2021-03-18 02:00:51

by Jiapeng Chong

Subject: [PATCH] selftests/bpf: fix warning comparing pointer to 0

Fix the following coccicheck warning:

./tools/testing/selftests/bpf/progs/fentry_test.c:76:15-16: WARNING
comparing pointer to 0.

Reported-by: Abaci Robot <[email protected]>
Signed-off-by: Jiapeng Chong <[email protected]>
---
tools/testing/selftests/bpf/progs/fentry_test.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/fentry_test.c b/tools/testing/selftests/bpf/progs/fentry_test.c
index 5f645fd..d4247d6 100644
--- a/tools/testing/selftests/bpf/progs/fentry_test.c
+++ b/tools/testing/selftests/bpf/progs/fentry_test.c
@@ -64,7 +64,7 @@ struct bpf_fentry_test_t {
SEC("fentry/bpf_fentry_test7")
int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
{
- if (arg == 0)
+ if (!arg)
test7_result = 1;
return 0;
}
@@ -73,7 +73,7 @@ int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
SEC("fentry/bpf_fentry_test8")
int BPF_PROG(test8, struct bpf_fentry_test_t *arg)
{
- if (arg->a == 0)
+ if (!arg->a)
test8_result = 1;
return 0;
}
--
1.8.3.1

2021-03-18 16:27:15

by Daniel Borkmann

Subject: Re: [PATCH] selftests/bpf: fix warning comparing pointer to 0

On 3/18/21 2:55 AM, Jiapeng Chong wrote:
> Fix the following coccicheck warning:
>
> ./tools/testing/selftests/bpf/progs/fentry_test.c:76:15-16: WARNING
> comparing pointer to 0.
>
> Reported-by: Abaci Robot <[email protected]>
> Signed-off-by: Jiapeng Chong <[email protected]>
> ---
> tools/testing/selftests/bpf/progs/fentry_test.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/progs/fentry_test.c b/tools/testing/selftests/bpf/progs/fentry_test.c
> index 5f645fd..d4247d6 100644
> --- a/tools/testing/selftests/bpf/progs/fentry_test.c
> +++ b/tools/testing/selftests/bpf/progs/fentry_test.c
> @@ -64,7 +64,7 @@ struct bpf_fentry_test_t {
> SEC("fentry/bpf_fentry_test7")
> int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
> {
> - if (arg == 0)
> + if (!arg)
> test7_result = 1;
> return 0;
> }
> @@ -73,7 +73,7 @@ int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
> SEC("fentry/bpf_fentry_test8")
> int BPF_PROG(test8, struct bpf_fentry_test_t *arg)
> {
> - if (arg->a == 0)
> + if (!arg->a)
> test8_result = 1;
> return 0;
> }
>

This doesn't apply. Please rebase against bpf-next tree, and also make sure to
squash any other such patches into a single one.

2021-04-22 08:12:06

by Jiapeng Chong

Subject: Re: [PATCH] selftests/bpf: fix warning comparing pointer to 0

On 2021/3/19 0:23, Daniel Borkmann wrote:
> On 3/18/21 2:55 AM, Jiapeng Chong wrote:
>> Fix the following coccicheck warning:
>>
>> ./tools/testing/selftests/bpf/progs/fentry_test.c:76:15-16: WARNING
>> comparing pointer to 0.
>>
>> Reported-by: Abaci Robot <[email protected]>
>> Signed-off-by: Jiapeng Chong <[email protected]>
>> ---
>>   tools/testing/selftests/bpf/progs/fentry_test.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/tools/testing/selftests/bpf/progs/fentry_test.c
>> b/tools/testing/selftests/bpf/progs/fentry_test.c
>> index 5f645fd..d4247d6 100644
>> --- a/tools/testing/selftests/bpf/progs/fentry_test.c
>> +++ b/tools/testing/selftests/bpf/progs/fentry_test.c
>> @@ -64,7 +64,7 @@ struct bpf_fentry_test_t {
>>   SEC("fentry/bpf_fentry_test7")
>>   int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
>>   {
>> -    if (arg == 0)
>> +    if (!arg)
>>           test7_result = 1;
>>       return 0;
>>   }
>> @@ -73,7 +73,7 @@ int BPF_PROG(test7, struct bpf_fentry_test_t *arg)
>>   SEC("fentry/bpf_fentry_test8")
>>   int BPF_PROG(test8, struct bpf_fentry_test_t *arg)
>>   {
>> -    if (arg->a == 0)
>> +    if (!arg->a)
>>           test8_result = 1;
>>       return 0;
>>   }
>>
>
> This doesn't apply. Please rebase against bpf-next tree, and also make
> sure to
> squash any other such patches into a single one.

OK, I'll submit it to the latest branch bpf-next tree later.