tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel head: d1598a736155d728b8093eea08478b4c42ffbe72 commit: d6b07e2c4ef107c86c64d2a7d228a41c70fb9361 [47/69] synclink_gt: crap config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commi... git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git git fetch --no-tags jirislaby devel git checkout d6b07e2c4ef107c86c64d2a7d228a41c70fb9361 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 576 | static void ldisc_receive_buf(struct tty_struct *tty,XX | ^~ drivers/tty/synclink_gt.c: In function 'rx_get_frame': 4663 | ldisc_receive_buf(tty, info->tmp_rbuf, info->flag_buf, framesize); | ^~~~~~~~~~~~~~~~~ | tty_ldisc_receive_buf cc1: all warnings being treated as errors vim +/XX +576 drivers/tty/synclink_gt.c 567 568 /* 569 * line discipline callback wrappers 570 * 571 * The wrappers maintain line discipline references 572 * while calling into the line discipline. 573 * 574 * ldisc_receive_buf - pass receive data to line discipline 575 */ 577 const __u8 *data, char *flags, int count) 578 { 579 struct tty_ldisc *ld; 580 if (!tty) 581 return; 582 ld = tty_ldisc_ref(tty); 583 if (ld) { 584 if (ld->ops->receive_buf) 585 ld->ops->receive_buf(tty, data, flags, count); 586 tty_ldisc_deref(ld); 587 } 588 } 589 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org