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Subject: [Bug 219399] System panics after several hours of
 14-threads-compilation orgies using poudriere on AMD Ryzen...
Date: Sun, 06 Aug 2017 23:18:32 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219399

--- Comment #211 from Don Lewis <truckman@FreeBSD.org> ---
(In reply to Nils Beyer from comment #210)
No.  The kernel needs to be modified to move the shared page out of the way=
 so
that the program can mmap() the top page of user memory.

With an unmodified kernel, it should be possible to trigger the problem by
writing a program that installs a signal handler for some signal and then
sending itself signals by calling kill() in a loop.

--=20
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