From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 103351] Machine check exception on Broadwell quad-core with
SpeedStep enabled
Date: Wed, 14 Oct 2015 18:21:18 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=103351
--- Comment #58 from Henrique de Moraes Holschuh ---
(In reply to Fredrik Atmer from comment #57)
> I've had my setup i5-5675C on an Asus H97I-Plus motherboard for some time
...
> first, but the day after I was able to do a dist-upgrade of my 14.10 system
> to 15.04 using the 0x12 microcode (I used to have 0xd).
Hmm, libpthreads (glibc POSIX threads support) in Ubuntu 15.04 is supposed to
have lock elision enabled, and it should not be really happy with the i5-5675C
with microcode 0x12 (you'd need microcode 0x13).
Is "rtm" listed in your /proc/cpuinfo "flags" line?
Can you run heavily threaded applications without crashes?
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