Linux Kernel Daily: Late-Cycle Fixes for MIPS and S390

Linus Torvalds merged two architecture-specific fix batches today, covering MIPS platform reliability issues and two S390 security-relevant bugs involving key handling and buffer copies.

Duration: PT1M56S

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: 2026-07-05T06:00:16Z
  • Audio duration: PT1M56S

Transcript excerpt

This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.

Good morning. It's July 5th, 2026, and this is Linux Kernel Daily.

Today's activity is small but focused: two merges from Linus Torvalds, both late-cycle fix pulls for specific architectures, MIPS and S390. No new features here, just cleanup of edge cases before things settle.

On the MIPS side, commit 410430b brings in fixes from Thomas Bogendoerfer covering a handful of platform quirks. There's a highmem check added before removing a memory block, which guards against a bad memory operation on certain configurations. There's also an IRQ work mechanism added for Loongson 64 systems using…

The more notable theme today is on S390, in commit 7404ce5. Two fixes here touch security-sensitive code paths. First, the protected key verification ioctl had a flawed key-type check based on key length, which could miscalculate bit sizes, that generic check has been removed in favor of letting the pkey handler…

The pattern across both merges is the same: these are hardening and correctness passes on architecture-specific code, not new capability. For MIPS and S390 users, these are the fixes you want in your next stable pull rather than urgent action items.

That's the briefing for today. Stay…

Nearby episodes from Linux Kernel Daily

  1. The RC2 Cleanup Wave
  2. Breaking Up the Device ID Header
  3. Weekly Recap - Timer Infrastructure Overhaul
  4. VFS Infrastructure Overhaul and Performance Improvements
  5. Subsystem Fixes and Maintainer Transition
  6. Memory Safety and Reference Counting Fixes
  7. Critical Memory Safety and Performance Fixes
  8. Release Candidate Fixes and Namespace Security