On Thu, 20 Oct 2022 13:56:19 -0400 Waiman Long <longman@xxxxxxxxxx> wrote:
> Commit 6edda04ccc7c ("mm/kmemleak: prevent soft lockup in first object
> iteration loop of kmemleak_scan()") adds cond_resched() in the first
> object iteration loop of kmemleak_scan(). However, it turns that the
> 2nd objection iteration loop can still cause soft lockup to happen in
> some cases. So add a cond_resched() call in the 2nd and 3rd loops as
> well to prevent that and for completeness.
>
Seems reasonable, although not an object of beauty.
We didn't include a Fixes: or cc:stable in 6edda04ccc7c, even though it
addresses softlockups. I think I'll add a cc:stable to this, with a
Fixes:6edda04ccc7c. So any kenrel which included 6edda04ccc7c will
hopefully add this as well.
