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The Wire · Showcase

KUNIT WARNING SUPPRESSIONS BROKEN WHEN BUILT AS MODULE

By RepoJournal · Filed · About Linux

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.

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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

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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