From: Daniel Borkmann <daniel@iogearbox.net>
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
Date: Tue, 30 Aug 2016 02:30:24 +0200 [thread overview]
Message-ID: <57C4D3A0.7090100@iogearbox.net> (raw)
In-Reply-To: <1472265084-1767670-4-git-send-email-ast@fb.com>
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>
next prev parent reply other threads:[~2016-08-30 0:30 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-27 2:31 [PATCH net-next 0/6] perf, bpf: add support for bpf in sw/hw perf_events Alexei Starovoitov
2016-08-27 2:31 ` [PATCH net-next 1/6] bpf: support 8-byte metafield access Alexei Starovoitov
2016-08-29 23:44 ` Daniel Borkmann
2016-08-27 2:31 ` [PATCH net-next 2/6] bpf: introduce BPF_PROG_TYPE_PERF_EVENT program type Alexei Starovoitov
2016-08-30 0:14 ` Daniel Borkmann
2016-08-27 2:31 ` [PATCH net-next 3/6] bpf: perf_event progs should only use preallocated maps Alexei Starovoitov
2016-08-30 0:30 ` Daniel Borkmann [this message]
2016-08-27 2:31 ` [PATCH net-next 4/6] perf, bpf: add perf events core support for BPF_PROG_TYPE_PERF_EVENT programs Alexei Starovoitov
2016-08-29 12:17 ` Peter Zijlstra
2016-08-31 3:40 ` Alexei Starovoitov
2016-08-27 2:31 ` [PATCH net-next 5/6] samples/bpf: add perf_event+bpf example Alexei Starovoitov
2016-08-27 2:31 ` [PATCH net-next 6/6] samples/bpf: add sampleip example Alexei Starovoitov
2016-08-29 10:58 ` [PATCH net-next 0/6] perf, bpf: add support for bpf in sw/hw perf_events Peter Zijlstra
2016-08-29 23:08 ` Alexei Starovoitov
2016-08-29 12:19 ` Peter Zijlstra
2016-08-30 2:27 ` Brendan Gregg
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