From: Daniel Borkmann <daniel@iogearbox.net>
To: Johannes Krude <johannes@krude.de>,
bpf@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <jakub.kicinski@netronome.com>,
trivial@kernel.org
Subject: Re: [PATCH] bpf_prog_offload_info_fill: replace bitwise AND by logical AND
Date: Mon, 17 Feb 2020 16:56:57 +0100 [thread overview]
Message-ID: <5456d0d1-487d-1019-3083-397803b23888@iogearbox.net> (raw)
In-Reply-To: <20200212193227.GA3769@phlox.h.transitiv.net>
On 2/12/20 8:32 PM, Johannes Krude wrote:
> This if guards whether user-space wants a copy of the offload-jited
> bytecode and whether this bytecode exists. By erroneously doing a bitwise
> AND instead of a logical AND on user- and kernel-space buffer-size can lead
> to no data being copied to user-space especially when user-space size is a
> power of two and bigger then the kernel-space buffer.
>
> Signed-off-by: Johannes Krude <johannes@krude.de>
Applied, thanks!
prev parent reply other threads:[~2020-02-17 15:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 19:32 [PATCH] bpf_prog_offload_info_fill: replace bitwise AND by logical AND Johannes Krude
2020-02-13 3:38 ` Jakub Kicinski
2020-02-17 15:56 ` Daniel Borkmann [this message]
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