Tagged: kernel

About linux : UDEV-Rule-to-exclude-bususb001-folder

Question Detail I’m trying to create simple udev rules to block all devices but mass storage being connected on a specific port (RASPBERRY PI 4). I came up with the following rules : Allowing...

About linux : Install-Raspberry-Pi-Imager-problem-with-bbswitch-dkms-on-PopOS

Question Detail Following https://www.raspberrypi.com/software/ to install Raspberry Pi Imager has these errors: seems related to bbswitch-dkms compiling issues: $ sudo apt install rpi-imager Reading package lists… Done Building dependency tree… Done Reading state information…...

About linux : Why-cant-I-read-from-proctimerlist

Question Detail I’m trying to read from /proc/timer_list in a Docker container. I think I’m doing everything right, and yet I get permission denied. $ podman run –privileged ubuntu:wily cat /proc/timer_list cat: /proc/timer_list: Permission...

About linux : Why-nmienter-when-there-is-no-NMI-only-machine-check-exception

Question Detail https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-8/-/blob/c8s/arch/x86/kernel/cpu/mce/core.c#L1299 void noinstr do_machine_check(struct pt_regs *regs, long error_code) { … nmi_enter(); … In my understanding, this nmi_enter() means to enter NMI context but if there is no NMI ( only machine check...