Linux's DRM Panic "Screen of Death" Sees Patches for QR Code Error Messages
Linux 6.10 introduces DRM Panic, a new panic screen akin to Windows' Blue Screen of Death, handling kernel errors and VT support. QR codes condense error messages for easier analysis, with a Rust-based "qr_code" panic screen patch by Jocelyn Falempe from Red Hat. This feature aims to improve error message handling in the Linux kernel.
Read original articleLinux 6.10 introduces DRM Panic, a new panic screen similar to Windows' Blue Screen of Death, to handle kernel errors and disabled VT support. Patches now allow condensing lengthy error messages into QR codes for easier capture and analysis. Jocelyn Falempe of Red Hat posted patches for a "qr_code" panic screen written in Rust. The use of QR codes for kernel error messages has been discussed previously, with Windows and other systems also exploring this approach. The DRM Panic QR code handler is now under review, showcasing examples of QR code DRM Panic support in action. The reasoning behind using Rust for the QR code generator was to explore its functionality within the kernel. The new feature aims to enhance error message handling and reporting within the Linux kernel environment.
Related
CVE-2021-4440: A Linux CNA Case Study
The Linux CNA mishandled CVE-2021-4440 in the 5.10 LTS kernel, causing information leakage and KASLR defeats. The issue affected Debian Bullseye and SUSE's 5.3.18 kernel, resolved in version 5.10.218.
The weirdest QNX bug I've ever encountered
The author encountered a CPU usage bug in a QNX system's 'ps' utility due to a 15-year-old bug. Debugging revealed a race condition, leading to code modifications and a shift towards open-source solutions.
Ubuntu kernel update cripples graphics on AMD GPUs
AMD GPUs with IOMMU enabled face null pointer dereference, causing black screens on boot for Picasso/Raven 2 GPUs. A fix is available by reverting a problematic patch, impacting Ubuntu users.
The Linux Kernel Matures to Having a Minimum Rust Toolchain Version
The Linux kernel is advancing to support multiple Rust compiler versions, starting with 1.78.0 and adding 1.79.0. This progress aims to stabilize Rust for Linux, enhancing driver and kernel code development efficiency.
Linux's DRM Panic "Screen of Death" Sees Patches for QR Code Error Messages
Linux 6.10 introduces DRM Panic, a new panic screen with QR code support for kernel errors. The feature, written in Rust, aims to streamline error message capture and analysis for improved efficiency.
Related
CVE-2021-4440: A Linux CNA Case Study
The Linux CNA mishandled CVE-2021-4440 in the 5.10 LTS kernel, causing information leakage and KASLR defeats. The issue affected Debian Bullseye and SUSE's 5.3.18 kernel, resolved in version 5.10.218.
The weirdest QNX bug I've ever encountered
The author encountered a CPU usage bug in a QNX system's 'ps' utility due to a 15-year-old bug. Debugging revealed a race condition, leading to code modifications and a shift towards open-source solutions.
Ubuntu kernel update cripples graphics on AMD GPUs
AMD GPUs with IOMMU enabled face null pointer dereference, causing black screens on boot for Picasso/Raven 2 GPUs. A fix is available by reverting a problematic patch, impacting Ubuntu users.
The Linux Kernel Matures to Having a Minimum Rust Toolchain Version
The Linux kernel is advancing to support multiple Rust compiler versions, starting with 1.78.0 and adding 1.79.0. This progress aims to stabilize Rust for Linux, enhancing driver and kernel code development efficiency.
Linux's DRM Panic "Screen of Death" Sees Patches for QR Code Error Messages
Linux 6.10 introduces DRM Panic, a new panic screen with QR code support for kernel errors. The feature, written in Rust, aims to streamline error message capture and analysis for improved efficiency.