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cromite/build/patches/Partition-Blink-memory-cache.patch
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From: uazo <uazo@users.noreply.github.com>
Date: Wed, 13 Jul 2022 14:51:09 +0000
Subject: Partition Blink memory cache
Blink's in-memory cache is not partitioned (see also: http://crbug.com/1127971)
This patch partitions it by the top-level site.
This mitigation is effective in case the rendering process is re-used, because
on such case the cache would be re-used as well and transfer information between
different contexts.
See also:
* https://github.com/bromite/bromite/pull/2173
Original License: GPL-2.0-or-later - https://spdx.org/licenses/GPL-2.0-or-later.html
License: GPL-3.0-only - https://spdx.org/licenses/GPL-3.0-only.html
---
.../core/html/parser/html_srcset_parser.cc | 2 +-
.../core/inspector/inspector_network_agent.cc | 2 +-
.../core/inspector/inspector_page_agent.cc | 4 ++--
.../renderer/core/loader/image_loader.cc | 3 ++-
.../platform/loader/fetch/memory_cache.cc | 8 ++------
.../platform/loader/fetch/memory_cache.h | 5 ++---
.../platform/loader/fetch/resource_fetcher.cc | 19 +++++++++++++------
.../platform/loader/fetch/resource_fetcher.h | 3 ++-
8 files changed, 25 insertions(+), 21 deletions(-)
diff --git a/third_party/blink/renderer/core/html/parser/html_srcset_parser.cc b/third_party/blink/renderer/core/html/parser/html_srcset_parser.cc
--- a/third_party/blink/renderer/core/html/parser/html_srcset_parser.cc
+++ b/third_party/blink/renderer/core/html/parser/html_srcset_parser.cc
@@ -418,7 +418,7 @@ static unsigned AvoidDownloadIfHigherDensityResourceIsInCache(
KURL url = document->CompleteURL(
StripLeadingAndTrailingHTMLSpaces(image_candidates[i]->Url()));
auto* resource = MemoryCache::Get()->ResourceForURL(
- url, document->Fetcher()->GetCacheIdentifier(url));
+ url, document->Fetcher()->GetCacheIdentifier(url, document->TopFrameOrigin()));
if ((resource && resource->IsLoaded()) || url.ProtocolIsData()) {
return i;
}
diff --git a/third_party/blink/renderer/core/inspector/inspector_network_agent.cc b/third_party/blink/renderer/core/inspector/inspector_network_agent.cc
--- a/third_party/blink/renderer/core/inspector/inspector_network_agent.cc
+++ b/third_party/blink/renderer/core/inspector/inspector_network_agent.cc
@@ -2440,7 +2440,7 @@ bool InspectorNetworkAgent::FetchResourceContent(Document* document,
Resource* cached_resource = document->Fetcher()->CachedResource(url);
if (!cached_resource) {
cached_resource = MemoryCache::Get()->ResourceForURL(
- url, document->Fetcher()->GetCacheIdentifier(url));
+ url, document->Fetcher()->GetCacheIdentifier(url, document->TopFrameOrigin()));
}
if (cached_resource && InspectorPageAgent::CachedResourceContent(
cached_resource, content, base64_encoded)) {
diff --git a/third_party/blink/renderer/core/inspector/inspector_page_agent.cc b/third_party/blink/renderer/core/inspector/inspector_page_agent.cc
--- a/third_party/blink/renderer/core/inspector/inspector_page_agent.cc
+++ b/third_party/blink/renderer/core/inspector/inspector_page_agent.cc
@@ -174,9 +174,9 @@ Resource* CachedResource(LocalFrame* frame,
if (!document)
return nullptr;
Resource* cached_resource = document->Fetcher()->CachedResource(url);
- if (!cached_resource) {
+ if (!cached_resource && document->TopFrameOrigin()) {
cached_resource = MemoryCache::Get()->ResourceForURL(
- url, document->Fetcher()->GetCacheIdentifier(url));
+ url, document->Fetcher()->GetCacheIdentifier(url, document->TopFrameOrigin()));
}
if (!cached_resource)
cached_resource = loader->ResourceForURL(url);
diff --git a/third_party/blink/renderer/core/loader/image_loader.cc b/third_party/blink/renderer/core/loader/image_loader.cc
--- a/third_party/blink/renderer/core/loader/image_loader.cc
+++ b/third_party/blink/renderer/core/loader/image_loader.cc
@@ -710,7 +710,8 @@ bool ImageLoader::ShouldLoadImmediately(const KURL& url) const {
// content when style recalc is over and DOM mutation is allowed again.
