Linux Kernel: Storage and Memory Subsystem Fixes

Transcript

Good morning, this is your Linux Kernel developer briefing for May 20th, 2026.

Today we're covering seven commits merged by Linus Torvalds for kernel 7.1-rc5, focusing on critical subsystem fixes.

The largest merge addresses ATA storage driver issues. Niklas Cassel's fixes resolve problems with deferred non-NCQ command handling, particularly when using Port Multipliers. The changes prevent incorrect command deferral in PATA drivers and improve performance by storing deferred commands in per-link structures rather than per-port.

A substantial NTFS filesystem update from Namjae Jeon patches multiple security vulnerabilities. Key fixes include preventing buffer overflows, fixing use-after-free conditions, and validating MFT record attributes. The update also addresses memory leaks in security descriptor allocation and fixes synchronization issues with MFT mirror writes.

Andrew Morton's memory management fixes target 14 hotfixes, with 9 specifically for MM subsystem issues. Notable changes include fixes for device-private page unmapping, memory block reference leaks during hotplug operations, and improvements to DAMON tracepoint formatting.

Steve French contributed SMB server fixes addressing three critical null pointer dereferences and a memory leak in the ksmbd implementation.

The Kbuild system received two important fixes from Nicolas Schier. Hasan Basbunar resolved stack buffer overflows in modpost's alias generation functions, while Viktor Jägersküpper fixed pacman package versioning to ensure smooth upgrades from release candidate versions.

What's next: These fixes target stability for the 7.1 release cycle, with particular focus on storage subsystem reliability. The memory management improvements should enhance system stability under memory pressure conditions.

That's your kernel update for today. We'll be back tomorrow with more development news.