Bug 1588248 Comment 0 Edit History

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Original comment by
on 
Reduced with m-c:
BuildID=20191010092637
SourceStamp=f20fa8068ec25d685914a5945f2c54e36c89bc65

This issue is frequently hit by fuzzers.

Assertion failure: !mProxy->mSyncLoopTarget, at src/dom/xhr/XMLHttpRequestWorker.cpp:1416

```
#0 mozilla::dom::SendRunnable::RunOnMainThread(mozilla::ErrorResult&) src/dom/xhr/XMLHttpRequestWorker.cpp:1416:3
#1 mozilla::dom::WorkerThreadProxySyncRunnable::MainThreadRun() src/dom/xhr/XMLHttpRequestWorker.cpp:1259:3
#2 mozilla::dom::WorkerMainThreadRunnable::Run() src/dom/workers/WorkerRunnable.cpp:575:20
#3 mozilla::ThrottledEventQueue::Inner::ExecuteRunnable() src/xpcom/threads/ThrottledEventQueue.cpp:252:22
#4 mozilla::ThrottledEventQueue::Inner::Executor::Run() src/xpcom/threads/ThrottledEventQueue.cpp:80:15
#5 nsThread::ProcessNextEvent(bool, bool*) src/xpcom/threads/nsThread.cpp:1225:14
#6 NS_ProcessNextEvent(nsIThread*, bool) src/xpcom/threads/nsThreadUtils.cpp:486:10
#7 mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:88:21
#8 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#9 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#10 nsBaseAppShell::Run() src/widget/nsBaseAppShell.cpp:137:27
#11 XRE_RunAppShell() src/toolkit/xre/nsEmbedFunctions.cpp:934:20
#12 mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:238:9
#13 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#14 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#15 XRE_InitChildProcess(int, char**, XREChildData const*) src/toolkit/xre/nsEmbedFunctions.cpp:769:34
#16 content_process_main(mozilla::Bootstrap*, int, char**) src/browser/app/../../ipc/contentproc/plugin-container.cpp:56:28
#17 main src/browser/app/nsBrowserApp.cpp:272:18
```
Revision 1 by
on 
Reduced with m-c:
BuildID=20191010092637
SourceStamp=f20fa8068ec25d685914a5945f2c54e36c89bc65

This issue is frequently hit by fuzzers.

The test case must be served via a web server to trigger the issue.

Assertion failure: !mProxy->mSyncLoopTarget, at src/dom/xhr/XMLHttpRequestWorker.cpp:1416

```
#0 mozilla::dom::SendRunnable::RunOnMainThread(mozilla::ErrorResult&) src/dom/xhr/XMLHttpRequestWorker.cpp:1416:3
#1 mozilla::dom::WorkerThreadProxySyncRunnable::MainThreadRun() src/dom/xhr/XMLHttpRequestWorker.cpp:1259:3
#2 mozilla::dom::WorkerMainThreadRunnable::Run() src/dom/workers/WorkerRunnable.cpp:575:20
#3 mozilla::ThrottledEventQueue::Inner::ExecuteRunnable() src/xpcom/threads/ThrottledEventQueue.cpp:252:22
#4 mozilla::ThrottledEventQueue::Inner::Executor::Run() src/xpcom/threads/ThrottledEventQueue.cpp:80:15
#5 nsThread::ProcessNextEvent(bool, bool*) src/xpcom/threads/nsThread.cpp:1225:14
#6 NS_ProcessNextEvent(nsIThread*, bool) src/xpcom/threads/nsThreadUtils.cpp:486:10
#7 mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:88:21
#8 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#9 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#10 nsBaseAppShell::Run() src/widget/nsBaseAppShell.cpp:137:27
#11 XRE_RunAppShell() src/toolkit/xre/nsEmbedFunctions.cpp:934:20
#12 mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:238:9
#13 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#14 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#15 XRE_InitChildProcess(int, char**, XREChildData const*) src/toolkit/xre/nsEmbedFunctions.cpp:769:34
#16 content_process_main(mozilla::Bootstrap*, int, char**) src/browser/app/../../ipc/contentproc/plugin-container.cpp:56:28
#17 main src/browser/app/nsBrowserApp.cpp:272:18
```
Revision 2 by
on 
Reduced with m-c (build with --enable-debug):
BuildID=20191010092637
SourceStamp=f20fa8068ec25d685914a5945f2c54e36c89bc65

This issue is frequently hit by fuzzers.

The test case must be served via a web server to trigger the issue.

Assertion failure: !mProxy->mSyncLoopTarget, at src/dom/xhr/XMLHttpRequestWorker.cpp:1416

```
#0 mozilla::dom::SendRunnable::RunOnMainThread(mozilla::ErrorResult&) src/dom/xhr/XMLHttpRequestWorker.cpp:1416:3
#1 mozilla::dom::WorkerThreadProxySyncRunnable::MainThreadRun() src/dom/xhr/XMLHttpRequestWorker.cpp:1259:3
#2 mozilla::dom::WorkerMainThreadRunnable::Run() src/dom/workers/WorkerRunnable.cpp:575:20
#3 mozilla::ThrottledEventQueue::Inner::ExecuteRunnable() src/xpcom/threads/ThrottledEventQueue.cpp:252:22
#4 mozilla::ThrottledEventQueue::Inner::Executor::Run() src/xpcom/threads/ThrottledEventQueue.cpp:80:15
#5 nsThread::ProcessNextEvent(bool, bool*) src/xpcom/threads/nsThread.cpp:1225:14
#6 NS_ProcessNextEvent(nsIThread*, bool) src/xpcom/threads/nsThreadUtils.cpp:486:10
#7 mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:88:21
#8 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#9 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#10 nsBaseAppShell::Run() src/widget/nsBaseAppShell.cpp:137:27
#11 XRE_RunAppShell() src/toolkit/xre/nsEmbedFunctions.cpp:934:20
#12 mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:238:9
#13 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#14 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#15 XRE_InitChildProcess(int, char**, XREChildData const*) src/toolkit/xre/nsEmbedFunctions.cpp:769:34
#16 content_process_main(mozilla::Bootstrap*, int, char**) src/browser/app/../../ipc/contentproc/plugin-container.cpp:56:28
#17 main src/browser/app/nsBrowserApp.cpp:272:18
```

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