* Re: [RFC PATCH bpf-next 1/2] bpf: share BTF "show" implementation between kernel and libbpf
@ 2021-01-11 21:56 kernel test robot
2021-01-11 21:56 ` [PATCH] bpf: fix itnull.cocci warnings kernel test robot
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2021-01-11 21:56 UTC (permalink / raw)
To: kbuild
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CC: kbuild-all(a)lists.01.org
In-Reply-To: <1610386373-24162-2-git-send-email-alan.maguire@oracle.com>
References: <1610386373-24162-2-git-send-email-alan.maguire@oracle.com>
TO: Alan Maguire <alan.maguire@oracle.com>
Hi Alan,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on bpf-next/master]
url: https://github.com/0day-ci/linux/commits/Alan-Maguire/bpf-libbpf-share-BTF-data-show-functionality/20210112-013917
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
:::::: branch date: 4 hours ago
:::::: commit date: 4 hours ago
config: riscv-randconfig-c003-20210111 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
"coccinelle warnings: (new ones prefixed by >>)"
>> kernel/bpf/btf_show_common.c:1111:6-7: ERROR: iterator variable bound on line 1109 cannot be NULL
Please review and possibly fold the followup patch.
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH] bpf: fix itnull.cocci warnings
2021-01-11 21:56 [RFC PATCH bpf-next 1/2] bpf: share BTF "show" implementation between kernel and libbpf kernel test robot
@ 2021-01-11 21:56 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-01-11 21:56 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 1793 bytes --]
CC: kbuild-all(a)lists.01.org
In-Reply-To: <1610386373-24162-2-git-send-email-alan.maguire@oracle.com>
References: <1610386373-24162-2-git-send-email-alan.maguire@oracle.com>
TO: Alan Maguire <alan.maguire@oracle.com>
From: kernel test robot <lkp@intel.com>
kernel/bpf/btf_show_common.c:1111:6-7: ERROR: iterator variable bound on line 1109 cannot be NULL
Many iterators have the property that the first argument is always bound
to a real list element, never NULL.
Semantic patch information:
False positives arise for some iterators that do not have this property,
or in cases when the loop cursor is reassigned. The latter should only
happen when the matched code is on the way to a loop exit (break, goto,
or return).
Generated by: scripts/coccinelle/iterators/itnull.cocci
CC: Alan Maguire <alan.maguire@oracle.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---
url: https://github.com/0day-ci/linux/commits/Alan-Maguire/bpf-libbpf-share-BTF-data-show-functionality/20210112-013917
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
:::::: branch date: 4 hours ago
:::::: commit date: 4 hours ago
Please take the patch only if it's a positive warning. Thanks!
btf_show_common.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/kernel/bpf/btf_show_common.c
+++ b/kernel/bpf/btf_show_common.c
@@ -1108,8 +1108,7 @@ void btf_datasec_show(const struct btf *
__btf_name_by_offset(btf, t->name_off));
for_each_vsi(i, t, vsi) {
var = btf_type_by_id(btf, vsi->type);
- if (i)
- btf_show(show, ",");
+ btf_show(show, ",");
btf_type_ops_show(btf, var, vsi->type,
data + vsi->offset, bits_offset, show);
}
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-01-11 21:56 [RFC PATCH bpf-next 1/2] bpf: share BTF "show" implementation between kernel and libbpf kernel test robot
2021-01-11 21:56 ` [PATCH] bpf: fix itnull.cocci warnings kernel test robot
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