) [BackendType = WebKit::ImageBufferShareableMappedIOSurfaceBackend] 1 0x132ef36e0 WTFCrash 2 0x10445c158 WTF::Ref<WebKit::IPCTestingAPI::JSIPC, WTF::RawPtrTraits<WebKit::IPCTestingAPI::JSIPC> > WTF::makeRef<WebKit::IPCTestingAPI::JSIPC>(WebKit::IPCTestingAPI::JSIPC&) 3 0x10410e9a0 WebKit::RemoteImageBufferProxy<WebKit::ImageBufferShareableMappedIOSurfaceBackend>::createItemBuffer(unsigned long) 4 0x117900710 WebCore::DisplayList::ItemBuffer::createItemBuffer(unsigned long) 5 0x117900ad0 WebCore::DisplayList::ItemBuffer::swapWritableBufferIfNeeded(unsigned long) 6 0x1179266c8 void WebCore::DisplayList::ItemBuffer::append<WebCore::DisplayList::Restore>() 7 0x11792667c void WebCore::DisplayList::DisplayList::append<WebCore::DisplayList::Restore>() 8 0x117908f80 void WebCore::DisplayList::Recorder::append<WebCore::DisplayList::Restore>() 9 0x117908eec WebCore::DisplayList::Recorder::restore() 10 0x1177182fc WebCore::GraphicsContext::restore() 11 0x113843a68 WebCore::GraphicsContextStateSaver::~GraphicsContextStateSaver() 12 0x113830910 WebCore::GraphicsContextStateSaver::~GraphicsContextStateSaver() 13 0x11681cd8c std::__1::default_delete<WebCore::GraphicsContextStateSaver>::operator()(WebCore::GraphicsContextStateSaver*) const 14 0x11681cd10 std::__1::unique_ptr<WebCore::GraphicsContextStateSaver, std::__1::default_delete<WebCore::GraphicsContextStateSaver> >::reset(WebCore::GraphicsContextStateSaver*) 15 0x1168103a8 std::__1::unique_ptr<WebCore::GraphicsContextStateSaver, std::__1::default_delete<WebCore::GraphicsContextStateSaver> >::operator=(std::nullptr_t) 16 0x1168100bc WebCore::CanvasBase::setImageBuffer(WTF::RefPtr<WebCore::ImageBuffer, WTF::RawPtrTraits<WebCore::ImageBuffer>, WTF::DefaultRefDerefTraits<WebCore::ImageBuffer> >&&) const 17 0x116882658 WebCore::HTMLCanvasElement::~HTMLCanvasElement() 18 0x11688275c WebCore::HTMLCanvasElement::~HTMLCanvasElement() 19 0x1168827c8 WebCore::HTMLCanvasElement::~HTMLCanvasElement() 20 0x11651df34 WebCore::Node::removedLastRef() 21 0x113afc6a4 WebCore::Node::deref() const 