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Message-ID: <20171205194413.opdsw3muh2b7ujw5@ast-mbp.dhcp.thefacebook.com>
Date: Tue, 5 Dec 2017 11:44:14 -0800
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Edward Cree <ecree@...arflare.com>
Cc: davem <davem@...emloft.net>, netdev@...r.kernel.org,
Jann Horn <jannh@...gle.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [PATCH net 1/2] bpf/verifier: fix bounds calculation on BPF_RSH
On Tue, Dec 05, 2017 at 07:15:18PM +0000, Edward Cree wrote:
> Incorrect signed bounds were being computed, although this had no effect
> since the propagation in __reg_deduce_bounds() happened to overwrite them.
>
> Fixes: b03c9f9fdc37 ("bpf/verifier: track signed and unsigned min/max values")
> Reported-by: Jann Horn <jannh@...gle.com>
> Signed-off-by: Edward Cree <ecree@...arflare.com>
Acked-by: Alexei Starovoitov <ast@...nel.org>
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