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Merge tag 'cgroup-for-6.16-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

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Pull cgroup fix from Tejun Heo:

 - In cgroup1 freezer, a task migrating into a frozen cgroup might not
   get frozen immediately due to the wrong operation order. Fix it.

* tag 'cgroup-for-6.16-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup,freezer: fix incomplete freezing when attaching tasks
This commit is contained in:
Linus Torvalds
2025-06-18 14:25:50 -07:00
parent 0564e6a8c2 37fb58a727
commit 74b4cc9b87
1 changed files with 1 additions and 2 deletions
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3
kernel/cgroup/legacy_freezer.c
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@@ -188,13 +188,12 @@ static void freezer_attach(struct cgroup_taskset *tset)
if (!(freezer->state & CGROUP_FREEZING)) {
__thaw_task(task);
} else {
freeze_task(task);
/* clear FROZEN and propagate upwards */
while (freezer && (freezer->state & CGROUP_FROZEN)) {
freezer->state &= ~CGROUP_FROZEN;
freezer = parent_freezer(freezer);
}
freeze_task(task);
}
}