SIGSYS needs to be reserved for seccomp-bpf

[RangelReale]

Hello,

in my CEF application running on Ubuntu 16.04 x64, the render process is terminating right after an iframe calls "postMessage", with the following message:

[1017/111424.317295:ERROR:trap.cc(101)] Existing signal handler when trying to install SIGSYS. SIGSYS needs to be reserved for seccomp-bpf.

Searching google, this looks like related to the linux sandbox, but I couldn't find anything about a relationship of this with postMessage, of how to prevent it crashing the render process.
Does someone knows this error?

[magreenblatt]

What CEF version? Does the problem reproduce with the CEF sample apps?

[RangelReale]

What CEF version? Does the problem reproduce with the CEF sample apps?

Sorry for the delay, I was trying to isolate were the error happens.
I compiled branch 3904 (version 78) with ffmpeg/h264 enabled.

We couldn't make the error happen on cefsimple, only on my version compiled on Ubuntu 16.04 x64.

This very simple html seems to triggers this error on my compilation. The application playlist lots of videos without problem, but when parsing a simple XML the renderer crashes.

====================
text = "<bookstore><book>" +
"<title>Everyday Italian</title>" +
"<author>Giada De Laurentiis</author>" +
"<year>2005</year>" +
"</book></bookstore>";

const parser = new DOMParser();
console.log(parser.parseFromString(text, "text/xml"));