[Webkit-unassigned] [Bug 185228] New: EXC_BAD_ACCESS using WebRTC and MediaStream APIs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185228

            Bug ID: 185228
           Summary: EXC_BAD_ACCESS using WebRTC and MediaStream APIs
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mroberts at twilio.com
                CC: youennf at gmail.com

Created attachment 339366

  --> https://bugs.webkit.org/attachment.cgi?id=339366&action=review

crash1.log

Twilio customers easily reproduce a crash in Safari when using our Video Quickstart project (https://github.com/twilio/video-quickstart-js). To reproduce, they configure their Twilio account to use "P2P Rooms" or "Group Rooms" with the codec restricted to H.264. Then, they start a video chat in the quickstart, for example, letting Chrome join first, then Safari. Next, when they disconnect in Safari, the crash occurs. I've included it as crash2.log. It shows an EXC_BAD_ACCESS.

Ideally, I could reproduce this issue without the quickstart. I tried to do so with test.html and by playing with the various setTimeout values. I was only able to reproduce a different EXC_BAD_ACCESS this way (by setting very short timeouts). It's included as crash1.log.

Any idea on these two EXC_BAD_ACCESS crashes?

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