[dpdk-dev] [PATCH] eal: fix log message print for regex

[dpdk-dev] [PATCH] eal: fix log message print for regex

[Sunil Kumar Kori]

If user passes log-level eal parameter to enable log level based on regex
then in case of error message is being printed for pattern match instead of
regex. Following is the warning message thrown:

Compiling C object 'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
In function ‘eal_parse_log_level’,
   inlined from ‘eal_parse_common_option’ at ../lib/librte_eal/common/eal_common_options.c:1418:7:
../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
 1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1054 |     pattern, priority);
      |     ~~~~~~~~~~~~~~~~~~

Fixes: 7f0bb634a140 ("log: add ability to match log type with globbing")

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
 lib/librte_eal/common/eal_common_options.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 75974dd5b..525e51e7d 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -1046,7 +1046,7 @@ eal_parse_log_level(const char *arg)
 	if (regex) {
 		if (rte_log_set_level_regexp(regex, priority) < 0) {
 			fprintf(stderr, "cannot set log level %s,%d\n",
-				pattern, priority);
+				regex, priority);
 			goto fail;
 		}
 		if (rte_log_save_regexp(regex, priority) < 0)
-- 
2.17.1

Re: [dpdk-dev] [dpdk-stable] [PATCH] eal: fix log message print for regex

[David Marchand]

On Thu, Feb 27, 2020 at 9:25 AM Sunil Kumar Kori <skori@marvell.com> wrote:
>
> If user passes log-level eal parameter to enable log level based on regex
> then in case of error message is being printed for pattern match instead of
> regex. Following is the warning message thrown:
>
> Compiling C object 'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
> In function ‘eal_parse_log_level’,
>    inlined from ‘eal_parse_common_option’ at ../lib/librte_eal/common/eal_common_options.c:1418:7:
> ../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
>  1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
>       |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  1054 |     pattern, priority);
>       |     ~~~~~~~~~~~~~~~~~~
>

Good catch.

Just to understand, how did you catch it?
Extra cflags? specific compiler?


> Fixes: 7f0bb634a140 ("log: add ability to match log type with globbing")

Missing Cc: stable.


>
> Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
> ---
>  lib/librte_eal/common/eal_common_options.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
> index 75974dd5b..525e51e7d 100644
> --- a/lib/librte_eal/common/eal_common_options.c
> +++ b/lib/librte_eal/common/eal_common_options.c
> @@ -1046,7 +1046,7 @@ eal_parse_log_level(const char *arg)
>         if (regex) {
>                 if (rte_log_set_level_regexp(regex, priority) < 0) {
>                         fprintf(stderr, "cannot set log level %s,%d\n",
> -                               pattern, priority);
> +                               regex, priority);
>                         goto fail;
>                 }
>                 if (rte_log_save_regexp(regex, priority) < 0)
> --
> 2.17.1
>

Acked-by: David Marchand <david.marchand@redhat.com>



--
David Marchand

Re: [dpdk-dev] [EXT] Re: [dpdk-stable] [PATCH] eal: fix log message print for regex

[Sunil Kumar Kori]

Hello David,

We have two build machine with two different version of GCC. 
So the issue is reported on one setup only not on the other one.
It looks like because of different version of GCC, this warning is caught. 

