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Message-Id: <20190212.103821.1113180544052186059.davem@davemloft.net> Date: Tue, 12 Feb 2019 10:38:21 -0800 (PST) From: David Miller <davem@...emloft.net> To: kal.conley@...tris.com Cc: willemb@...gle.com, edumazet@...gle.com, alexander.h.duyck@...el.com, jeffrey.t.kirsher@...el.com, ktkhai@...tuozzo.com, vincent.whitchurch@...s.com, lirongqing@...du.com, magnus.karlsson@...el.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2] net/packet: fix 4gb buffer limit due to overflow check From: Kal Conley <kal.conley@...tris.com> Date: Sun, 10 Feb 2019 09:57:11 +0100 > When calculating rb->frames_per_block * req->tp_block_nr the result > can overflow. Check it for overflow without limiting the total buffer > size to UINT_MAX. > > This change fixes support for packet ring buffers >= UINT_MAX. > > Fixes: 8f8d28e4d6d8 ("net/packet: fix overflow in check for tp_frame_nr") > Signed-off-by: Kal Conley <kal.conley@...tris.com> > --- > Changes in v2: > - Add Signed-off-by and Fixes tag Applied and queued up for -stable, thanks.
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