RESOLVED CONFIGURATION CHANGED234048
[macOS 11.* M1+Safari 14.*] WebRTC client (WebEx App Client) crash always if receive 3 or more videos 
https://bugs.webkit.org/show_bug.cgi?id=234048
Summary [macOS 11.* M1+Safari 14.*] WebRTC client (WebEx App Client) crash always if ...
Cindy Zhang
Reported 2021-12-08 17:58:09 PST
Created attachment 446468 [details] MAC M1 Safari 14 client crash WebEx App meeting client launch in MAC M1 Safari 14 browser, if receive 3 or more video, after a while, always happen crash (meeting is started). This issue happen in multiple MAC M1 client Mac OS 11.5 or 11.6 Safari 14.0 or 14.1 By the way, in Mac OS Intel device, there is no this issue.
Attachments
MAC M1 Safari 14 client crash (3.74 MB, image/png)
2021-12-08 17:58 PST, Cindy Zhang 		no flags
Details
JoinMeetingSteps (27.61 MB, video/quicktime)
2021-12-09 22:30 PST, Cindy Zhang 		no flags
Details
MeetingCrashUI (591.09 KB, image/jpeg)
2021-12-09 22:30 PST, Cindy Zhang 		no flags
Details
Crash log (180.51 KB, text/plain)
2021-12-09 22:32 PST, Cindy Zhang 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Cindy Zhang
Comment 1 2021-12-08 18:00:30 PST
Clean Safari's history or restart MAC, all cannot resolve this issue
Alexey Proskuryakov
Comment 2 2021-12-09 09:40:57 PST
Safari 14 is obsolete, can you please confirm if this affects Safari 15.1 or newer? I don't quite understand the steps to reproduce, so it would help if you added detailed step by step repro. Also, could you please attach the crash log (should be visible in Console.app)?
Cindy Zhang
Comment 3 2021-12-09 22:30:03 PST
Created attachment 446662 [details] JoinMeetingSteps Thanks Alexey for your checking. No special steps to duplicate.Only need MAC M1 Safari 14 client join one meeting which have 3 users with video, then wait for some minutes, MAC M1 Safari client will crash.
Cindy Zhang
Comment 4 2021-12-09 22:30:45 PST
Created attachment 446663 [details] MeetingCrashUI
Cindy Zhang
Comment 5 2021-12-09 22:32:14 PST
Created attachment 446664 [details] Crash log
Alexey Proskuryakov
Comment 6 2021-12-10 09:32:06 PST
rdar://72146487 Thank you for the additional details. According to our data, this crash doesn't happen with Safari 15.
youenn fablet
Comment 7 2021-12-10 10:59:06 PST
I think it is worth investigating if we are not seeing the same crash in gpu process.
Cindy Zhang
Comment 8 2021-12-12 23:31:54 PST
Thanks for your checking, now I upgrade Safari to Safari 15.1, this issue does not happen.
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