Messages in this thread Patch in this message | | | Date | Fri, 6 Jul 2018 14:52:32 -0700 | From | Roman Gushchin <> | Subject | Re: [PATCH v2 bpf-next 02/14] bpf: introduce cgroup storage maps |
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On Fri, Jul 06, 2018 at 10:42:39PM +0800, kbuild test robot wrote: > Hi Roman, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on bpf-next/master] > > url: https://github.com/0day-ci/linux/commits/Roman-Gushchin/bpf-cgroup-local-storage/20180706-055938 > base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master > config: s390-performance_defconfig (attached as .config) > compiler: s390x-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 > reproduce: > wget https://urldefense.proofpoint.com/v2/url?u=https-3A__raw.githubusercontent.com_intel_lkp-2Dtests_master_sbin_make.cross&d=DwIBAg&c=5VD0RTtNlTh3ycd41b3MUw&r=jJYgtDM7QT-W-Fz_d29HYQ&m=ImwiAAR6DVyf5JEcIc5VLF9xY4lfFxVuk8_4BN6I03g&s=r0S7gFQPOZVZagshsK0pL3eU8_GRpD1ywrvYfXJ4yBQ&e= -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > GCC_VERSION=7.2.0 make.cross ARCH=s390 > > All errors (new ones prefixed by >>): > > In file included from kernel//bpf/local_storage.c:2:0: > include/linux/bpf-cgroup.h: In function 'cgroup_bpf_prog_attach': > >> include/linux/bpf-cgroup.h:237:10: error: 'EINVAL' undeclared (first use in this function) > return -EINVAL; > ^~~~~~ > include/linux/bpf-cgroup.h:237:10: note: each undeclared identifier is reported only once for each function it appears in > include/linux/bpf-cgroup.h: In function 'cgroup_bpf_prog_detach': > include/linux/bpf-cgroup.h:243:10: error: 'EINVAL' undeclared (first use in this function) > return -EINVAL; > ^~~~~~ > include/linux/bpf-cgroup.h: In function 'cgroup_bpf_prog_query': > include/linux/bpf-cgroup.h:249:10: error: 'EINVAL' undeclared (first use in this function) > return -EINVAL; > ^~~~~~ > > vim +/EINVAL +237 include/linux/bpf-cgroup.h > > 30070984 Daniel Mack 2016-11-23 232 > fdb5c453 Sean Young 2018-06-19 233 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr, > fdb5c453 Sean Young 2018-06-19 234 enum bpf_prog_type ptype, > fdb5c453 Sean Young 2018-06-19 235 struct bpf_prog *prog) > fdb5c453 Sean Young 2018-06-19 236 { > fdb5c453 Sean Young 2018-06-19 @237 return -EINVAL; > fdb5c453 Sean Young 2018-06-19 238 } > fdb5c453 Sean Young 2018-06-19 239 > > :::::: The code at line 237 was first introduced by commit > :::::: fdb5c4531c1e0e50e609df83f736b6f3a02896e2 bpf: fix attach type BPF_LIRC_MODE2 dependency wrt CONFIG_CGROUP_BPF > > :::::: TO: Sean Young <sean@mess.org> > :::::: CC: Daniel Borkmann <daniel@iogearbox.net>
These errors have nothing to do with the cgroup local storage patchset. They do exist in the current bpf-next tree. Here is the fix.
Thanks!
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From c0cd59b969e060765514224e31595763213e40f9 Mon Sep 17 00:00:00 2001 From: Roman Gushchin <guro@fb.com> Date: Fri, 6 Jul 2018 14:34:29 -0700 Subject: [PATCH bpf-next] bpf: include errno.h from bpf-cgroup.h
Commit fdb5c4531c1e ("bpf: fix attach type BPF_LIRC_MODE2 dependency wrt CONFIG_CGROUP_BPF") caused some build issues, detected by 0-DAY kernel test infrastructure.
The problem is that cgroup_bpf_prog_attach/detach/query() functions can return -EINVAL error code, which is not defined. Fix this adding errno.h to includes.
Fixes: fdb5c4531c1e ("bpf: fix attach type BPF_LIRC_MODE2 dependency wrt CONFIG_CGROUP_BPF") Signed-off-by: Roman Gushchin <guro@fb.com> Cc: Sean Young <sean@mess.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@kernel.org> --- include/linux/bpf-cgroup.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index 79795c5fa7c3..d50c2f0a655a 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -2,6 +2,7 @@ #ifndef _BPF_CGROUP_H #define _BPF_CGROUP_H +#include <linux/errno.h> #include <linux/jump_label.h> #include <uapi/linux/bpf.h> -- 2.14.4
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