22 0x11440ce58 WTF::DefaultRefDerefTraits<WebCore::Node>::derefIfNotNull(WebCore::Node*) 23 0x11440ce10 WTF::RefPtr<WebCore::Node, WTF::RawPtrTraits<WebCore::Node>, WTF::DefaultRefDerefTraits<WebCore::Node> >::~RefPtr() 24 0x11440cb30 WTF::RefPtr<WebCore::Node, WTF::RawPtrTraits<WebCore::Node>, WTF::DefaultRefDerefTraits<WebCore::Node> >::~RefPtr() 25 0x115a9cb98 WTF::RefPtr<WebCore::Node, WTF::RawPtrTraits<WebCore::Node>, WTF::DefaultRefDerefTraits<WebCore::Node> >::operator=(WTF::RefPtr<WebCore::Node, WTF::RawPtrTraits<WebCore::Node>, WTF::DefaultRefDerefTraits<WebCore::Node> > const&) 26 0x116311fa4 WebCore::addChildNodesToDeletionQueue(WebCore::Node*&, WebCore::Node*&, WebCore::ContainerNode&) 27 0x116312038 WebCore::removeDetachedChildrenInContainer(WebCore::ContainerNode&) 28 0x1162eaff8 WebCore::ContainerNode::removeDetachedChildren() 29 0x1162eb530 WebCore::ContainerNode::~ContainerNode() 30 0x116445e50 WebCore::Element::~Element() 31 0x1165e8df4 WebCore::StyledElement::~StyledElement() LEAK: 2 WebPageProxy In release builds will end up allocating a local ItemBufferHandle which is unusual scenario for a RemoteImageBuffer. 1744692 1 sabouhallawa 2021-03-28 23:05:02 -0700 <rdar://73586187> 1744693 2 424526 sabouhallawa 2021-03-28 23:09:17 -0700 Created attachment 424526 Patch 1744923 3 424526 simon.fraser 2021-03-29 14:43:27 -0700 Comment on attachment 424526 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=424526&action=review > Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h:68 > - virtual void willAppendItemOfType(ItemType) { } > + virtual bool canAppendItemOfType(ItemType) { return false; } What is the caller supposed to do with the return value? 1744960 4 424526 sabouhallawa 2021-03-29 15:33:18 -0700 Comment on attachment 424526 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=424526&action=review >> Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h:68 >> + virtual bool canAppendItemOfType(ItemType) { return false; } > > What is the caller supposed to do with the return value? If the