Re: [PATCH] powerpc/mm/book3s64/iommu: fix some RCU-list locks

From: Michael Ellerman
Date: Wed Feb 03 2021 - 06:41:18 EST


On Sun, 10 May 2020 01:15:59 -0400, Qian Cai wrote:
> It is safe to traverse mm->context.iommu_group_mem_list with either
> mem_list_mutex or the RCU read lock held. Silence a few RCU-list false
> positive warnings and fix a few missing RCU read locks.
>
> arch/powerpc/mm/book3s64/iommu_api.c:330 RCU-list traversed in non-reader section!!
>
> other info that might help us debug this:
>
> [...]

Applied to powerpc/next.

[1/1] powerpc/mm/book3s64/iommu: fix some RCU-list locks
https://git.kernel.org/powerpc/c/b5952f8125ae512420d5fc569adce591bea73bf5

cheers