From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
David Ahern <dsahern@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
X86 ML <x86@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Network Development <netdev@vger.kernel.org>,
bpf <bpf@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Subject: Re: [PATCH] x86 bpf: Fix extable offset calculation
Date: Fri, 25 Jun 2021 08:07:11 -0700 [thread overview]
Message-ID: <CAADnVQL7BdReSgw++Eh+MvS4+_uqnFFvp+7N4cGO2MWMTWaqcQ@mail.gmail.com> (raw)
In-Reply-To: <960b5e26-e97d-2b1a-4628-df8525c0728b@linux.ibm.com>
On Thu, Jun 24, 2021 at 11:22 PM Ravi Bangoria
<ravi.bangoria@linux.ibm.com> wrote:
> > Could you send a followup patch with a selftest, so I don't make
> > the same mistake again ? ;)
>
> Unfortunately extable gets involved only for bad kernel pointers and
> ideally there should not be any bad pointer in kernel. So there is no
> easy way to create a proper selftest for this.
Right. We have lib/test_bpf.c kernel module for such cases.
prev parent reply other threads:[~2021-06-25 15:07 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 15:21 [PATCH bpf-next 0/1] arm64: Add BPF exception tables Jean-Philippe Brucker
2020-07-28 15:21 ` Jean-Philippe Brucker
2020-07-28 15:21 ` [PATCH bpf-next 1/1] arm64: bpf: " Jean-Philippe Brucker
2020-07-28 15:21 ` Jean-Philippe Brucker
2020-07-29 17:28 ` Song Liu
2020-07-29 17:28 ` Song Liu
2020-07-29 21:29 ` Daniel Borkmann
2020-07-29 21:29 ` Daniel Borkmann
2020-07-30 8:28 ` Jean-Philippe Brucker
2020-07-30 8:28 ` Jean-Philippe Brucker
2020-07-30 12:28 ` Qian Cai
2020-07-30 12:28 ` Qian Cai
2020-07-30 14:22 ` Jean-Philippe Brucker
2020-07-30 14:22 ` Jean-Philippe Brucker
2020-07-30 19:47 ` Daniel Borkmann
2020-07-30 19:47 ` Daniel Borkmann
2020-07-30 21:14 ` Jean-Philippe Brucker
2020-07-30 21:14 ` Jean-Philippe Brucker
2020-07-30 22:45 ` Daniel Borkmann
2020-07-30 22:45 ` Daniel Borkmann
2021-06-09 12:04 ` [PATCH bpf-next 0/1] arm64: " Ravi Bangoria
2021-06-09 12:04 ` Ravi Bangoria
2021-06-11 0:12 ` Alexei Starovoitov
2021-06-11 0:12 ` Alexei Starovoitov
2021-06-17 6:58 ` Ravi Bangoria
2021-06-17 6:58 ` Ravi Bangoria
2021-06-18 16:34 ` Alexei Starovoitov
2021-06-18 16:34 ` Alexei Starovoitov
2021-06-22 7:10 ` Ravi Bangoria
2021-06-22 7:10 ` Ravi Bangoria
2021-06-22 11:00 ` [PATCH] x86 bpf: Fix extable offset calculation Ravi Bangoria
2021-06-25 4:01 ` Alexei Starovoitov
2021-06-25 6:22 ` Ravi Bangoria
2021-06-25 15:07 ` Alexei Starovoitov [this message]
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