Re: [PATCH v2] mm/slub: fix panic in slab_alloc_node()

[Laurent Dufour]

Le 28/10/2020 à 12:11, Christopher Lameter a écrit :
> On Tue, 27 Oct 2020, Laurent Dufour wrote:
>
> > The issue is that object is not NULL while page is NULL which is odd but
> > may happen if the cache flush happened after loading object but before
> > loading page. Thus checking for the page pointer is required too.
>
>
> Ok then lets revert commit  6159d0f5c03e? The situation may occur
> elsewhere too.

The only other call to node_match() is in ___slab_alloc(), and the page pointer 
is already checked there.
So there is no real need to check it in node_match().