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Message-ID: <57C4D3A0.7090100@iogearbox.net>
Date: Tue, 30 Aug 2016 02:30:24 +0200
From: Daniel Borkmann <daniel@iogearbox.net>
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To: Alexei Starovoitov <ast@fb.com>,
        "David S . Miller" <davem@davemloft.net>
CC: Peter Zijlstra <peterz@infradead.org>,
        Brendan Gregg <bgregg@netflix.com>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Wang Nan <wangnan0@huawei.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH net-next 3/6] bpf: perf_event progs should only use preallocated
 maps
References: <1472265084-1767670-1-git-send-email-ast@fb.com> <1472265084-1767670-4-git-send-email-ast@fb.com>
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On 08/27/2016 04:31 AM, Alexei Starovoitov wrote:
> Make sure that BPF_PROG_TYPE_PERF_EVENT programs only use
> preallocated hash maps, since doing memory allocation
> in overflow_handler can crash depending on where nmi got triggered.
>
> Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Acked-by: Daniel Borkmann <daniel@iogearbox.net>