tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-next head: 6731cb0ff06845c60d2c01880a885c7cad5a9356 commit: 58a8f3b69e071ba6c51a93f182e16184e2500c54 [86/91] mips: separate extable.h, switch module.h to it config: mips-lasat_defconfig (attached as .config) compiler: mipsel-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 58a8f3b69e071ba6c51a93f182e16184e2500c54 # save the attached .config to linux build tree make.cross ARCH=mips All errors (new ones prefixed by >>): arch/mips/lasat/picvue_proc.c: In function 'pvc_line_proc_write': >> arch/mips/lasat/picvue_proc.c:73:6: error: implicit declaration of function 'copy_from_user' [-Werror=implicit-function-declaration] if (copy_from_user(kbuf, buf, len)) ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/copy_from_user +73 arch/mips/lasat/picvue_proc.c 1f21d2bd Brian Murphy 2007-08-21 57 c0b4abdd Alexey Dobriyan 2009-11-27 58 static int pvc_line_proc_open(struct inode *inode, struct file *file) 1f21d2bd Brian Murphy 2007-08-21 59 { d9dda78b Al Viro 2013-03-31 60 return single_open(file, pvc_line_proc_show, PDE_DATA(inode)); 1f21d2bd Brian Murphy 2007-08-21 61 } 1f21d2bd Brian Murphy 2007-08-21 62 c0b4abdd Alexey Dobriyan 2009-11-27 63 static ssize_t pvc_line_proc_write(struct file *file, const char __user *buf, c0b4abdd Alexey Dobriyan 2009-11-27 64 size_t count, loff_t *pos) c0b4abdd Alexey Dobriyan 2009-11-27 65 { d9dda78b Al Viro 2013-03-31 66 int lineno = *(int *)PDE_DATA(file_inode(file)); c0b4abdd Alexey Dobriyan 2009-11-27 67 char kbuf[PVC_LINELEN]; c0b4abdd Alexey Dobriyan 2009-11-27 68 size_t len; c0b4abdd Alexey Dobriyan 2009-11-27 69 9b987c4d Dan Carpenter 2013-11-08 70 BUG_ON(lineno < 0 || lineno >= PVC_NLINES); c0b4abdd Alexey Dobriyan 2009-11-27 71 c0b4abdd Alexey Dobriyan 2009-11-27 72 len = min(count, sizeof(kbuf) - 1); c0b4abdd Alexey Dobriyan 2009-11-27 @73 if (copy_from_user(kbuf, buf, len)) c0b4abdd Alexey Dobriyan 2009-11-27 74 return -EFAULT; c0b4abdd Alexey Dobriyan 2009-11-27 75 kbuf[len] = '\0'; 1f21d2bd Brian Murphy 2007-08-21 76 c0b4abdd Alexey Dobriyan 2009-11-27 77 if (len > 0 && kbuf[len - 1] == '\n') c0b4abdd Alexey Dobriyan 2009-11-27 78 len--; 1f21d2bd Brian Murphy 2007-08-21 79 8a39c520 Daniel Walker 2008-01-10 80 mutex_lock(&pvc_mutex); c0b4abdd Alexey Dobriyan 2009-11-27 81 strncpy(pvc_lines[lineno], kbuf, len); :::::: The code at line 73 was first introduced by commit :::::: c0b4abdd529d8256acc4cf0094db385877f34ae6 MIPS: Lasat: Convert to proc_fops / seq_file :::::: TO: Alexey Dobriyan <adobriyan@xxxxxxxxx> :::::: CC: Ralf Baechle <ralf@xxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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