11:29 p.m.
Hi yangerkun,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: b966b5cf71790478be7726593d011cb085a97a94
commit: 20f93ea74f9c3274879328b9e1a2a85bc0cca5fd [6322/6900] dm dust: add interface to
list all badblocks
config: parisc-randconfig-r036-20200709 (attached as .config)
compiler: hppa-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=parisc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)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
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org