[Webkit-unassigned] [Bug 209333] br_table behavior
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Mar 24 09:32:29 PDT 2020
https://bugs.webkit.org/show_bug.cgi?id=209333
Alexey Proskuryakov <ap at webkit.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fpizlo at apple.com,
| |keith_miller at apple.com,
| |webkit-bug-importer at group.a
| |pple.com, ysuzuki at apple.com
--- Comment #1 from Alexey Proskuryakov <ap at webkit.org> ---
I can reproduce this with WebKit as shipped with macOS 10.15.4. This is all that sample says, it's just looping in wasm_entry.
Call graph:
9415 Thread_2342286 DispatchQueue_1: com.apple.main-thread (serial)
+ 9415 start (in libdyld.dylib) + 1 [0x7fff6b6decc9]
+ 9415 ??? (in jsc) load address 0x10cec7000 + 0x436b [0x10cecb36b]
+ 9415 ??? (in jsc) load address 0x10cec7000 + 0x56c6 [0x10cecc6c6]
+ 9415 ??? (in jsc) load address 0x10cec7000 + 0xc64a [0x10ced364a]
+ 9415 JSC::evaluate(JSC::JSGlobalObject*, JSC::SourceCode const&, JSC::JSValue, WTF::NakedPtr<JSC::Exception>&) (in JavaScriptCore) + 270 [0x7fff3580959e]
+ 9415 JSC::Interpreter::executeProgram(JSC::SourceCode const&, JSC::JSGlobalObject*, JSC::JSObject*) (in JavaScriptCore) + 12478 [0x7fff355effee]
+ 9415 vmEntryToJavaScript (in JavaScriptCore) + 200 [0x7fff34ff82bf]
+ 9415 llint_entry (in JavaScriptCore) + 93344 [0x7fff3500f10d]
+ 9415 ??? (in <unknown binary>) [0x2ebdd2601178]
+ 9415 JSC::callWebAssemblyFunction(JSC::JSGlobalObject*, JSC::CallFrame*) (in JavaScriptCore) + 1235 [0x7fff35adf9b3]
+ 9415 vmEntryToJavaScript (in JavaScriptCore) + 200 [0x7fff34ff82bf]
+ 9415 ??? (in <unknown binary>) [0x2ebdd260170c]
+ 9415 wasm_entry (in JavaScriptCore) + 13022,12990,... [0x7fff35014322,0x7fff35014302,...]
9415 Thread_2342288: JavaScriptCore bmalloc scavenger
+ 9415 thread_start (in libsystem_pthread.dylib) + 15 [0x7fff6b8deb8b]
+ 9415 _pthread_start (in libsystem_pthread.dylib) + 148 [0x7fff6b8e3109]
+ 9415 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(bmalloc::Scavenger*), bmalloc::Scavenger*> >(void*) (in JavaScriptCore) + 39 [0x7fff35c1dec7]
+ 9415 bmalloc::Scavenger::threadEntryPoint(bmalloc::Scavenger*) (in JavaScriptCore) + 9 [0x7fff35c1b7e9]
+ 9415 bmalloc::Scavenger::threadRunLoop() (in JavaScriptCore) + 299 [0x7fff35c1bc1b]
+ 9415 void std::__1::condition_variable_any::wait<std::__1::unique_lock<bmalloc::Mutex> >(std::__1::unique_lock<bmalloc::Mutex>&) (in JavaScriptCore) + 84 [0x7fff35c17414]
+ 9415 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) (in libc++.1.dylib) + 18 [0x7fff689b2592]
+ 9415 _pthread_cond_wait (in libsystem_pthread.dylib) + 698 [0x7fff6b8e3425]
+ 9415 __psynch_cvwait (in libsystem_kernel.dylib) + 10 [0x7fff6b822882]
9415 Thread_2342289
9415 start_wqthread (in libsystem_pthread.dylib) + 15 [0x7fff6b8deb77]
9415 _pthread_wqthread (in libsystem_pthread.dylib) + 390 [0x7fff6b8dfaa1]
9415 __workq_kernreturn (in libsystem_kernel.dylib) + 10 [0x7fff6b8214ce]
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