RESOLVED WORKSFORME 170398
[GTK] WebKitWebProcess crashes with SIGBUS 
https://bugs.webkit.org/show_bug.cgi?id=170398
Summary [GTK] WebKitWebProcess crashes with SIGBUS
Luka Napotnik
Reported 2017-04-03 03:36:26 PDT
Created attachment 306069 [details] full gdb backtrace of WebKitWebProcess Hello, I'm running a gtk3 app inside an Ubuntu docker container that load a page via WebKit and creates a snapshot of it. The problem I have is that in some web pages, the app would terminate with a SIGBUS signal. I've provided an attachment with the apps backtrace. The interesting thing is that the exact same app doesn't fail on the host system that much often as it does when inside Docker Software used: - x86-64 Ubuntu 16.04.1 on host - phusion/baseimage as container baseimage - Docker 1.12.3 - a build of webkitgtk 2.14.4 - cairo master @ cffa452f44eadebef8553502e3d6cc49829d38ce
Attachments
full gdb backtrace of WebKitWebProcess (69.21 KB, text/plain)
2017-04-03 03:36 PDT, Luka Napotnik 		no flags
Details
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Michael Catanzaro
Comment 1 2017-04-03 07:13:25 PDT
That's really deep in cairo, so I bet it's a cairo issue?
Luka Napotnik
Comment 2 2017-04-03 07:50:58 PDT
Is it possible that cairo is accessing webkit shared memory that was already destroyed by webkit, hence the SIGBUS signal?
Michael Catanzaro
Comment 3 2017-04-03 08:15:58 PDT
Maybe. Can you install WebKit debuginfo and attach a new backtrace? Do you have a web page that often reproduces this crash?
Luka Napotnik
Comment 4 2017-04-06 22:55:33 PDT
Hi. It seems that the small /dev/shm that's 64MB in docker caused a problem when dealing with shared memory. Increasing it to 1GB via '-shm-size 1GB' fixed the issue. Closing.
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