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Subject: | MRF kernel module, failed to map BARS |
From: | GAGET Alexis via Tech-talk <tech-talk at aps.anl.gov> |
To: | "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
Date: | Tue, 23 Mar 2021 15:34:33 +0000 |
Dear All, Here at saclay we are using MRF timing system with MTCA.4 in R2 NAT crate.
I’m using the COMex-E3 and a MCH-PHYS80. The IOC using the mrfioc2 driver is running on the Comex and
the mrf kernel module is loaded on it. I have forked from ESS version of mrfioc2, and the kernel module I built seems the same. My kernel version is : 3.10.0-1160.15.2.el7.x86_64 on a CenTOS Linux 7.9.2009 It works globally very well, but I have a reproducible issue: When I reboot the whole R2 crate and when I load the MRF kernel module I have the following message : [ 347.344081] mrf: module verification failed: signature and/or required key missing - tainting kernel Consequence, my Comex can’t find some of my EVR or EVM (some are found..). To make it work I just have to reboot the Comex and after that it’s working. Meaning after a shutdown I have
to reboot it twice… Does anyone have this kind of trouble ? Knows how to solve it ? or even understand this message ? Thanks for your consideration Alexis GAGET CEA Saclay - DRF/Irfu/DIS/LDISC Bâtiment 472 – pièce 105 01 69 08 95 17 |