* bpfilter: write fail messages with 5.15.x and centos 7.9.2009 (fwd)
@ 2021-12-29 19:51 Holger Kiehl
2021-12-31 16:34 ` Alexei Starovoitov
0 siblings, 1 reply; 3+ messages in thread
From: Holger Kiehl @ 2021-12-29 19:51 UTC (permalink / raw)
To: netdev, bpf
Hello,
hope I am now sending it to the correct list.
Please, what else can I do to solve this?
Thanks,
Holger
---------- Forwarded message ----------
Date: Wed, 29 Dec 2021 13:27:58 +0000 (GMT)
From: Holger Kiehl <Holger.Kiehl@dwd.de>
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Subject: bpfilter: write fail messages with 5.15.x and centos 7.9.2009
Hello,
I just upgraded the kernel from 5.10.x to 5.15.12 on an old Centos
7.9.2009 server. The kernel is build on a new fedora 35 system
via 'make binrpm-pkg'. With this I see the following errors:
[ 232.140766] bpfilter: Loaded bpfilter_umh pid 6327
[ 232.152144] bpfilter: write fail -32
[ 232.187175] bpfilter: Loaded bpfilter_umh pid 6330
[ 232.198540] bpfilter: write fail -32
[ 232.234604] bpfilter: Loaded bpfilter_umh pid 6332
[ 232.245916] bpfilter: write fail -32
[ 232.281883] bpfilter: Loaded bpfilter_umh pid 6337
[ 232.293222] bpfilter: write fail -32
[ 232.335798] bpfilter: Loaded bpfilter_umh pid 6380
[ 232.347157] bpfilter: write fail -32
[ 244.411821] bpfilter: Loaded bpfilter_umh pid 6712
[ 244.423216] bpfilter: write fail -32
These appear as soon as something is done via iptables (setting
something or just viewing). Is this something I need to worry
about? Under 5.10.81 I did not see these messages.
In Jul 2020 I see a similar report 'bpfilter logging write errors in
dmesg', but could not find a solution.
Any hint what I can do to fix this?
Thanks,
Holger
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: bpfilter: write fail messages with 5.15.x and centos 7.9.2009 (fwd)
2021-12-29 19:51 bpfilter: write fail messages with 5.15.x and centos 7.9.2009 (fwd) Holger Kiehl
@ 2021-12-31 16:34 ` Alexei Starovoitov
2021-12-31 17:22 ` Holger Kiehl
0 siblings, 1 reply; 3+ messages in thread
From: Alexei Starovoitov @ 2021-12-31 16:34 UTC (permalink / raw)
To: Holger Kiehl; +Cc: Network Development, bpf
On Fri, Dec 31, 2021 at 1:23 AM Holger Kiehl <Holger.Kiehl@dwd.de> wrote:
>
> Hello,
>
> hope I am now sending it to the correct list.
>
> Please, what else can I do to solve this?
Turn that kconfig off. It shouldn't be used in production kernels.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: bpfilter: write fail messages with 5.15.x and centos 7.9.2009 (fwd)
2021-12-31 16:34 ` Alexei Starovoitov
@ 2021-12-31 17:22 ` Holger Kiehl
0 siblings, 0 replies; 3+ messages in thread
From: Holger Kiehl @ 2021-12-31 17:22 UTC (permalink / raw)
To: Alexei Starovoitov; +Cc: Network Development, bpf
On Fri, 31 Dec 2021, Alexei Starovoitov wrote:
> On Fri, Dec 31, 2021 at 1:23 AM Holger Kiehl <Holger.Kiehl@dwd.de> wrote:
>>
>> Hello,
>>
>> hope I am now sending it to the correct list.
>>
>> Please, what else can I do to solve this?
>
> Turn that kconfig off. It shouldn't be used in production kernels.
>
Correct. This is what I did when I noticed it was not used at all.
Many thanks!
Holger
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-12-31 17:22 UTC | newest]
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2021-12-29 19:51 bpfilter: write fail messages with 5.15.x and centos 7.9.2009 (fwd) Holger Kiehl
2021-12-31 16:34 ` Alexei Starovoitov
2021-12-31 17:22 ` Holger Kiehl
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