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From: Jason Wang <jasowang@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>, linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org, John Fastabend <john.fastabend@gmail.com>,
	David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next 00/12] ptr_ring fixes
Date: Fri, 26 Jan 2018 11:20:38 +0800	[thread overview]
Message-ID: <7530384d-2bc9-821a-c1f5-8128a6a92d45@redhat.com> (raw)
In-Reply-To: <1516923320-16959-1-git-send-email-mst@redhat.com>



On 2018年01月26日 07:36, Michael S. Tsirkin wrote:
> This fixes a bunch of issues around ptr_ring use in net core.
> One of these: "tap: fix use-after-free" is also needed on net,
> but can't be backported cleanly.
>
> I will post a net patch separately.
>
> Lightly tested - Jason, could you pls confirm this
> addresses the security issue you saw with ptr_ring?
> Testing reports would be appreciated too.

With the reproducer provided by syzbot, the problem has been fixed.

Thanks

  parent reply	other threads:[~2018-01-26  3:20 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-25 23:36 [PATCH net-next 00/12] ptr_ring fixes Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 01/12] ptr_ring: keep consumer_head valid at all times Michael S. Tsirkin
2018-01-26  0:11   ` John Fastabend
2018-01-25 23:36 ` [PATCH net-next 02/12] ptr_ring: clean up documentation Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 03/12] ptr_ring: READ/WRITE_ONCE for __ptr_ring_empty Michael S. Tsirkin
2018-01-26  2:37   ` Jason Wang
2018-01-26  2:44     ` Michael S. Tsirkin
2018-01-26  3:19       ` Jason Wang
2018-01-26 13:44         ` Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 04/12] tap: fix use-after-free Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 05/12] ptr_ring: disallow lockless __ptr_ring_full Michael S. Tsirkin
2018-01-26  2:38   ` Jason Wang
2018-01-26  2:46     ` Michael S. Tsirkin
2018-01-29  3:36       ` Jason Wang
2018-01-29  4:41         ` Michael S. Tsirkin
2018-01-29  7:09           ` Jason Wang
2018-01-25 23:36 ` [PATCH net-next 06/12] Revert "net: ptr_ring: otherwise safe empty checks can overrun array bounds" Michael S. Tsirkin
2018-01-26  0:12   ` John Fastabend
2018-01-25 23:36 ` [PATCH net-next 07/12] skb_array: use __ptr_ring_empty Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 08/12] ptr_ring: prevent queue load/store tearing Michael S. Tsirkin
2018-01-26  2:38   ` Jason Wang
2018-01-26  2:49     ` Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 09/12] tools/virtio: switch to __ptr_ring_empty Michael S. Tsirkin
2018-01-25 23:36 ` Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 10/12] tools/virtio: more stubs to fix tools build Michael S. Tsirkin
2018-01-25 23:36   ` Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 11/12] tools/virtio: copy READ/WRITE_ONCE Michael S. Tsirkin
2018-01-25 23:36 ` Michael S. Tsirkin
2018-01-25 23:36 ` [PATCH net-next 12/12] tools/virtio: fix smp_mb on x86 Michael S. Tsirkin
2018-01-26  3:56   ` Jason Wang
2018-01-26  3:56     ` Jason Wang
2018-01-26 13:45     ` Michael S. Tsirkin
2018-01-26 13:45     ` Michael S. Tsirkin
2018-01-25 23:36 ` Michael S. Tsirkin
2018-01-26  3:20 ` Jason Wang [this message]
2018-01-29  7:10 ` [PATCH net-next 00/12] ptr_ring fixes Jason Wang
2018-01-29 17:03   ` David Miller

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