Regards
Sunil Kumar Kori

>-----Original Message-----
>From: David Marchand <david.marchand@redhat.com>
>Sent: Thursday, February 27, 2020 4:28 PM
>To: Sunil Kumar Kori <skori@marvell.com>
>Cc: Olivier Matz <olivier.matz@6wind.com>; Thomas Monjalon
><thomas@monjalon.net>; dev <dev@dpdk.org>; dpdk stable
><stable@dpdk.org>
>Subject: [EXT] Re: [dpdk-stable] [PATCH] eal: fix log message print for regex
>
>External Email
>
>----------------------------------------------------------------------
>On Thu, Feb 27, 2020 at 9:25 AM Sunil Kumar Kori <skori@marvell.com>
>wrote:
>>
>> If user passes log-level eal parameter to enable log level based on
>> regex then in case of error message is being printed for pattern match
>> instead of regex. Following is the warning message thrown:
>>
>> Compiling C object
>'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
>> In function ‘eal_parse_log_level’,
>>    inlined from ‘eal_parse_common_option’ at
>../lib/librte_eal/common/eal_common_options.c:1418:7:
>> ../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’
>directive argument is null [-Wformat-overflow=]
>>  1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
>>       |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>  1054 |     pattern, priority);
>>       |     ~~~~~~~~~~~~~~~~~~
>>
>
>Good catch.
>
>Just to understand, how did you catch it?
>Extra cflags? specific compiler?
>
>
>> Fixes: 7f0bb634a140 ("log: add ability to match log type with
>> globbing")
>
>Missing Cc: stable.
>
>
>>
>> Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
>> ---
>>  lib/librte_eal/common/eal_common_options.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/lib/librte_eal/common/eal_common_options.c
>> b/lib/librte_eal/common/eal_common_options.c
>> index 75974dd5b..525e51e7d 100644
>> --- a/lib/librte_eal/common/eal_common_options.c
>> +++ b/lib/librte_eal/common/eal_common_options.c
>> @@ -1046,7 +1046,7 @@ eal_parse_log_level(const char *arg)
>>         if (regex) {
>>                 if (rte_log_set_level_regexp(regex, priority) < 0) {
>>                         fprintf(stderr, "cannot set log level %s,%d\n",
>> -                               pattern, priority);
>> +                               regex, priority);
>>                         goto fail;
>>                 }
>>                 if (rte_log_save_regexp(regex, priority) < 0)
>> --
>> 2.17.1
>>
>
>Acked-by: David Marchand <david.marchand@redhat.com>
>
>
>
>--
>David Marchand

Re: [dpdk-dev] [EXT] Re: [dpdk-stable] [PATCH] eal: fix log message print for regex

[David Marchand]

On Thu, Feb 27, 2020 at 12:03 PM Sunil Kumar Kori <skori@marvell.com> wrote:
> We have two build machine with two different version of GCC.
> So the issue is reported on one setup only not on the other one.
> It looks like because of different version of GCC, this warning is caught.

f30 gcc 9 with -Wformat-overflow (tried level 1 and 2) does not catch this.


-- 
David Marchand

[dpdk-dev] [PATCH v2 1/1] eal: fix log message print for regex

[Sunil Kumar Kori]

If user passes log-level eal parameter to enable log level based on regex
then in case of error message is being printed for pattern match instead of
regex. Following is the warning message thrown:

Compiling C object 'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
In function ‘eal_parse_log_level’,
   inlined from ‘eal_parse_common_option’ at ../lib/librte_eal/common/eal_common_options.c:1418:7:
../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
 1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1054 |     pattern, priority);
      |     ~~~~~~~~~~~~~~~~~~

Fixes: 7f0bb634a140 ("log: add ability to match log type with globbing")
Cc: stable@dpdk.org

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Acked-by: David Marchand <david.marchand@redhat.com>
---
 lib/librte_eal/common/eal_common_options.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 75974dd5b..525e51e7d 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -1046,7 +1046,7 @@ eal_parse_log_level(const char *arg)
 	if (regex) {
 		if (rte_log_set_level_regexp(regex, priority) < 0) {
 			fprintf(stderr, "cannot set log level %s,%d\n",
-				pattern, priority);
+				regex, priority);
 			goto fail;
 		}
 		if (rte_log_save_regexp(regex, priority) < 0)
-- 
2.17.1

[dpdk-dev] [PATCH v2 1/1] eal: fix log message print for regex

[Sunil Kumar Kori]

If user passes log-level eal parameter to enable log level based on regex
then in case of error message is being printed for pattern match instead of
regex. Following is the warning message thrown:

Compiling C object 'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
In function ‘eal_parse_log_level’,
   inlined from ‘eal_parse_common_option’ at ../lib/librte_eal/common/eal_common_options.c:1418:7:
../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
 1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1054 |     pattern, priority);
      |     ~~~~~~~~~~~~~~~~~~

