157613 2016-05-11 23:39:48 -0700 Web Inspector: CRASH getting internal properties of function with no bound arguments causes 2016-05-12 00:27:57 -0700 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build All All RESOLVED FIXED InRadar P2 Normal --- 1 joepeck joepeck bburg commit-queue fpizlo graouts joepeck keith_miller mark.lam mattbaker msaboff nvasilyev saam timothy webkit-bug-importer oldest_to_newest 1192245 0 joepeck 2016-05-11 23:39:48 -0700 * SUMMARY CRASH getting internal properties of function with no bound arguments causes. * STEPS TO REPRODUCE 1. js> dir( (function(){}).bind(null) ) 2. Expand function object => CRASH * CRASH DETAILS Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000005 Exception Note: EXC_CORPSE_NOTIFY Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.JavaScriptCore 0x0000000103dc4367 JSC::JSObject::hasPropertyGeneric(JSC::ExecState*, JSC::PropertyName, JSC::PropertySlot::InternalMethodType) const + 1991 (JSObject.h:1206) 1 com.apple.JavaScriptCore 0x00000001038c2908 JSC::CommonSlowPaths::opIn(JSC::ExecState*, JSC::JSValue, JSC::JSValue) + 488 (CommonSlowPaths.h:89) 2 com.apple.JavaScriptCore 0x00000001038b9ca6 slow_path_in + 182 (JSCJSValue.h:514) 3 com.apple.JavaScriptCore 0x0000000103e981ae llint_entry + 20167 4 com.apple.JavaScriptCore 0x0000000103e93104 vmEntryToJavaScript + 299 5 com.apple.JavaScriptCore 0x0000000103d0500e JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 158 (JITCode.cpp:81) 6 com.apple.JavaScriptCore 0x0000000103c619a2 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 450 (Interpreter.cpp:1020) 7 com.apple.JavaScriptCore 0x00000001038590c7 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) + 71 (MarkedBlock.h:235) 8 com.apple.WebCore 0x0000000105022ad0 WebCore::JSMainThreadExecState::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) + 96 (JSMainThreadExecState.h:57) 9 com.apple.JavaScriptCore 0x0000000103fcf0ec Deprecated::ScriptFunctionCall::call(bool&) + 412 (ScriptFunctionCall.cpp:124) 10 com.apple.JavaScriptCore 0x0000000103bf52a2 Inspector::InjectedScriptBase::callFunctionWithEvalEnabled(Deprecated::ScriptFunctionCall&, bool&) const + 98 (InjectedScriptBase.cpp:80) 11 com.apple.JavaScriptCore 0x0000000103bf53df Inspector::InjectedScriptBase::makeCall(Deprecated::ScriptFunctionCall&, WTF::RefPtr<Inspector::InspectorValue>*) + 79 (InjectedScriptBase.cpp:99) 12 com.apple.JavaScriptCore 0x0000000103bf2d6a Inspector::InjectedScript::getInternalProperties(WTF::String&, WTF::String const&, bool, WTF::RefPtr<Inspector::Protocol::Array<Inspector::Protocol::Runtime::InternalPropertyDescriptor> >*) + 202 (RefPtr.h:71) * LLDB (lldb) f frame #4: 0x000000010cb6fca1 JavaScriptCore`Inspector::JSInjectedScriptHost::getInternalProperties(this=0x00000001277b1c20, exec=0x00007fff571ee550) + 2209 at JSInjectedScriptHost.cpp:286 283 JSArray* array = constructEmptyArray(exec, nullptr, 3); 284 array->putDirectIndex(exec, index++, constructInternalProperty(exec, "targetFunction", boundFunction->targetFunction())); 285 array->putDirectIndex(exec, index++, constructInternalProperty(exec, "boundThis", boundFunction->boundThis())); -> 286 array->putDirectIndex(exec, index++, constructInternalProperty(exec, "boundArgs", boundFunction->boundArgs())); 287 return array; 288 } 289 (lldb) p boundFunction->boundArgs() (JSC::JSArray *) $11 = 0x0000000000000000 1192246 1 joepeck 2016-05-11 23:39:56 -0700 <rdar://problem/26238754> 1192247 2 278703 joepeck 2016-05-11 23:42:23 -0700 Created attachment 278703 [PATCH] Proposed Fix 1192248 3 278704 joepeck 2016-05-11 23:43:47 -0700 Created attachment 278704 [PATCH] Proposed Fix Slightly simplified the test. 1192256 4 278704 commit-queue 2016-05-12 00:27:52 -0700 Comment on attachment 278704 [PATCH] Proposed Fix Clearing flags on attachment: 278704 Committed r200746: <http://trac.webkit.org/changeset/200746> 1192257 5 commit-queue 2016-05-12 00:27:57 -0700 All reviewed patches have been landed. Closing bug. 278703 2016-05-11 23:42:23 -0700 2016-05-11 23:43:47 -0700 [PATCH] Proposed Fix fix-bound-internal-properties.patch text/plain 4418 joepeck ZGlmZiAtLWdpdCBhL0xheW91dFRlc3RzL0NoYW5nZUxvZyBiL0xheW91dFRlc3RzL0NoYW5nZUxv ZwppbmRleCBlZjM2YzVhLi5mNWVjNDY2IDEwMDY0NAotLS0gYS9MYXlvdXRUZXN0cy9DaGFuZ2VM b2cKKysrIGIvTGF5b3V0VGVzdHMvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMTUgQEAKKzIwMTYtMDUt MTEgIEpvc2VwaCBQZWNvcmFybyAgPHBlY29yYXJvQGFwcGxlLmNvbT4KKworICAgICAgICBXZWIg SW5zcGVjdG9yOiBDUkFTSCBnZXR0aW5nIGludGVybmFsIHByb3BlcnRpZXMgb2YgZnVuY3Rpb24g d2l0aCBubyBib3VuZCBhcmd1bWVudHMgY2F1c2VzCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJr aXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xNTc2MTMKKyAgICAgICAgPHJkYXI6Ly9wcm9ibGVtLzI2 MjM4NzU0PgorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAgICAg ICogaW5zcGVjdG9yL3J1bnRpbWUvZ2V0UHJvcGVydGllcy1leHBlY3RlZC50eHQ6CisgICAgICAg ICogaW5zcGVjdG9yL3J1bnRpbWUvZ2V0UHJvcGVydGllcy5odG1sOgorICAgICAgICBJbmNsdWRl IGNvdmVyYWdlIGZvciBhIGJvdW5kIGZ1bmN0aW9uIHdpdGggbm8gYm91bmQgYXJndW1lbnRzLgor 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