Comment 94 for bug 1690085
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#94 |
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bbfa235
(Get the code!)
(In reply to Wim Van Sebroeck from comment #8)
> Bug confirmed. Will revert patch 1fccb73011ea8a5
Are you sure? That commit concerns iTCO_wdt, which is an Intel driver?
I have seen similar freezes many times. I captured the last time with netconsole and admittedly the call trace was different but I've seen many reports of Ryzen freezes on a variety of motherboards and disabling C6 or enabling CONFIG_RCU_NOCB_CPU is always said to work around it. Both of these certainly work here.
I must stress that this issue must be not confused with the segfault issue commonly reported with early Ryzens. I was facing that issue too and had my CPU replaced but while the segfaults have gone, both my original and the replacement exhibit these freezes.
I believe we have not seen so many reports of this issue, partly because most users will not know how to get kernel output in this situation, and partly because Fedora's kernel already has CONFIG_RCU_NOCB_CPU enabled. I am using Gentoo but I have confirmed that this affects Debian.