return value is 'false', the caller will not append the DisplayList::Item to the DisplayList. The append() method in this header file bails out early if the return value is 'false' 1744962 5 ews-feeder 2021-03-29 15:38:30 -0700 Committed r275185: <https://commits.webkit.org/r275185> All reviewed patches have been landed. Closing bug and clearing flags on attachment 424526. 424526 2021-03-28 23:09:17 -0700 2021-03-29 15:38:31 -0700 Patch bug-223864-20210328230916.patch text/plain 5727 sabouhallawa U3VidmVyc2lvbiBSZXZpc2lvbjogMjc1MTU3CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggMmJlOTY0ODEwMGUyMDI3 YTIyZDk3YWMzMzhmZjZjODUwYzQwNGM0Ni4uMjI0YzkxZDg5YTQ3OTMyNDkxYTAzMWY3ZTJlYzgw NmFhMTdmMTVlNiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIyIEBACisyMDIxLTAzLTI4ICBTYWlk IEFib3UtSGFsbGF3YSAgPHNhaWRAYXBwbGUuY29tPgorCisgICAgICAgIFtHUFUgUHJvY2Vzc10g RG9uJ3QgcmVjb3JkIERpc3BsYXlMaXN0IGl0ZW1zIGlmIHRoZSBHUFUgUHJvY2VzcyBoYXMgYmVl biB0ZXJtaW5hdGVkCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNn aT9pZD0yMjM4NjQKKyAgICAgICAgPHJkYXI6Ly83MzU4NjE4Nz4KKworICAgICAgICBSZXZpZXdl ZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBDb25zdWx0IHRoZSBEaXNwbGF5TGlzdDo6 UmVjb3JkZXI6OkRlbGVnYXRlIGJlZm9yZSBhcHBlbmRpbmcgdGhlIGl0ZW0uCisgICAgICAgIElm IHRoZSBHUFUgUHJvY2VzcyB3YXMgdGVybWluYXRlZCwgZG9uJ3QgYXBwZW5kIHRoZSBpdGVtLgor CisgICAgICAgICogcGxhdGZvcm0vZ3JhcGhpY3MvZGlzcGxheWxpc3RzL0Rpc3BsYXlMaXN0UmVj b3JkZXIuY3BwOgorICAgICAgICAoV2ViQ29yZTo6RGlzcGxheUxpc3Q6OlJlY29yZGVyOjpjYW5B cHBlbmRJdGVtT2ZUeXBlKToKKyAgICAgICAgKFdlYkNvcmU6OkRpc3BsYXlMaXN0OjpSZWNvcmRl cjo6d2lsbEFwcGVuZEl0ZW1PZlR5cGUpOiBEZWxldGVkLgorICAgICAgICAqIHBsYXRmb3JtL2dy YXBoaWNzL2Rpc3BsYXlsaXN0cy9EaXNwbGF5TGlzdFJlY29yZGVyLmg6CisgICAgICAgIChXZWJD b3JlOjpEaXNwbGF5TGlzdDo6UmVjb3JkZXI6OkRlbGVnYXRlOjpjYW5BcHBlbmRJdGVtT2ZUeXBl KToKKyAgICAgICAgKFdlYkNvcmU6OkRpc3BsYXlMaXN0OjpSZWNvcmRlcjo6YXBwZW5kKToKKyAg ICAgICAgKFdlYkNvcmU6OkRpc3BsYXlMaXN0OjpSZWNvcmRlcjo6RGVsZWdhdGU6OndpbGxBcHBl bmRJdGVtT2ZUeXBlKTogRGVsZXRlZC4KKwogMjAyMS0wMy0yOCAgU2FtIFdlaW5pZyAgPHdlaW5p