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From: Alexander Egorenkov <Alexander.Egorenkov@ibm.com>
To: memxor@gmail.com
Cc: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org,
	brouer@redhat.com, daniel@iogearbox.net, fw@strlen.de,
	john.fastabend@gmail.com, kafai@fb.com, maximmi@nvidia.com,
	netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
	pablo@netfilter.org, songliubraving@fb.com, toke@redhat.com,
	yhs@fb.com
Subject: Re: [PATCH bpf-next v8 00/10] Introduce unstable CT lookup helpers
Date: Fri, 18 Feb 2022 21:19:04 +0100	[thread overview]
Message-ID: <87y228q66f.fsf@oc8242746057.ibm.com> (raw)
In-Reply-To: <20220114163953.1455836-1-memxor@gmail.com>
In-Reply-To: 


Hi,

we are having a problem loading nf_conntrack on linux-next:

# modprobe nf_conntrack
modprobe: ERROR: could not insert 'nf_conntrack': Unknown symbol in module, or unknown parameter (see dmesg)
modprobe: ERROR: Error running install command '/sbin/modprobe --ignore-install nf_conntrack  && /sbin/sysctl --quiet --pattern 'net[.]netfilter[.]nf_conntrack.*' --system' for module nf_conntrack: retcode 1
modprobe: ERROR: could not insert 'nf_conntrack': Invalid argument

# dmesg
[ 3728.188969] missing module BTF, cannot register kfuncs
[ 3748.208674] missing module BTF, cannot register kfuncs
[ 3748.567123] missing module BTF, cannot register kfuncs
[ 3873.597276] missing module BTF, cannot register kfuncs
[ 3874.017125] missing module BTF, cannot register kfuncs
[ 3882.637097] missing module BTF, cannot register kfuncs
[ 3883.507213] missing module BTF, cannot register kfuncs
[ 3883.876878] missing module BTF, cannot register kfuncs

# zgrep BTF /proc/config.gz
CONFIG_DEBUG_INFO_BTF=y
CONFIG_PAHOLE_HAS_SPLIT_BTF=y
CONFIG_DEBUG_INFO_BTF_MODULES=y

It seems that nf_conntrack.ko is missing a .BTF section
which is present in debuginfo within
/usr/lib/debug/lib/modules/*/kernel/net/netfilter/nf_conntrack.ko.debug instead.

Am i correct in assuming that this is not supported (yet) ?

We use pahole 1.22 and build linux-next on Fedora 35 as a set of custom
packages. Architecture is s390x.

Thanks
Regards
Alex
 

  parent reply	other threads:[~2022-02-18 20:19 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-14 16:39 [PATCH bpf-next v8 00/10] Introduce unstable CT lookup helpers Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 01/10] bpf: Fix UAF due to race between btf_try_get_module and load_module Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 02/10] bpf: Populate kfunc BTF ID sets in struct btf Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 03/10] bpf: Remove check_kfunc_call callback and old kfunc BTF ID API Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 04/10] bpf: Introduce mem, size argument pair support for kfunc Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 05/10] bpf: Add reference tracking support to kfunc Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 06/10] net/netfilter: Add unstable CT lookup helpers for XDP and TC-BPF Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 07/10] selftests/bpf: Add test for unstable CT lookup API Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 08/10] selftests/bpf: Add test_verifier support to fixup kfunc call insns Kumar Kartikeya Dwivedi
2022-01-14 16:39 ` [PATCH bpf-next v8 09/10] selftests/bpf: Extend kfunc selftests Kumar Kartikeya Dwivedi
2022-05-26  1:22   ` Benjamin Poirier
2022-05-26  5:15     ` Kumar Kartikeya Dwivedi
2022-05-26  6:19       ` Benjamin Poirier
2022-01-14 16:39 ` [PATCH bpf-next v8 10/10] selftests/bpf: Add test for race in btf_try_get_module Kumar Kartikeya Dwivedi
2022-01-18 22:52   ` Alexei Starovoitov
2022-02-18 20:19 ` Alexander Egorenkov [this message]
2022-02-18 22:20   ` [PATCH bpf-next v8 00/10] Introduce unstable CT lookup helpers Kumar Kartikeya Dwivedi
2022-02-19  7:39     ` Alexander Egorenkov
2022-02-19  8:20       ` Kumar Kartikeya Dwivedi
2022-02-20  1:13       ` Andrii Nakryiko

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