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- Make sure tasks are thawed exactly and only once to avoid their state

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getting corrupted
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Merge tag 'sched_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:

 - Make sure tasks are thawed exactly and only once to avoid their state
   getting corrupted

* tag 'sched_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  freezer,sched: Do not restore saved_state of a thawed task
This commit is contained in:
Linus Torvalds 2023-12-10 11:09:16 -08:00
commit 3a87498869
1 changed files with 1 additions and 1 deletions
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2
kernel/freezer.c
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@ -201,7 +201,7 @@ void __thaw_task(struct task_struct *p)
if (WARN_ON_ONCE(freezing(p)))
goto unlock;
if (task_call_func(p, __restore_freezer_state, NULL))
if (!frozen(p) || task_call_func(p, __restore_freezer_state, NULL))
goto unlock;
wake_up_state(p, TASK_FROZEN);