I did some further digging and this isn't a WebRTC-specific issue though it tends to crash WebRTC code more often than other code.
See this for another similar crash in code we don't control (and which might also be using select() and thus triggering the safety check): https://crash-stats.mozilla.com/report/index/d347998e-6c60-4761-aece- e7e8c0191023 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1849615 Title: WebRTC-related crashes Status in firefox package in Ubuntu: New Bug description: In Mozilla we've detected a spike of crashes in the Ubuntu-packaged version of Firefox 69.0.x. All the crashes are happening in the WebRTC code and specifically libc's FD_SET, FD_CLR and FD_ISSET range- checking safety is causing an abort. Is it possible that Firefox is being built with a FD_SETSIZE value that's different from what's used in libc? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1849615/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