Z0BhcHBsZS5jb20+CiAKICAgICAgICAgUmVtb3ZlIEpTQ3VzdG9tWFBhdGhOU1Jlc29sdmVyLmgv SlNDdXN0b21YUGF0aE5TUmVzb2x2ZXIuY3BwIGZyb20gdGhlIFhjb2RlIHByb2plY3QgYXMgdGhl eSBkb24ndCBleGlzdApkaWZmIC0tZ2l0IGEvU291cmNlL1dlYktpdC9DaGFuZ2VMb2cgYi9Tb3Vy Y2UvV2ViS2l0L0NoYW5nZUxvZwppbmRleCAwMGYxZWI4NmZiOTUwZmY1NmU4YTcyNjAzOGZlMTAx M2Q1OGJkZGU2Li5iZmM4YjI4NTc4ZjExMzlkNWJmYzkxNmNiNTFjYzNiMDRhZmYyNjdjIDEwMDY0 NAotLS0gYS9Tb3VyY2UvV2ViS2l0L0NoYW5nZUxvZworKysgYi9Tb3VyY2UvV2ViS2l0L0NoYW5n ZUxvZwpAQCAtMSwzICsxLDEzIEBACisyMDIxLTAzLTI4ICBTYWlkIEFib3UtSGFsbGF3YSAgPHNh aWRAYXBwbGUuY29tPgorCisgICAgICAgIFtHUFUgUHJvY2Vzc10gRG9uJ3QgcmVjb3JkIERpc3Bs YXlMaXN0IGl0ZW1zIGlmIHRoZSBHUFUgUHJvY2VzcyBoYXMgYmVlbiB0ZXJtaW5hdGVkCisgICAg ICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yMjM4NjQKKyAgICAg ICAgPHJkYXI6Ly83MzU4NjE4Nz4KKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMh KS4KKworICAgICAgICAqIFdlYlByb2Nlc3MvR1BVL2dyYXBoaWNzL1JlbW90ZUltYWdlQnVmZmVy UHJveHkuaDoKKwogMjAyMS0wMy0yOCAgU2FpZCBBYm91LUhhbGxhd2EgIDxzYWlkQGFwcGxlLmNv bT4KIAogICAgICAgICBbR1BVIFByb2Nlc3NdIERvbid0IGV2ZXIgcmVwbGF5IERpc3BsYXlMaXN0 IGl0ZW1zIG9mIGEgUmVtb3RlSW1hZ2VCdWZmZXIgaW4gV2ViUHJvY2VzcwpkaWZmIC0tZ2l0IGEv U291cmNlL1dlYkNvcmUvcGxhdGZvcm0vZ3JhcGhpY3MvZGlzcGxheWxpc3RzL0Rpc3BsYXlMaXN0 UmVjb3JkZXIuY3BwIGIvU291cmNlL1dlYkNvcmUvcGxhdGZvcm0vZ3JhcGhpY3MvZGlzcGxheWxp c3RzL0Rpc3BsYXlMaXN0UmVjb3JkZXIuY3BwCmluZGV4IDgzN2YwZTkwZTI3ZjU5OGMwY2I3ZTkx MzY0M2UwNWI4YTAzMDA2OTMuLjFkOWIyOWY1Njc4NzdkNjAxOThjOTM0ZWZlODJiODkzOGViZmI2 NzAgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XZWJDb3JlL3BsYXRmb3JtL2dyYXBoaWNzL2Rpc3BsYXls aXN0cy9EaXNwbGF5TGlzdFJlY29yZGVyLmNwcAorKysgYi9Tb3VyY2UvV2ViQ29yZS9wbGF0Zm9y bS9ncmFwaGljcy9kaXNwbGF5bGlzdHMvRGlzcGxheUxpc3RSZWNvcmRlci5jcHAKQEAgLTEyMSwx MCArMTIxLDEwIEBAIHZvaWQgUmVjb3JkZXI6OmFwcGVuZFN0YXRlQ2hhbmdlSXRlbShjb25zdCBH cmFwaGljc0NvbnRleHRTdGF0ZUNoYW5nZSYgY2hhbmdlcywKICAgICAgICAgYXBwZW5kPFNldElu bGluZUZpbGxHcmFkaWVudD4oKmNoYW5nZXMubV9zdGF0ZS5maWxsR3JhZGllbnQsIGNoYW5nZXMu bV9zdGF0ZS5maWxsR3JhZGllbnRTcGFjZVRyYW5zZm9ybSk7CiB9CiAKLXZvaWQgUmVjb3JkZXI6 OndpbGxBcHBlbmRJdGVtT2ZUeXBlKEl0ZW1UeXBlIHR5cGUpCitib29sIFJlY29yZGVyOjpjYW5B