[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 #205 from Nils Beyer <nbe at renzel.net> ---
(In reply to Don Lewis from comment #204)

absolutely wonderful test case you've created - despite your instructions I've
run that program on a vanilla 11.1-RELEASE (no patches) on my second Ryzen
system (the one with 16GB where I've never poudriered), and it freezes exactly
there where you have experienced it (done it via SSH, so output is still
visible):
-------------------------------------------------------------------------------
[...]
executing at 0x7fffffffff30 ..........
executing at 0x7fffffffff31 ..........
executing at 0x7fffffffff32 ..........
executing at 0x7fffffffff33 ..........
executing at 0x7fffffffff34 ..........
executing at 0x7fffffffff35 ..........
executing at 0x7fffffffff36 ..........
executing at 0x7fffffffff37 ..........
executing at 0x7fffffffff38 ..........
executing at 0x7fffffffff39 ..........
executing at 0x7fffffffff3a ..........
executing at 0x7fffffffff3b ..........
executing at 0x7fffffffff3c ..........
executing at 0x7fffffffff3d ..........
executing at 0x7fffffffff3e ..........
executing at 0x7fffffffff3f ..........
executing at 0x7fffffffff40 ...
-------------------------------------------------------------------------------

tried that on my Intel Xeon E3-1220 v3 system, but had to use the second
"WHERE"-define because it couldn't mmap at 0x7f(...) - ENOMEM. Anyways, the
result is that it didn't freeze there...

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