[PATCH net] net: bpf: fix bpf syscall dependence on anon_inodes

From: Alexei Starovoitov
Date: Thu Oct 09 2014 - 18:17:01 EST

minimal configurations where EPOLL, PERF_EVENTS, etc are disabled,
but NET is enabled, are failing to build with link error:
kernel/built-in.o: In function `bpf_prog_load':
syscall.c:(.text+0x3b728): undefined reference to `anon_inode_getfd'

fix it by selecting ANON_INODES when NET is enabled

Reported-by: Michal Sojka <sojkam1@xxxxxxxxxxx>
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxxxx>

I understand that 'select' is highly non-recommended for all good reasons,
but here 'depends on' is very user unfriendly, since ANON_INODES is
a hidden config that users cannot select directly.

net/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/net/Kconfig b/net/Kconfig
index d6b138e..6272420 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -6,6 +6,7 @@ menuconfig NET
bool "Networking support"
select NLATTR
+ select ANON_INODES
Unless you really know what you are doing, you should say Y here.
The reason is that some programs need kernel networking support even

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