From: Lorenz Bauer <oss@lmb.io>
To: shaozhengchao@huawei.com, ast@kernel.org, daniel@iogearbox.net
Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
sdf@google.com, yuehaibing@huawei.com, Lorenz Bauer <oss@lmb.io>
Subject: Re: [PATCH v4,bpf-next] bpf: Don't redirect packets with invalid pkt_len
Date: Wed, 14 Sep 2022 11:19:36 +0000 [thread overview]
Message-ID: <20220914111936.19881-1-oss@lmb.io> (raw)
In-Reply-To: <20220715115559.139691-1-shaozhengchao@huawei.com>
Hi,
I think this patch is causing user-space breakage, see [0].
The gist is that we do BPF_PROG_RUN of a socket filter with 14 byte input to determine whether
BPF_PROG_RUN is available or not. I'll fix this in cilium/ebpf, but I think this patch
needs more work since users may be doing the same thing in their code.
Thanks,
Lorenz
0: https://github.com/cilium/ebpf/pull/788
next prev parent reply other threads:[~2022-09-14 11:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-15 11:55 [PATCH v4,bpf-next] bpf: Don't redirect packets with invalid pkt_len Zhengchao Shao
2022-07-15 23:30 ` Stanislav Fomichev
2022-07-19 17:00 ` patchwork-bot+netdevbpf
2022-09-14 11:19 ` Lorenz Bauer [this message]
2022-09-17 15:46 ` Stanislav Fomichev
2022-09-19 10:55 ` shaozhengchao
2022-09-20 14:42 ` Lorenz Bauer
2022-09-21 8:48 ` shaozhengchao
2022-09-21 20:59 ` Stanislav Fomichev
2022-10-13 9:36 ` Lorenz Bauer
2022-10-13 10:44 ` shaozhengchao
2022-10-14 16:29 ` Lorenz Bauer
2022-10-14 16:55 ` sdf
2022-10-15 2:36 ` shaozhengchao
2022-11-03 21:07 ` Martin KaFai Lau
2022-11-03 21:36 ` Stanislav Fomichev
2022-11-03 22:42 ` Martin KaFai Lau
2022-11-03 22:58 ` Stanislav Fomichev
2022-11-09 21:43 ` Stanislav Fomichev
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