linux-kernel - Re: [PATCH] selftests/net: skip psock_tpacket test if KALLSYMS was not enabled

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Date:   Thu, 13 Jun 2019 18:28:44 +0800
From:   Po-Hsu Lin <po-hsu.lin@...onical.com>
To:     David Miller <davem@...emloft.net>
Cc:     shuah <shuah@...nel.org>, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/net: skip psock_tpacket test if KALLSYMS was
 not enabled

Hello,

This issue was spotted on Ubuntu linux-kvm kernel, on which the
CONFIG_KALLSYMS was disabled intentionally.
I think this extra check could be helpful when running the net test directly.
$ make -C tools/testing/selftests TARGETS=net run_tests

Also, there is an identical check implemented in the ftrace
kprobe_args_symbol test.

I can send V2 along with CONFIG_KALLSYMS appended to the "config" file
if you agree with this.

Thanks

On Thu, Jun 13, 2019 at 12:27 AM David Miller <davem@...emloft.net> wrote:
>
> From: Po-Hsu Lin <po-hsu.lin@...onical.com>
> Date: Wed, 12 Jun 2019 14:47:52 +0800
>
> > The psock_tpacket test will need to access /proc/kallsyms, this would
> > require the kernel config CONFIG_KALLSYMS to be enabled first.
> >
> > Check the file existence to determine if we can run this test.
> >
> > Signed-off-by: Po-Hsu Lin <po-hsu.lin@...onical.com>
>
> Please just add CONFIG_KALLSYMS to "config".