Bug 165817 – REGRESSION: Crash in com.apple.WebKit:IPC::Connection::platformCanSendOutgoingMessages() const + 0

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[Ryan Haddad]

Created attachment 297035 [details]
Crash log

Crash in com.apple.WebKit:IPC::Connection::platformCanSendOutgoingMessages() const + 0

Thread 1 Crashed:: Dispatch queue: com.apple.IPC.ReceiveQueue
0   com.apple.WebKit              	0x0000000108ebc32c IPC::Connection::platformCanSendOutgoingMessages() const + 0 (ConnectionMac.mm:290)
1   ???                           	0x0000000100000000 0 + 4294967296
2   com.apple.WebKit              	0x0000000108ebc4c7 IPC::Connection::sendOutgoingMessage(std::__1::unique_ptr<IPC::Encoder, std::__1::default_delete<IPC::Encoder> >) + 393 (ConnectionMac.mm:379)
3   com.apple.WebKit              	0x0000000108eb8340 IPC::Connection::sendOutgoingMessages() + 82 (Connection.cpp:825)
4   libdispatch.dylib             	0x00007fff8770293d _dispatch_call_block_and_release + 12
5   libdispatch.dylib             	0x00007fff876f740b _dispatch_client_callout + 8
6   libdispatch.dylib             	0x00007fff876fc03b _dispatch_queue_drain + 754
7   libdispatch.dylib             	0x00007fff87702707 _dispatch_queue_invoke + 549
8   libdispatch.dylib             	0x00007fff876fad53 _dispatch_root_queue_drain + 538
9   libdispatch.dylib             	0x00007fff876fab00 _dispatch_worker_thread3 + 91
10  libsystem_pthread.dylib       	0x00007fff8c31f4de _pthread_wqthread + 1129
11  libsystem_pthread.dylib       	0x00007fff8c31d341 start_wqthread + 13

https://build.webkit.org/results/Apple%20El%20Capitan%20Release%20WK2%20(Tests)/r209759%20(11768)/results.html

[Ryan Haddad]

<rdar://problem/29626731>

[Ryan Haddad]

Application Specific Information:
Unhandled error code 1000000a, message 'WebInspectorProxy:CreateInspectorPage:'
CRASHING TEST: /xmlhttprequest/access-control-repeated-failed-preflight-crash.html

https://build.webkit.org/results/Apple%20El%20Capitan%20Release%20WK2%20(Tests)/r209881%20(11850)/http/tests/xmlhttprequest/access-control-repeated-failed-preflight-crash-crash-log.txt

[Anders Carlsson]

Created attachment 297474 [details]
Patch

[Anders Carlsson]

Committed r209995: <http://trac.webkit.org/changeset/209995>

[Darin Adler]

Comment on attachment 297474 [details]
Patch

Any way to cover this with a regression test?

[Anders Carlsson]

(In reply to comment #5)
> Comment on attachment 297474 [details]
> Patch
> 
> Any way to cover this with a regression test?

Not easily - it was timing dependent (and relied on rescheduling the message because the mach queue was full).

[Alexey Proskuryakov]

Existing regression tests were hitting this somewhat frequently (which is how we learned about the issue).