On 5/21/22 15:59, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
>
> The patch below does not apply to the 5.4-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
>
> thanks,
>
> greg k-h
>
> ------------------ original commit in Linus's tree ------------------
>
>>From 9f46c187e2e680ecd9de7983e4d081c3391acc76 Mon Sep 17 00:00:00 2001
> From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Date: Fri, 20 May 2022 13:48:11 -0400
> Subject: [PATCH] KVM: x86/mmu: fix NULL pointer dereference on guest INVPCID
>
I don't think 5.4 or earlier need this patch as (AFAICT) the bug was
introduced by:
commit 5efac0741ce238e0844d3f7af00198f81e84926a
Author: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Date: Mon Mar 23 20:42:57 2020 -0400
KVM: x86: introduce kvm_mmu_invalidate_gva
which was merged in v5.8 and has not been backported to v5.4.y or any
earlier stable branch.
The reproducer does not crash on latest v5.4.y, which agrees with the above.
Vegard
