From: David Miller <davem@davemloft.net>
To: jasowang@redhat.com
Cc: netdev@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
mst@redhat.com
Subject: Re: [PATCH net] vhost: reset metadata cache when initializing new IOTLB
Date: Wed, 08 Aug 2018 09:45:21 -0700 (PDT) [thread overview]
Message-ID: <20180808.094521.741471461713200.davem__42346.5760577985$1533746603$gmane$org@davemloft.net> (raw)
In-Reply-To: <1533699784-4950-1-git-send-email-jasowang@redhat.com>
From: Jason Wang <jasowang@redhat.com>
Date: Wed, 8 Aug 2018 11:43:04 +0800
> We need to reset metadata cache during new IOTLB initialization,
> otherwise the stale pointers to previous IOTLB may be still accessed
> which will lead a use after free.
>
> Reported-by: syzbot+c51e6736a1bf614b3272@syzkaller.appspotmail.com
> Fixes: f88949138058 ("vhost: introduce O(1) vq metadata cache")
> Signed-off-by: Jason Wang <jasowang@redhat.com>
Applied and queued up for -stable, thanks Jason.
prev parent reply other threads:[~2018-08-08 16:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-08 3:43 [PATCH net] vhost: reset metadata cache when initializing new IOTLB Jason Wang
2018-08-08 3:43 ` Jason Wang
2018-08-08 16:45 ` David Miller
2018-08-08 16:45 ` David Miller [this message]
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