* [PATCH] kcsan: fix printk format string
@ 2021-04-21 13:50 Arnd Bergmann
2021-04-21 13:59 ` Marco Elver
2021-04-23 6:52 ` [tip: locking/core] kcsan: Fix " tip-bot2 for Arnd Bergmann
0 siblings, 2 replies; 4+ messages in thread
From: Arnd Bergmann @ 2021-04-21 13:50 UTC (permalink / raw)
To: Marco Elver, Paul E. McKenney, David Gow
Cc: Arnd Bergmann, Dmitry Vyukov, Peter Zijlstra (Intel),
kasan-dev, linux-kernel
From: Arnd Bergmann <arnd@arndb.de>
Printing a 'long' variable using the '%d' format string is wrong
and causes a warning from gcc:
kernel/kcsan/kcsan_test.c: In function 'nthreads_gen_params':
include/linux/kern_levels.h:5:25: error: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Werror=format=]
Use the appropriate format modifier.
Fixes: f6a149140321 ("kcsan: Switch to KUNIT_CASE_PARAM for parameterized tests")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
kernel/kcsan/kcsan_test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c
index 9247009295b5..a29e9b1a30c8 100644
--- a/kernel/kcsan/kcsan_test.c
+++ b/kernel/kcsan/kcsan_test.c
@@ -981,7 +981,7 @@ static const void *nthreads_gen_params(const void *prev, char *desc)
const long min_required_cpus = 2 + min_unused_cpus;
if (num_online_cpus() < min_required_cpus) {
- pr_err_once("Too few online CPUs (%u < %d) for test\n",
+ pr_err_once("Too few online CPUs (%u < %ld) for test\n",
num_online_cpus(), min_required_cpus);
nthreads = 0;
} else if (nthreads >= num_online_cpus() - min_unused_cpus) {
--
2.29.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] kcsan: fix printk format string
2021-04-21 13:50 [PATCH] kcsan: fix printk format string Arnd Bergmann
@ 2021-04-21 13:59 ` Marco Elver
2021-04-21 14:53 ` Paul E. McKenney
2021-04-23 6:52 ` [tip: locking/core] kcsan: Fix " tip-bot2 for Arnd Bergmann
1 sibling, 1 reply; 4+ messages in thread
From: Marco Elver @ 2021-04-21 13:59 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Paul E. McKenney, David Gow, Arnd Bergmann, Dmitry Vyukov,
Peter Zijlstra (Intel),
kasan-dev, LKML, Ingo Molnar
On Wed, 21 Apr 2021 at 15:51, Arnd Bergmann <arnd@kernel.org> wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> Printing a 'long' variable using the '%d' format string is wrong
> and causes a warning from gcc:
>
> kernel/kcsan/kcsan_test.c: In function 'nthreads_gen_params':
> include/linux/kern_levels.h:5:25: error: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Werror=format=]
>
> Use the appropriate format modifier.
>
> Fixes: f6a149140321 ("kcsan: Switch to KUNIT_CASE_PARAM for parameterized tests")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Marco Elver <elver@google.com>
Thank you!
Normally KCSAN patches go through -rcu, but perhaps in this instance
it should be picked up into -tip/locking/core directly, so it goes out
with "kcsan: Switch to KUNIT_CASE_PARAM for parameterized tests".
Paul, Ingo, do you have a preference?
Thanks,
-- Marco
> ---
> kernel/kcsan/kcsan_test.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c
> index 9247009295b5..a29e9b1a30c8 100644
> --- a/kernel/kcsan/kcsan_test.c
> +++ b/kernel/kcsan/kcsan_test.c
> @@ -981,7 +981,7 @@ static const void *nthreads_gen_params(const void *prev, char *desc)
> const long min_required_cpus = 2 + min_unused_cpus;
>
> if (num_online_cpus() < min_required_cpus) {
> - pr_err_once("Too few online CPUs (%u < %d) for test\n",
> + pr_err_once("Too few online CPUs (%u < %ld) for test\n",
> num_online_cpus(), min_required_cpus);
> nthreads = 0;
> } else if (nthreads >= num_online_cpus() - min_unused_cpus) {
> --
> 2.29.2
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] kcsan: fix printk format string
2021-04-21 13:59 ` Marco Elver
@ 2021-04-21 14:53 ` Paul E. McKenney
0 siblings, 0 replies; 4+ messages in thread
From: Paul E. McKenney @ 2021-04-21 14:53 UTC (permalink / raw)
To: Marco Elver
Cc: Arnd Bergmann, David Gow, Arnd Bergmann, Dmitry Vyukov,
Peter Zijlstra (Intel),
kasan-dev, LKML, Ingo Molnar
On Wed, Apr 21, 2021 at 03:59:40PM +0200, Marco Elver wrote:
> On Wed, 21 Apr 2021 at 15:51, Arnd Bergmann <arnd@kernel.org> wrote:
> > From: Arnd Bergmann <arnd@arndb.de>
> >
> > Printing a 'long' variable using the '%d' format string is wrong
> > and causes a warning from gcc:
> >
> > kernel/kcsan/kcsan_test.c: In function 'nthreads_gen_params':
> > include/linux/kern_levels.h:5:25: error: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Werror=format=]
> >
> > Use the appropriate format modifier.
