Hi Michael, [auto build test ERROR on: v4.4-rc3] [also build test ERROR on: next-20151127] url: https://github.com/0day-ci/linux/commits/Michael-S-Tsirkin/vhost-replace-with-on-data-path/20151130-163704 config: s390-performance_defconfig (attached as .config) 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 # save the attached .config to linux build tree make.cross ARCH=s390 All errors (new ones prefixed by >>): drivers/vhost/vhost.c: In function 'vhost_get_vq_desc': drivers/vhost/vhost.c:1345:6: warning: unused variable 'ret' [-Wunused-variable] int ret; ^ drivers/vhost/vhost.c:1344:13: warning: unused variable 'ring_head' [-Wunused-variable] __virtio16 ring_head; ^ drivers/vhost/vhost.c:1341:24: warning: unused variable 'found' [-Wunused-variable] unsigned int i, head, found = 0; ^ drivers/vhost/vhost.c:1341:18: warning: unused variable 'head' [-Wunused-variable] unsigned int i, head, found = 0; ^ drivers/vhost/vhost.c:1341:15: warning: unused variable 'i' [-Wunused-variable] unsigned int i, head, found = 0; ^ drivers/vhost/vhost.c:1340:20: warning: unused variable 'desc' [-Wunused-variable] struct vring_desc desc; ^ drivers/vhost/vhost.c: At top level: drivers/vhost/vhost.c:1373:2: error: expected identifier or '(' before 'if' if (unlikely(__get_user(ring_head, ^ In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/uapi/asm-generic/fcntl.h:4, from arch/s390/include/uapi/asm/fcntl.h:1, from include/uapi/linux/fcntl.h:4, from include/linux/fcntl.h:4, from include/linux/eventfd.h:11, from drivers/vhost/vhost.c:14: >> arch/s390/include/asm/uaccess.h:250:2: error: expected identifier or '(' before ')' token }) ^ include/linux/compiler.h:166:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ drivers/vhost/vhost.c:1373:15: note: in expansion of macro '__get_user' if (unlikely(__get_user(ring_head, ^ drivers/vhost/vhost.c:1381:2: warning: data definition has no type or storage class head = vhost16_to_cpu(vq, ring_head); ^ drivers/vhost/vhost.c:1381:2: error: type defaults to 'int' in declaration of 'head' [-Werror=implicit-int] drivers/vhost/vhost.c:1381:24: error: 'vq' undeclared here (not in a function) head = vhost16_to_cpu(vq, ring_head); ^ drivers/vhost/vhost.c:1381:28: error: 'ring_head' undeclared here (not in a function) head = vhost16_to_cpu(vq, ring_head); ^ drivers/vhost/vhost.c:1384:2: error: expected identifier or '(' before 'if' if (unlikely(head >= vq->num)) { ^ drivers/vhost/vhost.c:1391:2: warning: data definition has no type or storage class *out_num = *in_num = 0; ^ drivers/vhost/vhost.c:1391:3: error: type defaults to 'int' in declaration of 'out_num' [-Werror=implicit-int] *out_num = *in_num = 0; ^ drivers/vhost/vhost.c:1391:14: error: 'in_num' undeclared here (not in a function) *out_num = *in_num = 0; ^ drivers/vhost/vhost.c:1392:2: error: expected identifier or '(' before 'if' if (unlikely(log)) ^ drivers/vhost/vhost.c:1395:2: warning: data definition has no type or storage class i = head; ^ drivers/vhost/vhost.c:1395:2: error: type defaults to 'int' in declaration of 'i' [-Werror=implicit-int] drivers/vhost/vhost.c:1395:2: error: initializer element is not constant drivers/vhost/vhost.c:1396:2: error: expected identifier or '(' before 'do' do { ^ drivers/vhost/vhost.c:1454:4: error: expected identifier or '(' before 'while' } while ((i = next_desc(vq, &desc)) != -1); ^ drivers/vhost/vhost.c:1457:4: error: expected '=', ',', ';', 'asm' or '__attribute__' before '->' token vq->last_avail_idx++; ^ In file included from arch/s390/include/asm/bug.h:69:0, from include/linux/bug.h:4, from include/linux/thread_info.h:11, from include/asm-generic/preempt.h:4, from arch/s390/include/generated/asm/preempt.h:1, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/wait.h:8, from include/linux/eventfd.h:12, from drivers/vhost/vhost.c:14: include/asm-generic/bug.h:55:27: error: expected identifier or '(' before 'do' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^ drivers/vhost/vhost.c:1461:2: note: in expansion of macro 'BUG_ON' BUG_ON(!(vq->used_flags & VRING_USED_F_NO_NOTIFY)); ^ include/asm-generic/bug.h:55:66: error: expected identifier or '(' before 'while' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^ drivers/vhost/vhost.c:1461:2: note: in expansion of macro 'BUG_ON' BUG_ON(!(vq->used_flags & VRING_USED_F_NO_NOTIFY)); ^ drivers/vhost/vhost.c:1462:2: error: expected identifier or '(' before 'return' return head; ^ drivers/vhost/vhost.c:1463:1: error: expected identifier or '(' before '}' token } ^ drivers/vhost/vhost.c:1235:12: warning: 'get_indirect' defined but not used [-Wunused-function] static int get_indirect(struct vhost_virtqueue *vq, ^ drivers/vhost/vhost.c: In function 'vhost_get_vq_desc': drivers/vhost/vhost.c:1369:2: warning: control reaches end of non-void function [-Wreturn-type] } ^ cc1: some warnings being treated as errors vim +250 arch/s390/include/asm/uaccess.h cfa785e62 arch/s390/include/asm/uaccess.h Heiko Carstens 2014-01-22 234 sizeof(*(ptr))); \ 97fa5a664 include/asm-s390/uaccess.h Al Viro 2006-02-03 235 (x) = *(__force __typeof__(*(ptr)) *) &__x; \ 1047aa772 include/asm-s390/uaccess.h Martin Schwidefsky 2005-11-07 236 break; \ 1047aa772 include/asm-s390/uaccess.h Martin Schwidefsky 2005-11-07 237 }; \ 1047aa772 include/asm-s390/uaccess.h Martin Schwidefsky 2005-11-07 238 case 8: { \ 1047aa772 include/asm-s390/uaccess.h Martin Schwidefsky 2005-11-07 239 unsigned long long __x; \ cfa785e62 arch/s390/include/asm/uaccess.h Heiko Carstens 2014-01-22 240 __gu_err = __get_user_fn(&__x, ptr, \ cfa785e62 arch/s390/include/asm/uaccess.h Heiko Carstens 2014-01-22 241 sizeof(*(ptr))); \ 97fa5a664 include/asm-s390/uaccess.h Al Viro 2006-02-03 242 (x) = *(__force __typeof__(*(ptr)) *) &__x; \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 243 break; \ 1047aa772 include/asm-s390/uaccess.h Martin Schwidefsky 2005-11-07 244 }; \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 245 default: \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 246 __get_user_bad(); \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 247 break; \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 248 } \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 249 __gu_err; \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 @250 }) ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 251 ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 252 #define get_user(x, ptr) \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 253 ({ \ dab4079d5 arch/s390/include/asm/uaccess.h Heiko Carstens 2009-06-12 254 might_fault(); \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 255 __get_user(x, ptr); \ ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 256 }) ^1da177e4 include/asm-s390/uaccess.h Linus Torvalds 2005-04-16 257 4f41c2b45 arch/s390/include/asm/uaccess.h Heiko Carstens 2014-01-23 258 int __get_user_bad(void) __attribute__((noreturn)); :::::: The code at line 250 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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