* [dm:for-next 16/21] drivers/md/dm-dust.c:307:10: warning: zero-length gnu_printf format string
@ 2020-07-08 23:58 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2020-07-08 23:58 UTC (permalink / raw)
To: yangerkun; +Cc: dm-devel, kbuild-all, Mike Snitzer, Bryan Gurney
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next
head: d88c192d8c466e0d004f451091c409aa87c5ca89
commit: 20f93ea74f9c3274879328b9e1a2a85bc0cca5fd [16/21] dm dust: add interface to list all badblocks
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
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
git checkout 20f93ea74f9c3274879328b9e1a2a85bc0cca5fd
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
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 >>):
In file included from drivers/md/dm-dust.c:11:
drivers/md/dm-dust.c: In function 'dust_list_badblocks':
>> drivers/md/dm-dust.c:307:10: warning: zero-length gnu_printf format string [-Wformat-zero-length]
307 | DMEMIT("");
| ^~
include/linux/device-mapper.h:566:46: note: in definition of macro 'DMEMIT'
566 | 0 : scnprintf(result + sz, maxlen - sz, x))
| ^
vim +307 drivers/md/dm-dust.c
286
287 static int dust_list_badblocks(struct dust_device *dd, char *result, unsigned int maxlen,
288 unsigned int *sz_ptr)
289 {
290 unsigned long flags;
291 struct rb_root badblocklist;
292 struct rb_node *node;
293 struct badblock *bblk;
294 unsigned int sz = *sz_ptr;
295 unsigned long long num = 0;
296
297 spin_lock_irqsave(&dd->dust_lock, flags);
298 badblocklist = dd->badblocklist;
299 for (node = rb_first(&badblocklist); node; node = rb_next(node)) {
300 bblk = rb_entry(node, struct badblock, node);
301 DMEMIT("%llu\n", bblk->bb);
302 num++;
303 }
304
305 spin_unlock_irqrestore(&dd->dust_lock, flags);
306 if (!num)
> 307 DMEMIT("");
308
309 return 1;
310 }
311
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [dm:for-next 16/21] drivers/md/dm-dust.c:307:10: warning: zero-length gnu_printf format string
@ 2020-07-08 23:58 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2020-07-08 23:58 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 2302 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next
head: d88c192d8c466e0d004f451091c409aa87c5ca89
commit: 20f93ea74f9c3274879328b9e1a2a85bc0cca5fd [16/21] dm dust: add interface to list all badblocks
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
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
git checkout 20f93ea74f9c3274879328b9e1a2a85bc0cca5fd
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
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 >>):
In file included from drivers/md/dm-dust.c:11:
drivers/md/dm-dust.c: In function 'dust_list_badblocks':
>> drivers/md/dm-dust.c:307:10: warning: zero-length gnu_printf format string [-Wformat-zero-length]
307 | DMEMIT("");
| ^~
include/linux/device-mapper.h:566:46: note: in definition of macro 'DMEMIT'
566 | 0 : scnprintf(result + sz, maxlen - sz, x))
| ^
vim +307 drivers/md/dm-dust.c
286
287 static int dust_list_badblocks(struct dust_device *dd, char *result, unsigned int maxlen,
288 unsigned int *sz_ptr)
289 {
290 unsigned long flags;
291 struct rb_root badblocklist;
292 struct rb_node *node;
293 struct badblock *bblk;
294 unsigned int sz = *sz_ptr;
295 unsigned long long num = 0;
296
297 spin_lock_irqsave(&dd->dust_lock, flags);
298 badblocklist = dd->badblocklist;
299 for (node = rb_first(&badblocklist); node; node = rb_next(node)) {
300 bblk = rb_entry(node, struct badblock, node);
301 DMEMIT("%llu\n", bblk->bb);
302 num++;
303 }
304
305 spin_unlock_irqrestore(&dd->dust_lock, flags);
306 if (!num)
> 307 DMEMIT("");
308
309 return 1;
310 }
311
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-07-08 23:58 [dm:for-next 16/21] drivers/md/dm-dust.c:307:10: warning: zero-length gnu_printf format string kernel test robot
2020-07-08 23:58 ` kernel test robot
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