Re: [PATCH] fork: reset pointer tag of vmapped thread stack before vfree

From: David Hildenbrand (Arm)

Date: Fri Aug 07 2026 - 07:21:11 EST


On 8/7/26 12:41, sparkhuang wrote:
> On 2026-08-07 9:27 UTC, David wrote:
>> Were you able to reproduce this more than once?
>
> Still trying to reproduce it. So far it has only occurred this once.

Oh, and if it is about CONFIG_KASAN_STACK, I think you need a very deep stack to
set all the tags -- IIUC. Maybe that's what would trigger it easier.

--
Cheers,

David