Messages in this thread | | | Date | Thu, 26 Nov 2015 19:09:34 +0100 | From | Borislav Petkov <> | Subject | Re: As of kernel 4.4-rc1 segmentation fault if msr module not loaded. [REGRESSION][BISECTED] |
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On Thu, Nov 26, 2015 at 08:25:43AM -0800, Doug Smythies wrote: > Hi, > > This might be considered a minor issue, but I submit my > findings anyhow. > > In some distros, the msr module is not loaded by default. > (I guess not built in by default, would be more correct.) > I often forget to load it before using "rdmsr" or "wrmsr". > It was never an issue before, but as of Kernel 4.4-rc1 > it causes a segmentation fault crash. Example: > > # rdmsr -a 0x19a > Segmentation fault (core dumped)
You can either cherrypick
http://git.kernel.org/tip/2d5be37d686c4dae8e60d20283d6f44ac2c44f65
or wait until it trickles upwards to Linus, most likely -rc3.
Thanks for the report. Good to know what else broke.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply.
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