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The Wire · Showcase

KSMBD PROTOCOL FIXES LAND IN 7.2-RC, GFS2 QUOTA BUGS SQUASHED

By RepoJournal · Filed · About Linux

The kernel's SMB server implementation got a major protocol compliance overhaul after smbtorture exposed significant divergence from spec, while filesystems and power management shore up edge cases before the 7.2 release.

SMB3 support in ksmbd just got a correctness pass that rewrites lease state handling, oplock behavior, durable handle tracking, and CREATE/rename semantics to match actual protocol requirements [1]. This wasn't theoretical: smbtorture found real divergence that would break interop with strict clients. In parallel, GFS2 fixed a dangerous page poisoning bug during file growth and resolved quota initialization issues that were sleeping under bitlocks on PREEMPT_RT systems [2], which would deadlock real deployments. Thermal and power management got focused fixes: Intel's thermal_throttle driver no longer leaks resources on failure [3], and the schedutil governor's need_freq_update flag now clears correctly in the adjust_perf path to avoid spurious cpufreq calls [4]. eCryptfs received cleanup work replacing kmalloc/snprintf with kasprintf, reducing code footprint [5]. None of these are flashy, but they're the kind of subtle correctness fixes that prevent production headaches.

Action items

References

  1. [1] Merge tag 'v7.2-rc-part2-smb3-server-fixes' of git://git.samba.org/ksmbd torvalds/linux
  2. [2] Merge tag 'gfs2-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 torvalds/linux
  3. [3] Merge tag 'thermal-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm torvalds/linux
  4. [4] Merge tag 'pm-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm torvalds/linux
  5. [5] Merge tag 'ecryptfs-7.2-rc1-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs torvalds/linux

FAQ

What changed in Linux on June 27, 2026?
The kernel's SMB server implementation got a major protocol compliance overhaul after smbtorture exposed significant divergence from spec, while filesystems and power management shore up edge cases before the 7.2 release.
What should Linux teams do about it?
Test SMB3 workloads against 7.2-rc with strict Windows/Samba clients to verify oplock and lease fixes don't regress your workflows • If running GFS2 on PREEMPT_RT, prioritize 7.2 for the quota initialization fixes • Monitor thermal and cpufreq behavior on Intel systems in early 7.2 testing
Which Linux repositories shipped on June 27, 2026?
torvalds/linux

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