Bug 220044 – Safari tab crashes/restarts when using H264 encoding on MBP2017

• Status: RESOLVED
• Resolution: INVALID
• Component: WebRTC

[Nazar Mokrynskyi]

When using H264 encoding in WebRTC Safari tab crashes (looks like restart) after under 30 seconds.

Steps to reproduce:
1) Go to https://v3demo.mediasoup.org/?forceH264=true
2) Grant access to audio/video
3) Wait under 30 seconds
4) Tab will crash/restart on itself

System info:
Safari 14.0.2 (16610.3.7.1.9)
macOS 11.1 with latest updates available as of right now
MacBook Pro (15-inch, 2017) Model A1707 EMC 3162

Additional info: doesn't seem to happen on some of the newer models from 2018.

[Alexey Proskuryakov]

Could you please attach a crash log from ~/Library/Logs/DiagnosticReports/ ?

I can reproduce a crash on my M1 MacBook Pro, and that one is tracked as bug 219588. I hope that it's the same issue, but let's confirm with a crash log.

[Nazar Mokrynskyi]

Created attachment 416585 [details]
Safari tab H264 crash log MBP2017

[Alexey Proskuryakov]

This is a different crash signature than in bug 219588. I was able to find a 2017 MacBook Pro, and this reproduces as you described, with the same crash log.

I'm also hitting a crash using a 16" MacBook Pro, and I'm getting a different yet crash there. Hopefully, they all share the root cause, despite different signatures.

[Radar WebKit Bug Importer]

<rdar://problem/72559231>

[Nazar Mokrynskyi]

Is there any estimate when to expect this to be resolved?

It is pretty bad that preferred codec in Apple browser on Apple OS on Apple hardware crashes.

[Alexey Proskuryakov]

Could you please check if this still reproduces with macOS 11.2? I believe that it should be fixed with this release.

[Nazar Mokrynskyi]

macOS 11.2 works flawlessly, thanks!

[Alexey Proskuryakov]

Thank you for confirming! I'll mark this INVALID as this was not a WebKit issue.