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The Wire · Showcase

KERNEL EMERGENCY FIXES ACROSS KVM, X86, AND REAL-TIME SUBSYSTEMS

By RepoJournal · Filed · About Linux

Linus pulled five critical fix sets overnight addressing memory leaks, SEV guest failures, and real-time kernel regressions that block stable deployments.

The KVM team shipped fixes for arm64 ITS EventID sanitization and a PPI memory leak that crashes vcpu initialization [1], while RISC-V steal-time recording got a HVA validation patch. On the x86 side, a major change landed: SEV guests now handle encrypted memory failures conservatively to prevent silent data corruption [2], and Peter Zijlstra fixed a critical VMX hrtimer regression that broke RT scheduling. The irqchip fixes address two driver-specific issues: renesas-rzt2h's broken probe error path and exynos-combiner's spinlock contention on -rt kernels [3]. Real-time kernel users got relief from a debugobjects regression that was poisoning priority inheritance by incorrectly filling the pool under contention [4]. Separately, hwmon picked up adm1266 stability fixes and lenovo-ec-sensors got a devm cleanup fix that was leaking region references [5].

Action items

References

  1. [1] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm torvalds/linux
  2. [2] Merge tag 'x86-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip torvalds/linux
  3. [3] Merge tag 'irq-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip torvalds/linux
  4. [4] Merge tag 'core-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip torvalds/linux
  5. [5] Merge tag 'hwmon-for-v7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging torvalds/linux

FAQ

What changed in Linux on May 25, 2026?
Linus pulled five critical fix sets overnight addressing memory leaks, SEV guest failures, and real-time kernel regressions that block stable deployments.
What should Linux teams do about it?
Pull the x86-urgent-2026-05-24 merge immediately if running SEV-enabled guests • Rebase if you're carrying any real-time patches - the debugobjects and exynos-combiner fixes are blocking -rt stability • Apply KVM fixes before next vcpu initialization testing
Which Linux repositories shipped on May 25, 2026?
torvalds/linux

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