Linux Kernel Daily: Scheduler Extensions Overhaul and GPU Fixes
Linus Torvalds merged a major batch of sched_ext fixes addressing use-after-free bugs, deadlocks, and sub-scheduler infrastructure issues. Additional commits include io_uring buffer improvements and AMD GPU overflow vulnerability patches.
Duration: PT1M58S
Episode overview
This episode is a short developer briefing from Linux Kernel Daily.
It explains recent repository work in plain language.
- Show: Linux Kernel Daily
- Published: 2026-04-28T00:00:00Z
- Audio duration: PT1M58S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning. This is Linux Kernel Daily for April 28th, 2026.
Linus Torvalds merged a substantial set of sched_ext fixes from Tejun Heo, addressing critical issues in the cgroup sub-scheduler infrastructure. The 26-commit merge resolves use-after-free vulnerabilities during scheduler load and unload operations, where the BPF scheduler could be freed while deferred work was…
Additional commits include io_uring improvements by Martin Michaelis and Jens Axboe. Michaelis added support for minimum length thresholds in incremental buffer consumption, preventing spurious errors in applications using recvmsg multishot. Axboe capped NAPI busy polling to 10 milliseconds to prevent kernel…
Benjamin Cheng contributed security fixes for AMD GPU drivers, patching integer overflow vulnerabilities in VCN3 and VCN4 message boundary checks that were flagged by security researchers. Lijo Lazar added a missing fine-grained clock flag to SMU v13.0.6, fixing incorrect frequency reporting on affected hardware.
Richard Fitzgerald resolved an illegal register write issue in the cs35l56 audio codec driver by marking OTP memory registers as volatile, preventing regcache sync operations from attempting writes…
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