Fixes: 7f0bb634a140 ("log: add ability to match log type with globbing")
Cc: stable@dpdk.org

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Acked-by: David Marchand <david.marchand@redhat.com>
---
v2:
 - Updated Cc: stable@dpdk.org in commit message

 lib/librte_eal/common/eal_common_options.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 75974dd5b..525e51e7d 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -1046,7 +1046,7 @@ eal_parse_log_level(const char *arg)
 	if (regex) {
 		if (rte_log_set_level_regexp(regex, priority) < 0) {
 			fprintf(stderr, "cannot set log level %s,%d\n",
-				pattern, priority);
+				regex, priority);
 			goto fail;
 		}
 		if (rte_log_save_regexp(regex, priority) < 0)
-- 
2.17.1

Re: [dpdk-dev] [PATCH v2 1/1] eal: fix log message print for regex

[Jerin Jacob]

On Mon, Mar 9, 2020 at 11:47 AM Sunil Kumar Kori <skori@marvell.com> wrote:
>
> If user passes log-level eal parameter to enable log level based on regex
> then in case of error message is being printed for pattern match instead of
> regex. Following is the warning message thrown:
>
> Compiling C object 'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
> In function ‘eal_parse_log_level’,
>    inlined from ‘eal_parse_common_option’ at ../lib/librte_eal/common/eal_common_options.c:1418:7:
> ../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
>  1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
>       |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  1054 |     pattern, priority);
>       |     ~~~~~~~~~~~~~~~~~~
>
> Fixes: 7f0bb634a140 ("log: add ability to match log type with globbing")
> Cc: stable@dpdk.org
>
> Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
> Acked-by: David Marchand <david.marchand@redhat.com>

Reviewed-by: Jerin Jacob <jerinj@marvell.com>


> ---
> v2:
>  - Updated Cc: stable@dpdk.org in commit message
>
>  lib/librte_eal/common/eal_common_options.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
> index 75974dd5b..525e51e7d 100644
> --- a/lib/librte_eal/common/eal_common_options.c
> +++ b/lib/librte_eal/common/eal_common_options.c
> @@ -1046,7 +1046,7 @@ eal_parse_log_level(const char *arg)
>         if (regex) {
>                 if (rte_log_set_level_regexp(regex, priority) < 0) {
>                         fprintf(stderr, "cannot set log level %s,%d\n",
> -                               pattern, priority);
> +                               regex, priority);
>                         goto fail;
>                 }
>                 if (rte_log_save_regexp(regex, priority) < 0)
> --
> 2.17.1
>

Re: [dpdk-dev] [PATCH v2 1/1] eal: fix log message print for regex

[David Marchand]

On Mon, Mar 9, 2020 at 8:08 AM Jerin Jacob <jerinjacobk@gmail.com> wrote:
>
> On Mon, Mar 9, 2020 at 11:47 AM Sunil Kumar Kori <skori@marvell.com> wrote:
> >
> > If user passes log-level eal parameter to enable log level based on regex
> > then in case of error message is being printed for pattern match instead of
> > regex. Following is the warning message thrown:
> >
> > Compiling C object 'lib/76b5a35@@rte_eal@sta/librte_eal_common_eal_common_options.c.o'.
> > In function ‘eal_parse_log_level’,
> >    inlined from ‘eal_parse_common_option’ at ../lib/librte_eal/common/eal_common_options.c:1418:7:
> > ../lib/librte_eal/common/eal_common_options.c:1053:4: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
> >  1053 |    fprintf(stderr, "cannot set log level %s,%d\n",
> >       |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >  1054 |     pattern, priority);
> >       |     ~~~~~~~~~~~~~~~~~~
> >
> > Fixes: 7f0bb634a140 ("log: add ability to match log type with globbing")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
> > Acked-by: David Marchand <david.marchand@redhat.com>
>
> Reviewed-by: Jerin Jacob <jerinj@marvell.com>

I did not reproduce this with this format-overflow flag...
Anyway, applied.


-- 
David Marchand