From: kernel test robot <lkp@intel.com>
To: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>,
wim@linux-watchdog.org, linux@roeck-us.net, shawnguo@kernel.org
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
linux-watchdog@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, grzegorz.jaszczyk@linaro.org
Subject: Re: [PATCH 1/2] watchdog: introduce watchdog_dev_suspend/resume
Date: Thu, 17 Jun 2021 07:21:53 +0800 [thread overview]
Message-ID: <202106170726.zhIcbJGv-lkp@intel.com> (raw)
In-Reply-To: <20210615123904.2568052-2-grzegorz.jaszczyk@linaro.org>
[-- Attachment #1: Type: text/plain, Size: 5886 bytes --]
Hi Grzegorz,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on hwmon/hwmon-next]
[also build test WARNING on soc/for-next linus/master v5.13-rc6 next-20210616]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Grzegorz-Jaszczyk/introduce-watchdog_dev_suspend-resume/20210616-201447
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: arm64-randconfig-r022-20210615 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/0day-ci/linux/commit/71dadcad8da1862c1205b19ddf4279d494e57545
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Grzegorz-Jaszczyk/introduce-watchdog_dev_suspend-resume/20210616-201447
git checkout 71dadcad8da1862c1205b19ddf4279d494e57545
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/watchdog/watchdog_dev.c:1232:2: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/watchdog_dev.c:1236:6: note: uninitialized use occurs here
if (ret)
^~~
include/linux/compiler.h:56:47: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~
include/linux/compiler.h:58:52: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~
drivers/watchdog/watchdog_dev.c:1232:2: note: remove the 'if' if its condition is always true
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/watchdog/watchdog_dev.c:1225:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
drivers/watchdog/watchdog_dev.c:1263:2: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/watchdog_dev.c:1267:9: note: uninitialized use occurs here
return ret;
^~~
drivers/watchdog/watchdog_dev.c:1263:2: note: remove the 'if' if its condition is always true
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/watchdog/watchdog_dev.c:1253:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
2 warnings generated.
vim +1232 drivers/watchdog/watchdog_dev.c
1221
1222 int watchdog_dev_suspend(struct watchdog_device *wdd)
1223 {
1224 struct watchdog_core_data *wd_data = wdd->wd_data;
1225 int ret;
1226
1227 if (!wdd->wd_data)
1228 return -ENODEV;
1229
1230 /* ping for the last time before suspend */
1231 mutex_lock(&wd_data->lock);
> 1232 if (watchdog_worker_should_ping(wd_data))
1233 ret = __watchdog_ping(wd_data->wdd);
1234 mutex_unlock(&wd_data->lock);
1235
1236 if (ret)
1237 return ret;
1238
1239 /*
1240 * make sure that watchdog worker will not kick in when the wdog is
1241 * suspended
1242 */
1243 hrtimer_cancel(&wd_data->timer);
1244 kthread_cancel_work_sync(&wd_data->work);
1245
1246 return 0;
1247 }
1248 EXPORT_SYMBOL_GPL(watchdog_dev_suspend);
1249
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 42627 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: kernel test robot <lkp@intel.com>
To: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>,
wim@linux-watchdog.org, linux@roeck-us.net, shawnguo@kernel.org
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
linux-watchdog@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, grzegorz.jaszczyk@linaro.org
Subject: Re: [PATCH 1/2] watchdog: introduce watchdog_dev_suspend/resume
Date: Thu, 17 Jun 2021 07:21:53 +0800 [thread overview]
Message-ID: <202106170726.zhIcbJGv-lkp@intel.com> (raw)
In-Reply-To: <20210615123904.2568052-2-grzegorz.jaszczyk@linaro.org>
[-- Attachment #1: Type: text/plain, Size: 5886 bytes --]
Hi Grzegorz,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on hwmon/hwmon-next]
[also build test WARNING on soc/for-next linus/master v5.13-rc6 next-20210616]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Grzegorz-Jaszczyk/introduce-watchdog_dev_suspend-resume/20210616-201447
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: arm64-randconfig-r022-20210615 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/0day-ci/linux/commit/71dadcad8da1862c1205b19ddf4279d494e57545
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Grzegorz-Jaszczyk/introduce-watchdog_dev_suspend-resume/20210616-201447
git checkout 71dadcad8da1862c1205b19ddf4279d494e57545
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/watchdog/watchdog_dev.c:1232:2: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/watchdog_dev.c:1236:6: note: uninitialized use occurs here
if (ret)
^~~
include/linux/compiler.h:56:47: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~
include/linux/compiler.h:58:52: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~
drivers/watchdog/watchdog_dev.c:1232:2: note: remove the 'if' if its condition is always true
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/watchdog/watchdog_dev.c:1225:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
drivers/watchdog/watchdog_dev.c:1263:2: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/watchdog_dev.c:1267:9: note: uninitialized use occurs here
return ret;
^~~
drivers/watchdog/watchdog_dev.c:1263:2: note: remove the 'if' if its condition is always true
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/watchdog/watchdog_dev.c:1253:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
2 warnings generated.
