Hi Tetsuo, I love your patch! Perhaps something to improve:
[auto build test WARNING on linus/master] [cannot apply to v5.3-rc4] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Tetsuo-Handa/dev-kmem-Debug-preadv-progress/20190813-044328 config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=sh If you fix the issue, kindly add following tag Reported-by: kbuild test robot <[email protected]> All warnings (new ones prefixed by >>): fs/read_write.c: In function 'do_loop_readv_writev': >> fs/read_write.c:715:48: warning: format '%ld' expects argument of type 'long >> int', but argument 2 has type 'size_t {aka unsigned int}' [-Wformat=] printk("do_loop_readv_writev: iter->count=%ld iovec.iov_len=%ld\n", iter->count, iovec.iov_len); ~~^ ~~~~~~~~~~~ %d >> fs/read_write.c:715:66: warning: format '%ld' expects argument of type 'long >> int', but argument 3 has type '__kernel_size_t {aka unsigned int}' >> [-Wformat=] printk("do_loop_readv_writev: iter->count=%ld iovec.iov_len=%ld\n", iter->count, iovec.iov_len); ~~^ ~~~~~~~~~~~~~ %d >> fs/read_write.c:725:39: warning: format '%ld' expects argument of type 'long >> int', but argument 2 has type 'ssize_t {aka int}' [-Wformat=] printk("do_loop_readv_writev: nr=%ld\n", nr); ~~^ %d vim +715 fs/read_write.c 699 700 /* Do it by hand, with file-ops */ 701 static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter, 702 loff_t *ppos, int type, rwf_t flags) 703 { 704 ssize_t ret = 0; 705 706 if (flags & ~RWF_HIPRI) 707 return -EOPNOTSUPP; 708 709 while (iov_iter_count(iter)) { 710 struct iovec iovec = iov_iter_iovec(iter); 711 ssize_t nr; 712 713 if (IS_ENABLED(CONFIG_DEBUG_AID_FOR_SYZBOT) && 714 fatal_signal_pending(current)) > 715 printk("do_loop_readv_writev: iter->count=%ld > iovec.iov_len=%ld\n", iter->count, iovec.iov_len); 716 if (type == READ) { 717 nr = filp->f_op->read(filp, iovec.iov_base, 718 iovec.iov_len, ppos); 719 } else { 720 nr = filp->f_op->write(filp, iovec.iov_base, 721 iovec.iov_len, ppos); 722 } 723 if (IS_ENABLED(CONFIG_DEBUG_AID_FOR_SYZBOT) && 724 fatal_signal_pending(current)) > 725 printk("do_loop_readv_writev: nr=%ld\n", nr); 726 727 if (nr < 0) { 728 if (!ret) 729 ret = nr; 730 break; 731 } 732 ret += nr; 733 if (nr != iovec.iov_len) 734 break; 735 iov_iter_advance(iter, nr); 736 } 737 738 return ret; 739 } 740 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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