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wire 2026-07-16
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KUNIT WARNING SUPPRESSIONS BROKEN WHEN BUILT AS MODULE

By RepoJournal · Filed · About Linux · Composed from the cited sources · methodology

Linus Torvalds
1 person shipped this
Linus Torvalds @torvalds 2 cited

Kernel testing infrastructure loses the ability to suppress warnings in 7.2-rc4 when kunit loads as a module instead of built-in, breaking test validation across the board.

The kunit fix [1] addresses a critical gap where lib/bug.c only builds warning suppression code when CONFIG_KUNIT is compiled in, leaving modular builds without the capability entirely. This isn't a new feature regression - it's an existing stub that was never wired up for the tristate case, which means any test harness relying on these suppressions silently fails to work. In parallel, two kselftest fixes [2] land for ftrace and tracing: the add_remove_fprobe_module test now correctly reads enabled_func state, and trigger-hist-poll.tc switches to sched_process_exit for more reliable process tracking. These are repair work on the testing layer itself, not kernel bugs, but they matter because broken tests hide real problems downstream.

Action items

References

  1. [1] Merge tag 'linux_kselftest-kunit-fixes-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest torvalds/linux ↗
  2. [2] Merge tag 'linux_kselftest-fixes-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest torvalds/linux ↗

$ ls linux/reviews/ # the step-back reads

the week in review Omarchy polkit PAM stack skipped system-auth the month in review Linux 7.3 rc cycle fixes cgroup kill, SMB corruption
Full archive → Weekly reviews →

Quick answers

What shipped in Linux on July 16, 2026?
Kernel testing infrastructure loses the ability to suppress warnings in 7.2-rc4 when kunit loads as a module instead of built-in, breaking test validation across the board. In total, 2 commits landed.
Who contributed to Linux on July 16, 2026?
1 developer shipped this update, including Linus Torvalds.
What were the notable Linux updates?
Merge tag 'linux_kselftest-kunit-fixes-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest and Merge tag 'linux_kselftest-fixes-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.
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$ log Linux --recent

drm-fixes backs out dma-buf debug, vfs closes pathwalk use-after-frees 29 shipped Netlink stops hashing the net pointer, stmmac clears a stuck RGMII interrupt 27 shipped Poly1305 carry fix lands, Omarchy locks down N1x laptops and idle fingerprint readers 23 shipped Omarchy copies agent logins over SSH, kernel queues 7.4 merges 106 shipped

$ log --all # elsewhere on the wire

Alignment & Post-training verl rejects conflicting vLLM engine_kwargs, open-instruct adds MILES OPD behind a Megatron learner Interpretability nnsight 0.8.0 cuts import time from 7.6s to 1.6s

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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