Bug 210108 – Network process crashes handling HTTP2 GRPC-Web response sent by recent Envoy versions

• Component: Page Loading
• Status: RESOLVED INVALID

[Julien Roncaglia]

Created attachment 395674 [details]
Crash file

One of our internal applications access a service via GRPC-Web over HTTP/2 (Website & API aren't public so I can't provide an easy public reproduction but it reproduces 100% of the time) it was working correctly before a technical upgrade on our side but is now crashing the network process of safari.

This problem has also been noticed by multiple envoy users see https://github.com/envoyproxy/envoy/issues/10514 and https://github.com/grpc/grpc-web/issues/759

The message visible in the safari console is : Failed to load resource: WebKit encountered an internal error
The message in the system log is: WebLoaderStrategy::networkProcessCrashed
The crash report generated are joined & all exhibit the following:

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Crashed Thread: 5 Dispatch queue: com.apple.CFNetwork.HTTP2.HTTP2Stream

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [57872]

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Other info:
This endpoint is hosted inside kubernetes & recently switched from envoy 1.12 to 1.13

Safari: 13.0.5 (14608.5.12)
Mac: Mojave 10.14.6 (18G3020), also reproduced on Catalina

[Julien Roncaglia]

Also sent via apple FeedbackAssistant FB7654794

[Alexey Proskuryakov]

Thank you! This issue is below WebKit, so it will continue to be tracked internally by Apple via your Feedback Assistant report.

rdar://problem/61383605