Hi Arnd, [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v4.12-rc6 next-20170623] [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/Arnd-Bergmann/bring-back-stack-frame-warning-with-KASAN/20170625-071646 base: git://linuxtv.org/media_tree.git master config: x86_64-randconfig-b0-06250903 (attached as .config) compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/tty/tty_buffer.c: In function '__tty_insert_flip_char': >> drivers/tty/tty_buffer.c:376: warning: unused variable 'flags' vim +/flags +376 drivers/tty/tty_buffer.c 360 return copied; 361 } 362 EXPORT_SYMBOL(tty_insert_flip_string_flags); 363 364 /** 365 * __tty_insert_flip_char - Add one character to the tty buffer 366 * @port: tty port 367 * @ch: character 368 * @flag: flag byte 369 * 370 * Queue a single byte to the tty buffering, with an optional flag. 371 * This is the slow path of tty_insert_flip_char. 372 */ 373 int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag) 374 { 375 struct tty_buffer *tb = port->buf.tail; > 376 int flags = (flag == TTY_NORMAL) ? TTYB_NORMAL : 0; 377 378 if (!tty_buffer_request_room(port, 1)) 379 return 0; 380 381 *flag_buf_ptr(tb, tb->used) = flag; 382 *char_buf_ptr(tb, tb->used++) = ch; 383 384 return 1; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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