Open Radar

 
Summary:
The Safari tab crashes often when scrolling on apple.com/watch on an iPad Pro. This is logged to the sys log:

Jan  4 10:07:49 iPad-Pro com.apple.WebKit.WebContent[1553] <Error>: CoreAnimation: failed to allocate IOSurface
Jan  4 10:07:49 iPad-Pro mediaserverd[1066] <Notice>: '' (pid = 1553) setting DiscoveryMode = DiscoveryMode_None, currentDiscoveryMode = DiscoveryMode_None
Jan  4 10:07:49 iPad-Pro mediaserverd[1066] <Notice>: '' (pid = 1553) setting DiscoveryMode = DiscoveryMode_None, currentDiscoveryMode = DiscoveryMode_None
Jan  4 10:07:49 iPad-Pro iap2d[1443] <Warning>: process com.apple.WebKit.WebContent is now running in the background
Jan  4 10:07:49 iPad-Pro iap2d[1443] <Warning>: process com.apple.WebKit.Networking is now running in the background
Jan  4 10:07:49 iPad-Pro UserEventAgent[1064] <Notice>: jetsam: kernel termination snapshot being created
Jan  4 10:07:49 iPad-Pro iap2d[1443] <Warning>: process com.apple.WebKit.WebContent is now terminated
Jan  4 10:07:49 iPad-Pro iap2d[1443] <Warning>: process com.apple.WebKit.WebContent is now running the foreground
Jan  4 10:07:49 iPad-Pro iap2d[1443] <Warning>: process com.apple.WebKit.Networking is now running the foreground
Jan  4 10:07:49 iPad-Pro ReportCrash[1562] <Warning>: saved type '298' report (3 of max 25) as /var/mobile/Library/Logs/CrashReporter/JetsamEvent-2016-01-04-100749.ips
Jan  4 10:07:49 iPad-Pro SpringBoard[1095] <Warning>: [MPUSystemMediaControls] Updating supported commands for now playing application.
Jan  4 10:07:49 iPad-Pro SpringBoard[1095] <Warning>: [MPUSystemMediaControls] Updating supported commands for now playing application.
Jan  4 10:07:49 iPad-Pro SpringBoard[1095] <Warning>: [MPUSystemMediaControls] Updating supported commands for now playing application.
Jan  4 10:07:49 iPad-Pro SpringBoard[1095] <Warning>: [MPUSystemMediaControls] Updating supported commands for now playing application.
Jan  4 10:07:49 iPad-Pro SpringBoard[1095] <Warning>: Unable to get short BSD proc info for 1294: No such process
Jan  4 10:07:49 iPad-Pro mediaserverd[1066] <Notice>: 'FigPlayer - 1072' (pid = 1072) setting DiscoveryMode = DiscoveryMode_None, currentDiscoveryMode = DiscoveryMode_None
Jan  4 10:07:51 iPad-Pro SpringBoard[1095] <Warning>: [MPUSystemMediaControls] Updating supported commands for now playing application.
Jan  4 10:07:51 iPad-Pro SpringBoard[1095] <Warning>: [MPUSystemMediaControls] Updating supported commands for now playing application.
Jan  4 10:07:51 iPad-Pro diagnosticd[1124] <Error>: unable to find offset 0x82cab9a4 in shared cache for arch 'arm64'
Jan  4 10:07:51 iPad-Pro ReportCrash[1564] <Notice>: platform_thread_get_unique_id matched 929946
Jan  4 10:07:51 iPad-Pro ReportCrash[1564] <Notice>: Formulating report for process[1563] com.apple.WebKit.WebContent
Jan  4 10:07:51 iPad-Pro ReportCrash[1564] <Warning>: report not saved because it is non-actionable
Jan  4 10:07:51 iPad-Pro com.apple.WebKit.WebContent[1563] <Error>: CoreAnimation: failed to allocate IOSurface


Steps to Reproduce:
* go to https://www.apple.com/watch with Safari on an iPad Pro
* scroll up and down a couple of times

Expected Results:
* no crash

Actual Results:
* crash

Regression:

Notes:
Also tested with an iPad Air 2 and couldn’t repo the behavior there. Attaching one of the generated JetsamEvent ips files.