Linux Kernel Daily: Critical Livepatch and Driver Fixes

Transcript

Good morning. This is Linux Kernel Daily for February 8th, 2026.

Yesterday saw five significant merge commits from Linus Torvalds addressing critical fixes across multiple kernel subsystems.

The most substantial merge pulled objtool fixes from Ingo Molnar, addressing serious livepatch compilation issues. The fixes bump minimum Clang assembler requirements to version 20 due to section handling bugs that were causing silent miscompilations. Additional changes strip livepatch symbol artifacts from non-livepatch modules and resolve build warnings with certain Clang LTO configurations.

Greg Kroah-Hartman's binder driver fixes target multiple crash scenarios in both C and Rust implementations. Key fixes include resolving use-after-free vulnerabilities in netlink reporting, correcting bounds checking in ID allocation, and adding proper alignment checks for Rust components.

Mark Brown provided SPI driver fixes focused on Tegra hardware, primarily addressing race conditions in interrupt handling for the Tegra210 QSPI driver. The changes protect current transfer operations with proper locking mechanisms to prevent corruption during concurrent access.

Scheduler fixes from Ingo Molnar resolve performance regressions in the recently rewritten SCHED_MM_CID management code. The patches address a livelock condition triggered during BPF testing, fix hard lockups on weakly ordered systems, and optimize CID transitions to restore thread-pool benchmark performance.

Finally, a single regulator fix corrects voltage descriptions for SpaceMIT P1 BUCK and LDO regulators, addressing incorrect hardware specifications.

What's next: With these stability fixes merged, expect continued focus on 6.19 release candidate refinements. The livepatch Clang requirement changes may impact some build environments requiring toolchain updates.

That's your Linux kernel update. I'm back tomorrow with the latest developments.