vim +1232 drivers/watchdog/watchdog_dev.c
1221
1222 int watchdog_dev_suspend(struct watchdog_device *wdd)
1223 {
1224 struct watchdog_core_data *wd_data = wdd->wd_data;
1225 int ret;
1226
1227 if (!wdd->wd_data)
1228 return -ENODEV;
1229
1230 /* ping for the last time before suspend */
1231 mutex_lock(&wd_data->lock);
> 1232 if (watchdog_worker_should_ping(wd_data))
1233 ret = __watchdog_ping(wd_data->wdd);
1234 mutex_unlock(&wd_data->lock);
1235
1236 if (ret)
1237 return ret;
1238
1239 /*
1240 * make sure that watchdog worker will not kick in when the wdog is
1241 * suspended
1242 */
1243 hrtimer_cancel(&wd_data->timer);
1244 kthread_cancel_work_sync(&wd_data->work);
1245
1246 return 0;
1247 }
1248 EXPORT_SYMBOL_GPL(watchdog_dev_suspend);
1249
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 42627 bytes --]
[-- Attachment #3: Type: text/plain, Size: 176 bytes --]
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: kernel test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: Re: [PATCH 1/2] watchdog: introduce watchdog_dev_suspend/resume
Date: Thu, 17 Jun 2021 07:21:53 +0800 [thread overview]
Message-ID: <202106170726.zhIcbJGv-lkp@intel.com> (raw)
In-Reply-To: <20210615123904.2568052-2-grzegorz.jaszczyk@linaro.org>
[-- Attachment #1: Type: text/plain, Size: 6007 bytes --]
Hi Grzegorz,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on hwmon/hwmon-next]
[also build test WARNING on soc/for-next linus/master v5.13-rc6 next-20210616]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Grzegorz-Jaszczyk/introduce-watchdog_dev_suspend-resume/20210616-201447
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: arm64-randconfig-r022-20210615 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/0day-ci/linux/commit/71dadcad8da1862c1205b19ddf4279d494e57545
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Grzegorz-Jaszczyk/introduce-watchdog_dev_suspend-resume/20210616-201447
git checkout 71dadcad8da1862c1205b19ddf4279d494e57545
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/watchdog/watchdog_dev.c:1232:2: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/watchdog_dev.c:1236:6: note: uninitialized use occurs here
if (ret)
^~~
include/linux/compiler.h:56:47: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~
include/linux/compiler.h:58:52: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~
drivers/watchdog/watchdog_dev.c:1232:2: note: remove the 'if' if its condition is always true
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/watchdog/watchdog_dev.c:1225:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
drivers/watchdog/watchdog_dev.c:1263:2: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:28: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var'
#define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/watchdog/watchdog_dev.c:1267:9: note: uninitialized use occurs here
return ret;
^~~
drivers/watchdog/watchdog_dev.c:1263:2: note: remove the 'if' if its condition is always true
if (watchdog_worker_should_ping(wd_data))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:56:23: note: expanded from macro 'if'
#define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
^
drivers/watchdog/watchdog_dev.c:1253:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
2 warnings generated.
vim +1232 drivers/watchdog/watchdog_dev.c
1221
1222 int watchdog_dev_suspend(struct watchdog_device *wdd)
1223 {
1224 struct watchdog_core_data *wd_data = wdd->wd_data;
1225 int ret;
1226
1227 if (!wdd->wd_data)
1228 return -ENODEV;
1229
1230 /* ping for the last time before suspend */
1231 mutex_lock(&wd_data->lock);
> 1232 if (watchdog_worker_should_ping(wd_data))
1233 ret = __watchdog_ping(wd_data->wdd);
1234 mutex_unlock(&wd_data->lock);
1235
1236 if (ret)
1237 return ret;
1238
1239 /*
1240 * make sure that watchdog worker will not kick in when the wdog is
1241 * suspended
1242 */
1243 hrtimer_cancel(&wd_data->timer);
1244 kthread_cancel_work_sync(&wd_data->work);
1245
1246 return 0;
1247 }
1248 EXPORT_SYMBOL_GPL(watchdog_dev_suspend);
1249
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 42627 bytes --]
next prev parent reply other threads:[~2021-06-16 23:22 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-15 12:39 [PATCH 0/2] introduce watchdog_dev_suspend/resume Grzegorz Jaszczyk
2021-06-15 12:39 ` Grzegorz Jaszczyk
2021-06-15 12:39 ` [PATCH 1/2] watchdog: " Grzegorz Jaszczyk
2021-06-15 12:39 ` Grzegorz Jaszczyk
2021-06-15 14:18 ` Guenter Roeck
2021-06-15 14:18 ` Guenter Roeck
2021-06-16 13:59 ` Grzegorz Jaszczyk
2021-06-16 13:59 ` Grzegorz Jaszczyk
2021-06-16 17:57 ` Guenter Roeck
2021-06-16 17:57 ` Guenter Roeck
2021-06-16 23:21 ` kernel test robot [this message]
2021-06-16 23:21 ` kernel test robot
2021-06-16 23:21 ` kernel test robot
2021-06-15 12:39 ` [PATCH 2/2] watchdog: imx2_wdg: notify wdog subsystem about wdog suspend/resume Grzegorz Jaszczyk
2021-06-15 12:39 ` Grzegorz Jaszczyk
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