[Webkit-unassigned] [Bug 171532] New: Leaks bot always reports "WebKit Malloc Memory Pressure Handler" dispatch_queue/source as leaking
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon May 1 19:02:46 PDT 2017
https://bugs.webkit.org/show_bug.cgi?id=171532
Bug ID: 171532
Summary: Leaks bot always reports "WebKit Malloc Memory
Pressure Handler" dispatch_queue/source as leaking
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: joepeck at webkit.org
CC: ggaren at apple.com, msaboff at apple.com
Summary:
Leaks bot always reports "WebKit Malloc Memory Pressure Handler" as leaking
This seems like a valid report of a leak, however logically it doesn't appear to be a leak. We should be able to silence the report by saving the source into a member variable or static variable. For example, WebKit::WebMemoryPressureHandler uses a member variable.
Steps to Reproduce:
1. run-webkit-tests --leaks <one-test>
=> Leaks
Leaks:
Leak: 0x7feb425074c0 size=128 zone: DefaultMallocZone_0x10dff3000 OS_dispatch_queue ObjC libdispatch.dylib "WebKit Malloc Memory Pressure Handler" (from JavaScriptCore)
Call stack: [thread 0x7fffb0c013c0]:
| start
| main main.mm:66
| WTR::TestController::TestController(int, char const**) TestController.cpp:123
| WTR::TestController::TestController(int, char const**) TestController.cpp:117
| WTR::WebNotificationProvider::WebNotificationProvider() WebNotificationProvider.cpp:65
| WTR::WebNotificationProvider::WebNotificationProvider() WebNotificationProvider.cpp:63
| WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::HashMap() HashMap.h:76
| WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::HashMap() HashMap.h:76
| WTF::HashTable<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > >, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::KeyValuePairTraits, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> > >::HashTable() HashTable.h:559
| WTF::HashTable<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > >, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::KeyValuePairTraits, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> > >::HashTable() HashTable.h:553
| WTF::Lock::operator new(unsigned long) Lock.h:135
| WTF::fastMalloc(unsigned long) FastMalloc.cpp:256
| bmalloc::api::malloc(unsigned long) bmalloc.h:43
| bmalloc::Cache::allocate(unsigned long) Cache.h:79
| bmalloc::Cache::allocateSlowCaseNullCache(unsigned long) Cache.cpp:66
| bmalloc::PerThread<bmalloc::Cache>::getSlowCase() PerThread.h:141
| bmalloc::Cache::Cache() Cache.cpp:57
| bmalloc::Cache::Cache() PerProcess.h:84
| bmalloc::PerProcess<bmalloc::Heap>::getSlowCase() PerProcess.h:93
| bmalloc::Heap::Heap(std::__1::lock_guard<bmalloc::StaticMutex>&) Heap.cpp:63
| bmalloc::Heap::Heap(std::__1::lock_guard<bmalloc::StaticMutex>&) Heap.cpp:56
| _dispatch_queue_create_with_target
| _os_object_alloc_realized
| class_createInstance
| calloc
Leak: 0x7feb42507540 size=176 zone: DefaultMallocZone_0x10dff3000 OS_dispatch_source ObjC libdispatch.dylib
0xb0bd0348 0x00007fff 0x00000001 0x00000000 H...............
0x89abcdef 0xffffffff 0x425074c0 0x00007feb .........tPB....
0x00000000 0x00000000 0x00000000 0x00000000 ................
0x00000000 0x00000000 0x00000000 0x000fffe0 ................
0x00000044 0x00000000 0xa7c86856 0x00007fff D.......Vh......
0xffffffff 0xffffffff 0x00000000 0x00000000 ................
0x00000000 0x00000000 0x00000000 0x00000000 ................
0x00012000 0x00000000 0x00000000 0x0000002c . ..........,...
...
Call stack: [thread 0x7fffb0c013c0]:
| start
| main main.mm:66
| WTR::TestController::TestController(int, char const**) TestController.cpp:123
| WTR::TestController::TestController(int, char const**) TestController.cpp:117
| WTR::WebNotificationProvider::WebNotificationProvider() WebNotificationProvider.cpp:65
| WTR::WebNotificationProvider::WebNotificationProvider() WebNotificationProvider.cpp:63
| WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::HashMap() HashMap.h:76
| WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::HashMap() HashMap.h:76
| WTF::HashTable<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > >, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::KeyValuePairTraits, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> > >::HashTable() HashTable.h:559
| WTF::HashTable<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > >, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashMap<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*>, WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> >, WTF::PtrHash<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> >, WTF::HashTraits<WTF::HashSet<unsigned long long, WTF::IntHash<unsigned long long>, WTF::HashTraits<unsigned long long> > > >::KeyValuePairTraits, WTF::HashTraits<WebKit::WKRetainPtr<OpaqueWKNotificationManager const*> > >::HashTable() HashTable.h:553
| WTF::Lock::operator new(unsigned long) Lock.h:135
| WTF::fastMalloc(unsigned long) FastMalloc.cpp:256
| bmalloc::api::malloc(unsigned long) bmalloc.h:43
| bmalloc::Cache::allocate(unsigned long) Cache.h:79
| bmalloc::Cache::allocateSlowCaseNullCache(unsigned long) Cache.cpp:66
| bmalloc::PerThread<bmalloc::Cache>::getSlowCase() PerThread.h:141
| bmalloc::Cache::Cache() Cache.cpp:57
| bmalloc::Cache::Cache() PerProcess.h:84
| bmalloc::PerProcess<bmalloc::Heap>::getSlowCase() PerProcess.h:93
| bmalloc::Heap::Heap(std::__1::lock_guard<bmalloc::StaticMutex>&) Heap.cpp:63
| bmalloc::Heap::Heap(std::__1::lock_guard<bmalloc::StaticMutex>&) Heap.cpp:57
| dispatch_source_create
| _os_object_alloc_realized
| class_createInstance
| calloc
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