Messages in this thread | | | Date | Sat, 9 Sep 2017 12:18:10 +0200 | From | Borislav Petkov <> | Subject | Re: Current mainline git (24e700e291d52bd2) hangs when building e.g. perf |
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On Sat, Sep 09, 2017 at 08:39:08AM +0200, Markus Trippelsdorf wrote: > Unfortunately the machine hangs in the BIOS after the first warm-reset. > Probably when it encounters an MCE it doesn't expect. I have to > warm-reset a second time to get to the boot-loader. So it is impossible > for me to see any possible MCE.
Ok, let's try to disable the syncflood before the test. As root:
# V=$(setpci -s 18.3 0x44.l) # echo $V # V=$(printf "0x%x" $((0x$V & ~(1 << 21)))) # setpci -s 18.3 0x44.l=$V # echo $V
I've added the echo $V so that you can paste them as a reply so that I can see their values.
And then run the triggering sequence again, better not on an X terminal but in the text console to see any MCEs when it freezes. I remember you saying that you don't have serial connected to it so catching the MCE would need more staring :)
Thx.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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