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Date:   Wed, 8 Apr 2020 17:47:32 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Peter Xu <peterx@redhat.com>
Cc:     linux-kernel@vger.kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        linux-mm@kvack.org
Subject: Re: [PATCH 0/2] mm: Two small fixes for recent syzbot reports
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On Tue,  7 Apr 2020 21:40:08 -0400 Peter Xu <peterx@redhat.com> wrote:

> The two patches should fix below syzbot reports:
> 
>   BUG: unable to handle kernel paging request in kernel_get_mempolicy
>   https://lore.kernel.org/lkml/0000000000002b25f105a2a3434d@google.com/
> 
>   WARNING: bad unlock balance in __get_user_pages_remote
>   https://lore.kernel.org/lkml/00000000000005c65d05a2b90e70@google.com/

(Is there an email address for the syzbot operators?)

sysbot does test linux-next, yet these patches sat in linux-next for a
month without a peep, but all hell broke loose when they hit Linus's
tree.  How could this have happened?

Possibly I've been carrying a later patch which fixed all this up, but
I'm not seeing anything like that.  Nothing at all against mm/gup.c.