On Wed, Jun 11, 2025 at 9:42 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > Hi Jason, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on axboe-block/for-next] > [also build test WARNING on drm-i915/for-linux-next drm-i915/for-linux-next-fixes akpm-mm/mm-everything linus/master v6.16-rc1 next-20250610] > [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#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Jason-Xing/relayfs-abolish-prev_padding/20250610-085150 > base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next > patch link: https://lore.kernel.org/r/20250610004844.66688-5-kerneljasonxing%40gmail.com > patch subject: [PATCH v4 4/5] blktrace: use rbuf->stats.full as a drop indicator in relayfs > config: arc-randconfig-001-20250610 > compiler: arc-linux-gcc (GCC) 12.4.0 > reproduce (this is a W=1 build): > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202506102340.uo7QDaVk-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > kernel/trace/blktrace.c: In function 'blk_dropped_read': > >> kernel/trace/blktrace.c:421:39: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=] > 421 | snprintf(buf, sizeof(buf), "%lu\n", dropped); > | ~~^ ~~~~~~~ > | | | > | | size_t {aka unsigned int} > | long unsigned int > | %u Well, I suppose I will fix it in the re-spin after receiving more comments so that I don't need to quickly respond to this minor issue. Thanks, Jason > > > vim +421 kernel/trace/blktrace.c > > 413 > 414 static ssize_t blk_dropped_read(struct file *filp, char __user *buffer, > 415 size_t count, loff_t *ppos) > 416 { > 417 struct blk_trace *bt = filp->private_data; > 418 size_t dropped = relay_stats(bt->rchan, RELAY_STATS_BUF_FULL); > 419 char buf[16]; > 420 > > 421 snprintf(buf, sizeof(buf), "%lu\n", dropped); > 422 > 423 return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf)); > 424 } > 425 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
