[Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen...

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399

--- Comment #203 from Nils Beyer <nbe at renzel.net> ---
(In reply to Don Lewis from comment #202)

> BTW, using either my origin workaround patch, or the committed version if the sv_maxuser adjustment is commented out, it is possible to use a user process to mmap() the top page of user memory,
> load some code up there, and execute it for testing purposes.  I've done some experiments with that and it is possible to quickly hang the machine or cause it to reboot.

that sounds interesting; do you have source code for that available that I can
try here on my systems, please?

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