Hi Mauro, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.17-rc7 next-20180529] [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/Mauro-Carvalho-Chehab/media-dvb-get-rid-of-VIDEO_SET_SPU_PALETTE/20180530-033705 config: x86_64-randconfig-g0-05291849 (attached as .config) compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): fs/compat_ioctl.c: In function 'do_video_set_spu_palette': fs/compat_ioctl.c:220:45: error: invalid application of 'sizeof' to incomplete type 'struct video_spu_palette' up_native = compat_alloc_user_space(sizeof(struct video_spu_palette)); ^ In file included from include/linux/uaccess.h:14:0, from include/linux/compat.h:20, from fs/compat_ioctl.c:17: >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:257:15: note: in definition of macro 'put_user' __typeof__(*(ptr)) __pu_val; \ ^ arch/x86/include/asm/uaccess.h:260:11: warning: assignment makes integer from pointer without a cast __pu_val = x; \ ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:261:19: note: in definition of macro 'put_user' switch (sizeof(*(ptr))) { \ ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ >> arch/x86/include/asm/uaccess.h:272:3: note: in expansion of macro '__put_user_x8' __put_user_x8(__pu_val, ptr, __ret_pu); \ ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ >> arch/x86/include/asm/uaccess.h:272:3: note: in expansion of macro '__put_user_x8' __put_user_x8(__pu_val, ptr, __ret_pu); \ ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ >> fs/compat_ioctl.c:221:46: error: dereferencing pointer to incomplete type err = put_user(compat_ptr(palp), &up_native->palette); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:221:9: note: in expansion of macro 'put_user' err = put_user(compat_ptr(palp), &up_native->palette); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:257:15: note: in definition of macro 'put_user' __typeof__(*(ptr)) __pu_val; \ ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:261:19: note: in definition of macro 'put_user' switch (sizeof(*(ptr))) { \ ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ >> arch/x86/include/asm/uaccess.h:272:3: note: in expansion of macro '__put_user_x8' __put_user_x8(__pu_val, ptr, __ret_pu); \ ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ >> arch/x86/include/asm/uaccess.h:272:3: note: in expansion of macro '__put_user_x8' __put_user_x8(__pu_val, ptr, __ret_pu); \ ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:25: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c:222:36: error: dereferencing pointer to incomplete type err |= put_user(length, &up_native->length); ^ arch/x86/include/asm/uaccess.h:187:42: note: in definition of macro '__put_user_x' : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") ^ fs/compat_ioctl.c:222:9: note: in expansion of macro 'put_user' err |= put_user(length, &up_native->length); ^ fs/compat_ioctl.c: At top level: fs/compat_ioctl.c:208:12: warning: 'do_video_set_spu_palette' defined but not used [-Wunused-function] static int do_video_set_spu_palette(struct file *file, ^ vim +221 fs/compat_ioctl.c 6e87abd0 David S. Miller 2005-11-16 207 66cf191f Al Viro 2016-01-07 208 static int do_video_set_spu_palette(struct file *file, b4341721 Jann Horn 2016-01-05 209 unsigned int cmd, struct compat_video_spu_palette __user *up) 6e87abd0 David S. Miller 2005-11-16 210 { 6e87abd0 David S. Miller 2005-11-16 211 struct video_spu_palette __user *up_native; 6e87abd0 David S. Miller 2005-11-16 212 compat_uptr_t palp; 6e87abd0 David S. Miller 2005-11-16 213 int length, err; 6e87abd0 David S. Miller 2005-11-16 214 6e87abd0 David S. Miller 2005-11-16 215 err = get_user(palp, &up->palette); 6e87abd0 David S. Miller 2005-11-16 216 err |= get_user(length, &up->length); 12176503 Kees Cook 2012-10-25 217 if (err) 12176503 Kees Cook 2012-10-25 218 return -EFAULT; 6e87abd0 David S. Miller 2005-11-16 219 6e87abd0 David S. Miller 2005-11-16 @220 up_native = compat_alloc_user_space(sizeof(struct video_spu_palette)); 7116e994 Heiko Carstens 2006-12-06 @221 err = put_user(compat_ptr(palp), &up_native->palette); 7116e994 Heiko Carstens 2006-12-06 222 err |= put_user(length, &up_native->length); 7116e994 Heiko Carstens 2006-12-06 223 if (err) 7116e994 Heiko Carstens 2006-12-06 224 return -EFAULT; 6e87abd0 David S. Miller 2005-11-16 225 66cf191f Al Viro 2016-01-07 226 err = do_ioctl(file, cmd, (unsigned long) up_native); 6e87abd0 David S. Miller 2005-11-16 227 6e87abd0 David S. Miller 2005-11-16 228 return err; 6e87abd0 David S. Miller 2005-11-16 229 } 6e87abd0 David S. Miller 2005-11-16 230 :::::: The code at line 221 was first introduced by commit :::::: 7116e994b47f3988389be4ceee67dac64b56e0d0 [PATCH] compat: fix uaccess handling :::::: TO: Heiko Carstens <heiko.carstens@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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