> >
> > Fixes: f6a149140321 ("kcsan: Switch to KUNIT_CASE_PARAM for parameterized tests")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>
> Reviewed-by: Marco Elver <elver@google.com>
>
> Thank you!
>
> Normally KCSAN patches go through -rcu, but perhaps in this instance
> it should be picked up into -tip/locking/core directly, so it goes out
> with "kcsan: Switch to KUNIT_CASE_PARAM for parameterized tests".
> Paul, Ingo, do you have a preference?
I am good either way. I have queued it for the moment, but will remove
it if Ingo takes it.
Acked-by: Paul E. McKenney <paulmck@kernel.org>
> Thanks,
> -- Marco
>
> > ---
> > kernel/kcsan/kcsan_test.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c
> > index 9247009295b5..a29e9b1a30c8 100644
> > --- a/kernel/kcsan/kcsan_test.c
> > +++ b/kernel/kcsan/kcsan_test.c
> > @@ -981,7 +981,7 @@ static const void *nthreads_gen_params(const void *prev, char *desc)
> > const long min_required_cpus = 2 + min_unused_cpus;
> >
> > if (num_online_cpus() < min_required_cpus) {
> > - pr_err_once("Too few online CPUs (%u < %d) for test\n",
> > + pr_err_once("Too few online CPUs (%u < %ld) for test\n",
> > num_online_cpus(), min_required_cpus);
> > nthreads = 0;
> > } else if (nthreads >= num_online_cpus() - min_unused_cpus) {
> > --
> > 2.29.2
^ permalink raw reply [flat|nested] 4+ messages in thread
* [tip: locking/core] kcsan: Fix printk format string
2021-04-21 13:50 [PATCH] kcsan: fix printk format string Arnd Bergmann
2021-04-21 13:59 ` Marco Elver
@ 2021-04-23 6:52 ` tip-bot2 for Arnd Bergmann
1 sibling, 0 replies; 4+ messages in thread
From: tip-bot2 for Arnd Bergmann @ 2021-04-23 6:52 UTC (permalink / raw)
To: linux-tip-commits
Cc: Arnd Bergmann, Peter Zijlstra (Intel),
Marco Elver, Paul E. McKenney, x86, linux-kernel
The following commit has been merged into the locking/core branch of tip:
Commit-ID: f4abe9967c6fdb511ee567e129a014b60945ab93
Gitweb: https://git.kernel.org/tip/f4abe9967c6fdb511ee567e129a014b60945ab93
Author: Arnd Bergmann <arnd@arndb.de>
AuthorDate: Wed, 21 Apr 2021 15:50:38 +02:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Thu, 22 Apr 2021 14:36:03 +02:00
kcsan: Fix printk format string
Printing a 'long' variable using the '%d' format string is wrong
and causes a warning from gcc:
kernel/kcsan/kcsan_test.c: In function 'nthreads_gen_params':
include/linux/kern_levels.h:5:25: error: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Werror=format=]
Use the appropriate format modifier.
Fixes: f6a149140321 ("kcsan: Switch to KUNIT_CASE_PARAM for parameterized tests")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Marco Elver <elver@google.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lkml.kernel.org/r/20210421135059.3371701-1-arnd@kernel.org
---
kernel/kcsan/kcsan_test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c
index b71751f..8bcffbd 100644
--- a/kernel/kcsan/kcsan_test.c
+++ b/kernel/kcsan/kcsan_test.c
@@ -984,7 +984,7 @@ static const void *nthreads_gen_params(const void *prev, char *desc)
const long min_required_cpus = 2 + min_unused_cpus;
if (num_online_cpus() < min_required_cpus) {
- pr_err_once("Too few online CPUs (%u < %d) for test\n",
+ pr_err_once("Too few online CPUs (%u < %ld) for test\n",
num_online_cpus(), min_required_cpus);
nthreads = 0;
} else if (nthreads >= num_online_cpus() - min_unused_cpus) {
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-04-23 6:53 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-04-21 13:50 [PATCH] kcsan: fix printk format string Arnd Bergmann
2021-04-21 13:59 ` Marco Elver
2021-04-21 14:53 ` Paul E. McKenney
2021-04-23 6:52 ` [tip: locking/core] kcsan: Fix " tip-bot2 for Arnd Bergmann
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.