if (!url.IsNull()) {
Resource* resource = MemoryCache::Get()->ResourceForURL(
- url, element_->GetDocument().Fetcher()->GetCacheIdentifier(url));
+ url, element_->GetDocument().Fetcher()->GetCacheIdentifier(url,
+ element_->GetDocument().TopFrameOrigin()));
if (resource && !resource->ErrorOccurred() &&
CanReuseFromListOfAvailableImages(
diff --git a/third_party/blink/renderer/platform/loader/fetch/memory_cache.cc b/third_party/blink/renderer/platform/loader/fetch/memory_cache.cc
--- a/third_party/blink/renderer/platform/loader/fetch/memory_cache.cc
+++ b/third_party/blink/renderer/platform/loader/fetch/memory_cache.cc
@@ -207,7 +207,7 @@ void MemoryCache::RemoveInternal(ResourceMap* resource_map,
}
bool MemoryCache::Contains(const Resource* resource) const {
- if (!resource || resource->Url().IsEmpty())
+ if (!resource || resource->Url().IsEmpty() || resource->CacheIdentifier().empty())
return false;
const auto resource_maps_it =
@@ -223,13 +223,9 @@ bool MemoryCache::Contains(const Resource* resource) const {
return resource == resources_it->value->GetResource();
}
-Resource* MemoryCache::ResourceForURLForTesting(
- const KURL& resource_url) const {
- return ResourceForURL(resource_url, DefaultCacheIdentifier());
-}
-
Resource* MemoryCache::ResourceForURL(const KURL& resource_url,
const String& cache_identifier) const {
+ if (cache_identifier.empty()) return nullptr;
DCHECK(WTF::IsMainThread());
if (!resource_url.IsValid() || resource_url.IsNull())
return nullptr;
diff --git a/third_party/blink/renderer/platform/loader/fetch/memory_cache.h b/third_party/blink/renderer/platform/loader/fetch/memory_cache.h
--- a/third_party/blink/renderer/platform/loader/fetch/memory_cache.h
+++ b/third_party/blink/renderer/platform/loader/fetch/memory_cache.h
@@ -122,10 +122,7 @@ class PLATFORM_EXPORT MemoryCache final : public GarbageCollected<MemoryCache>,
// Do not use this method outside test purposes.
// A resourfe URL is not enough to do a correct MemoryCache lookup, and
// relying on the method would likely yield wrong results.
- Resource* ResourceForURLForTesting(const KURL&) const;
-
Resource* ResourceForURL(const KURL&, const String& cache_identifier) const;
- HeapVector<Member<Resource>> ResourcesForURL(const KURL&) const;
void Add(Resource*);
void Remove(Resource*);
@@ -177,6 +174,8 @@ class PLATFORM_EXPORT MemoryCache final : public GarbageCollected<MemoryCache>,
base::MemoryPressureListener::MemoryPressureLevel) override;
private:
+ HeapVector<Member<Resource>> ResourcesForURL(const KURL&) const;
+
enum PruneStrategy {
// Automatically decide how much to prune.
kAutomaticPrune,
diff --git a/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.cc b/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.cc
--- a/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.cc
+++ b/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.cc
@@ -973,7 +973,8 @@ Resource* ResourceFetcher::CreateResourceForStaticData(
if (!archive_ && factory.GetType() == ResourceType::kRaw)
return nullptr;
- const String cache_identifier = GetCacheIdentifier(url);
+ const String cache_identifier = GetCacheIdentifier(url,
+ params.GetResourceRequest().TopFrameOrigin());
// Most off-main-thread resource fetches use Resource::kRaw and don't reach
// this point, but off-main-thread module fetches might.
if (IsMainThread()) {
@@ -1414,7 +1415,9 @@ Resource* ResourceFetcher::RequestResource(FetchParameters& params,
resource = nullptr;
} else {
resource = MemoryCache::Get()->ResourceForURL(
- params.Url(), GetCacheIdentifier(params.Url()));
+ params.Url(),
+ GetCacheIdentifier(params.Url(),
+ params.GetResourceRequest().TopFrameOrigin()));
}
if (resource) {
policy = DetermineRevalidationPolicy(resource_type, params, *resource,
@@ -1712,7 +1715,8 @@ Resource* ResourceFetcher::CreateResourceForLoading(
const FetchParameters& params,
const ResourceFactory& factory) {
const String cache_identifier =
- GetCacheIdentifier(params.GetResourceRequest().Url());
+ GetCacheIdentifier(params.GetResourceRequest().Url(),
+ params.GetResourceRequest().TopFrameOrigin());
if (!base::FeatureList::IsEnabled(
blink::features::kScopeMemoryCachePerContext)) {
DCHECK(!IsMainThread() || params.IsStaleRevalidation() ||
@@ -2784,10 +2788,13 @@ void ResourceFetcher::UpdateAllImageResourcePriorities() {
to_be_removed.clear();
}
-String ResourceFetcher::GetCacheIdentifier(const KURL& url) const {
+String ResourceFetcher::GetCacheIdentifier(const KURL& url,
+ scoped_refptr<const blink::SecurityOrigin> origin) const {
+ String origin_url = origin ? origin->ToRawString() : "";
+
if (properties_->GetControllerServiceWorkerMode() !=
mojom::ControllerServiceWorkerMode::kNoController) {
- return String::Number(properties_->ServiceWorkerId());
+ return origin_url + " " + String::Number(properties_->ServiceWorkerId());
}
// Requests that can be satisfied via `archive_` (i.e. MHTML) or
@@ -2800,7 +2807,7 @@ String ResourceFetcher::GetCacheIdentifier(const KURL& url) const {
if (bundle)
return bundle->GetCacheIdentifier();
- return MemoryCache::DefaultCacheIdentifier();
+ return origin_url;
}
std::optional<base::UnguessableToken>
diff --git a/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h b/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h
--- a/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h
+++ b/third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h
@@ -278,7 +278,8 @@ class PLATFORM_EXPORT ResourceFetcher
uint32_t inflight_keepalive_bytes);
blink::mojom::ControllerServiceWorkerMode IsControlledByServiceWorker() const;
- String GetCacheIdentifier(const KURL& url) const;
+ String GetCacheIdentifier(const KURL& url,
+ scoped_refptr<const blink::SecurityOrigin> cache_identifier) const;
// If `url` exists as a resource in a subresource bundle in this frame,
// returns its UnguessableToken; otherwise, returns std::nullopt.
--
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