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Merge tag 'livepatching-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

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Pull livepatching updates from Petr Mladek:

 - Forced transitions block only to-be-removed livepatches [Chengming]

 - Detect when ftrace handler could not be disabled in self-tests [David]

 - Calm down warning from a static analyzer [Tom]

* tag 'livepatching-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  livepatch: Reorder to use before freeing a pointer
  livepatch: Don't block removal of patches that are safe to unload
  livepatch: Skip livepatch tests if ftrace cannot be configured
This commit is contained in:
Linus Torvalds
2022-03-28 14:38:31 -07:00
parent a701f370b5 e7dbd4d536
commit d111c9f034
5 changed files with 32 additions and 8 deletions
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11
kernel/livepatch/transition.c
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@@ -641,6 +641,13 @@ void klp_force_transition(void)
for_each_possible_cpu(cpu)
klp_update_patch_state(idle_task(cpu));
klp_for_each_patch(patch)
patch->forced = true;
/* Set forced flag for patches being removed. */
if (klp_target_state == KLP_UNPATCHED)
klp_transition_patch->forced = true;
else if (klp_transition_patch->replace) {
klp_for_each_patch(patch) {
if (patch != klp_transition_patch)
patch->forced = true;
}
}
}