From: Jesper Dangaard Brouer <brouer@redhat.com>
To: Daniel Borkmann <borkmann@iogearbox.net>,
Martin KaFai Lau <kafai@fb.com>
Cc: brouer@redhat.com, "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Strange samples/bpf loading error for maps on net-next?
Date: Thu, 27 Apr 2017 13:15:42 +0200 [thread overview]
Message-ID: <20170427131542.3c8dfa24@redhat.com> (raw)
To provoke this bug, remember that you MUST call:
make headers_install
In the kernels root directory, else you will be compiling samples/bpf/
against the older headers previously installed.
The error looks like:
$ sudo ./sockex1
bpf_load_program() err=22
fd 0 is not pointing to valid bpf_map
sockex1: [...]/samples/bpf/sockex1_user.c:26: main: Assertion `setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd, sizeof(prog_fd[0])) == 0' failed.
Aborted
I've found that the bug were introduced in
commit: fb30d4b71214 ("bpf: Add tests for map-in-map")
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
next reply other threads:[~2017-04-27 11:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-27 11:15 Jesper Dangaard Brouer [this message]
2017-04-28 5:49 ` Strange samples/bpf loading error for maps on net-next? Alexei Starovoitov
2017-04-28 6:28 ` Jesper Dangaard Brouer
2017-04-28 14:25 ` [net-next PATCH V1] samples/bpf: bpf_load.c detect and abort if ELF maps section size is wrong Jesper Dangaard Brouer
2017-04-29 3:35 ` Alexei Starovoitov
2017-04-29 7:57 ` Jesper Dangaard Brouer
2017-05-01 2:43 ` David Miller
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