cHBlbmRJdGVtT2ZUeXBlKEl0ZW1UeXBlIHR5cGUpCiB7Ci0gICAgaWYgKG1fZGVsZWdhdGUpCi0g ICAgICAgIG1fZGVsZWdhdGUtPndpbGxBcHBlbmRJdGVtT2ZUeXBlKHR5cGUpOworICAgIGlmICht X2RlbGVnYXRlICYmICFtX2RlbGVnYXRlLT5jYW5BcHBlbmRJdGVtT2ZUeXBlKHR5cGUpKQorICAg ICAgICByZXR1cm4gZmFsc2U7CiAKICAgICBpZiAoaXNEcmF3aW5nSXRlbSh0eXBlKQogI2lmIFVT RShDRykKQEAgLTE0MSw2ICsxNDEsOCBAQCB2b2lkIFJlY29yZGVyOjp3aWxsQXBwZW5kSXRlbU9m VHlwZShJdGVtVHlwZSB0eXBlKQogICAgICAgICB9CiAgICAgICAgIGN1cnJlbnRTdGF0ZSgpLndh c1VzZWRGb3JEcmF3aW5nID0gdHJ1ZTsKICAgICB9CisKKyAgICByZXR1cm4gdHJ1ZTsKIH0KIAog dm9pZCBSZWNvcmRlcjo6dXBkYXRlU3RhdGUoY29uc3QgR3JhcGhpY3NDb250ZXh0U3RhdGUmIHN0 YXRlLCBHcmFwaGljc0NvbnRleHRTdGF0ZTo6U3RhdGVDaGFuZ2VGbGFncyBmbGFncykKZGlmZiAt LWdpdCBhL1NvdXJjZS9XZWJDb3JlL3BsYXRmb3JtL2dyYXBoaWNzL2Rpc3BsYXlsaXN0cy9EaXNw bGF5TGlzdFJlY29yZGVyLmggYi9Tb3VyY2UvV2ViQ29yZS9wbGF0Zm9ybS9ncmFwaGljcy9kaXNw bGF5bGlzdHMvRGlzcGxheUxpc3RSZWNvcmRlci5oCmluZGV4IDBjZWM0OGQ3MTYzYTYxYzkxODgw ZTI2ZjUxNmRhYTJhMDcwOTNjYWEuLmFkMGM2YmI0NmNmMjgyYTJlOGU4NmI2YmNhMDNmMTIyMGM4 ZTBiN2EgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XZWJDb3JlL3BsYXRmb3JtL2dyYXBoaWNzL2Rpc3Bs YXlsaXN0cy9EaXNwbGF5TGlzdFJlY29yZGVyLmgKKysrIGIvU291cmNlL1dlYkNvcmUvcGxhdGZv cm0vZ3JhcGhpY3MvZGlzcGxheWxpc3RzL0Rpc3BsYXlMaXN0UmVjb3JkZXIuaApAQCAtNjUsNyAr NjUsNyBAQCBwdWJsaWM6CiAgICAgY2xhc3MgRGVsZWdhdGUgewogICAgIHB1YmxpYzoKICAgICAg ICAgdmlydHVhbCB+RGVsZWdhdGUoKSB7IH0KLSAgICAgICAgdmlydHVhbCB2b2lkIHdpbGxBcHBl bmRJdGVtT2ZUeXBlKEl0ZW1UeXBlKSB7IH0KKyAgICAgICAgdmlydHVhbCBib29sIGNhbkFwcGVu ZEl0ZW1PZlR5cGUoSXRlbVR5cGUpIHsgcmV0dXJuIGZhbHNlOyB9CiAgICAgICAgIHZpcnR1YWwg dm9pZCBjYWNoZU5hdGl2ZUltYWdlKE5hdGl2ZUltYWdlJikgeyB9CiAgICAgICAgIHZpcnR1YWwg Ym9vbCBpc0NhY2hlZEltYWdlQnVmZmVyKGNvbnN0IEltYWdlQnVmZmVyJikgY29uc3QgeyByZXR1 cm4gZmFsc2U7IH0KICAgICAgICAgdmlydHVhbCB2b2lkIGNhY2hlRm9udChGb250JikgeyB9CkBA IC0xNTUsNyArMTU1LDkgQEAgcHJpdmF0ZToKICAgICB0ZW1wbGF0ZTx0eXBlbmFtZSBULCBjbGFz cy4uLiBBcmdzPgogICAgIHZvaWQgYXBwZW5kKEFyZ3MmJi4uLiBhcmdzKQogICAgIHsKLSAgICAg ICAgd2lsbEFwcGVuZEl0ZW1PZlR5cGUoVDo6aXRlbVR5cGUpOworICAgICAgICBpZiAoVU5MSUtF