Date: Wed, 26 Jul 2017 21:59:53 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen... Message-ID: <bug-219399-8-AxDsYIfw6B@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-219399-8@https.bugs.freebsd.org/bugzilla/> References: <bug-219399-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219399 --- Comment #171 from Mark Millard <markmi@dsl-only.net> --- (In reply to rozhuk.im from comment #167) Machine Check Exceptions (MCEs) report various errors that are detected in various ways. For RAM: check or error correction bits (extra bits) are one way of of detecting RAM data problems. (ECC is one form of error correction bits.) Without redundancy via the extra bits, MCE has no source of information to report the specific type of error for RAM and simply does not report what is then not detected as a problem. In other words: no machine check exception then happens. See "Problem Types" in https://en.wikipedia.org/wiki/Machine-check_exception For a short mention of "Memory Errors" that mentions how they are detected for Machine Check Exceptions. --=20 You are receiving this mail because: You are the assignee for the bug.=
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