From: Jiri Olsa <jolsa@redhat.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>, Jiri Olsa <jolsa@kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
netdev@vger.kernel.org, bpf@vger.kernel.org,
Yonghong Song <yhs@fb.com>, Martin KaFai Lau <kafai@fb.com>,
David Miller <davem@redhat.com>,
John Fastabend <john.fastabend@gmail.com>,
Jesper Dangaard Brouer <hawk@kernel.org>,
Wenbo Zhang <ethercflow@gmail.com>,
KP Singh <kpsingh@chromium.org>, Andrii Nakryiko <andriin@fb.com>,
bgregg@netflix.com
Subject: Re: [RFC 0/3] bpf: Add d_path helper
Date: Tue, 7 Apr 2020 10:53:21 +0200 [thread overview]
Message-ID: <20200407085321.GA3144092@krava> (raw)
In-Reply-To: <20200407011052.khtujfdamjtwvpdp@ast-mbp.dhcp.thefacebook.com>
On Mon, Apr 06, 2020 at 06:10:52PM -0700, Alexei Starovoitov wrote:
> On Mon, Apr 06, 2020 at 11:09:18AM +0200, Jiri Olsa wrote:
> >
> > is there any way we could have d_path functionality (even
> > reduced and not working for all cases) that could be used
> > or called like that?
>
> I agree with Al. This helper cannot be enabled for all of bpf tracing.
> We have to white list its usage for specific callsites only.
> May be all of lsm hooks are safe. I don't know yet. This has to be
> analyzed carefully. Every hook. One by one.
> in_task() isn't really a solution.
ok, I thought of white list and it seemed too much to me,
but there's probably no other way
jirka
>
> At the same time I agree that such helper is badly needed.
> Folks have been requesting it for long time.
>
next prev parent reply other threads:[~2020-04-07 8:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 11:09 [RFC 0/3] bpf: Add d_path helper Jiri Olsa
2020-04-01 11:09 ` [PATCH 1/3] bpf: Add support to check if BTF object is nested in another object Jiri Olsa
2020-04-07 1:16 ` Alexei Starovoitov
2020-04-07 9:37 ` Jiri Olsa
2020-04-01 11:09 ` [PATCH 2/3] bpf: Add d_path helper Jiri Olsa
2020-04-02 14:02 ` Florent Revest
2020-04-03 9:01 ` Jiri Olsa
2020-04-06 2:49 ` Andrii Nakryiko
2020-04-01 11:09 ` [PATCH 3/3] selftests/bpf: Add test for " Jiri Olsa
2020-04-02 14:03 ` [RFC 0/3] bpf: Add " Florent Revest
2020-04-03 8:55 ` Jiri Olsa
2020-04-02 14:21 ` Al Viro
2020-04-03 9:08 ` Jiri Olsa
2020-04-06 3:16 ` Al Viro
2020-04-06 9:09 ` Jiri Olsa
2020-04-06 12:47 ` Al Viro
2020-04-07 1:10 ` Alexei Starovoitov
2020-04-07 8:53 ` Jiri Olsa [this message]
2020-04-07 9:27 ` KP Singh
2020-04-07 9:45 ` Jiri Olsa
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