TFkoIWNhbkFwcGVuZEl0ZW1PZlR5cGUoVDo6aXRlbVR5cGUpKSkKKyAgICAgICAgICAgIHJldHVy bjsKKwogICAgICAgICBtX2Rpc3BsYXlMaXN0LmFwcGVuZDxUPihzdGQ6OmZvcndhcmQ8QXJncz4o YXJncykuLi4pOwogCiAgICAgICAgIGlmIGNvbnN0ZXhwciAoVDo6aXNEcmF3aW5nSXRlbSkgewpA QCAtMTcyLDcgKzE3NCw3IEBAIHByaXZhdGU6CiAgICAgICAgIH0KICAgICB9CiAKLSAgICBXRUJD T1JFX0VYUE9SVCB2b2lkIHdpbGxBcHBlbmRJdGVtT2ZUeXBlKEl0ZW1UeXBlKTsKKyAgICBXRUJD T1JFX0VYUE9SVCBib29sIGNhbkFwcGVuZEl0ZW1PZlR5cGUoSXRlbVR5cGUpOwogCiAgICAgdm9p ZCBjYWNoZU5hdGl2ZUltYWdlKE5hdGl2ZUltYWdlJik7CiAKZGlmZiAtLWdpdCBhL1NvdXJjZS9X ZWJLaXQvV2ViUHJvY2Vzcy9HUFUvZ3JhcGhpY3MvUmVtb3RlSW1hZ2VCdWZmZXJQcm94eS5oIGIv U291cmNlL1dlYktpdC9XZWJQcm9jZXNzL0dQVS9ncmFwaGljcy9SZW1vdGVJbWFnZUJ1ZmZlclBy b3h5LmgKaW5kZXggZjVhNjAyMTRlZDgzNDIwNzhmNjdkMDEyNDJjMDVhYWI3OWU0MDRiNy4uNjVh MTgzMzI3M2I2ZTdmYTJkNjg2MGZmMDlkNmI1YTlhNWMwNWRhMCAxMDA2NDQKLS0tIGEvU291cmNl L1dlYktpdC9XZWJQcm9jZXNzL0dQVS9ncmFwaGljcy9SZW1vdGVJbWFnZUJ1ZmZlclByb3h5LmgK KysrIGIvU291cmNlL1dlYktpdC9XZWJQcm9jZXNzL0dQVS9ncmFwaGljcy9SZW1vdGVJbWFnZUJ1 ZmZlclByb3h5LmgKQEAgLTI3NywxMCArMjc3LDEyIEBAIHByb3RlY3RlZDoKICAgICAgICAgbV9k cmF3aW5nQ29udGV4dC5kaXNwbGF5TGlzdCgpLmNsZWFyKCk7CiAgICAgfQogCi0gICAgdm9pZCB3 aWxsQXBwZW5kSXRlbU9mVHlwZShXZWJDb3JlOjpEaXNwbGF5TGlzdDo6SXRlbVR5cGUpIG92ZXJy aWRlCisgICAgYm9vbCBjYW5BcHBlbmRJdGVtT2ZUeXBlKFdlYkNvcmU6OkRpc3BsYXlMaXN0OjpJ dGVtVHlwZSkgb3ZlcnJpZGUKICAgICB7Ci0gICAgICAgIGlmIChMSUtFTFkobV9yZW1vdGVSZW5k ZXJpbmdCYWNrZW5kUHJveHkpKQotICAgICAgICAgICAgbV9yZW1vdGVSZW5kZXJpbmdCYWNrZW5k UHJveHktPndpbGxBcHBlbmRJdGVtKG1fcmVuZGVyaW5nUmVzb3VyY2VJZGVudGlmaWVyKTsKKyAg ICAgICAgaWYgKFVOTElLRUxZKCFtX3JlbW90ZVJlbmRlcmluZ0JhY2tlbmRQcm94eSkpCisgICAg ICAgICAgICByZXR1cm4gZmFsc2U7CisgICAgICAgIG1fcmVtb3RlUmVuZGVyaW5nQmFja2VuZFBy b3h5LT53aWxsQXBwZW5kSXRlbShtX3JlbmRlcmluZ1Jlc291cmNlSWRlbnRpZmllcik7CisgICAg ICAgIHJldHVybiB0cnVlOwogICAgIH0KIAogICAgIHZvaWQgZGlkQXBwZW5kRGF0YShjb25zdCBX ZWJDb3JlOjpEaXNwbGF5TGlzdDo6SXRlbUJ1ZmZlckhhbmRsZSYgaGFuZGxlLCBzaXplX3QgbnVt YmVyT2ZCeXRlcywgV2ViQ29yZTo6RGlzcGxheUxpc3Q6OkRpZENoYW5nZUl0ZW1CdWZmZXIgZGlk Q2hhbmdlSXRlbUJ1ZmZlcikgb3ZlcnJpZGUK