Messages in this thread | | | Subject | Re: [PATCH AUTOSEL 6.4 01/15] cpu/hotplug: Reset task stack state in _cpu_up() | From | David Woodhouse <> | Date | Mon, 03 Jul 2023 10:17:48 +0100 |
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On Sun, 2023-07-02 at 15:40 -0400, Sasha Levin wrote: > From: David Woodhouse <dwmw@amazon.co.uk> > > [ Upstream commit 6d712b9b3a58018259fb40ddd498d1f7dfa1f4ec ] > > Commit dce1ca0525bf ("sched/scs: Reset task stack state in bringup_cpu()") > ensured that the shadow call stack and KASAN poisoning were removed from > a CPU's stack each time that CPU is brought up, not just once. > > This is not incorrect.
No really, it *wasn't* incorrect. This isn't a bugfix that needs backporting; it's preparation for the parallel CPU bringup which I *hope* you aren't planning to backport in its entirety :)
Unless I'm missing something, I don't think you want this for stable (in any of the trees it was just sent out for).
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