Hi Manuel, [auto build test ERROR on linus/master] [also build test ERROR on v4.9-rc5 next-20161116] [cannot apply to v4.1] [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/Manuel-Sch-lling/console-Add-persistent-scrollback-buffers-for-all-VGA-console/20161117-051658 config: x86_64-randconfig-x015-201646 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/video/console/vgacon.c: In function 'vgacon_scrolldelta': >> drivers/video/console/vgacon.c:332:14: error: 'vgacon_scrollback' undeclared (first use in this function) if (start > vgacon_scrollback.cnt) ^~~~~~~~~~~~~~~~~ drivers/video/console/vgacon.c:332:14: note: each undeclared identifier is reported only once for each function it appears in vim +/vgacon_scrollback +332 drivers/video/console/vgacon.c 25056ccd Manuel Schölling 2016-11-16 326 start = vgacon_scrollback_cur->cur + lines; 15bdab95 Antonino A. Daplas 2006-03-27 327 end = start + abs(lines); 15bdab95 Antonino A. Daplas 2006-03-27 328 15bdab95 Antonino A. Daplas 2006-03-27 329 if (start < 0) 15bdab95 Antonino A. Daplas 2006-03-27 330 start = 0; 15bdab95 Antonino A. Daplas 2006-03-27 331 18add6b3 Manuel Schölling 2016-11-16 @332 if (start > vgacon_scrollback.cnt) 18add6b3 Manuel Schölling 2016-11-16 333 start = vgacon_scrollback.cnt; 15bdab95 Antonino A. Daplas 2006-03-27 334 15bdab95 Antonino A. Daplas 2006-03-27 335 if (end < 0) :::::: The code at line 332 was first introduced by commit :::::: 18add6b31208f391323fcaa95f80c4f61d7bdd06 console: Move scrollback data into its own struct :::::: TO: Manuel Schölling :::::: CC: 0day robot --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation