tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next head: b072ae74df177c3ad7704c5fbe66e3f10aad9d4e commit: b072ae74df177c3ad7704c5fbe66e3f10aad9d4e [12/12] vhost: use vhost_desc instead of vhost_log reproduce: # apt-get install sparse # sparse version: v0.6.1-101-g82dee2e-dirty git checkout b072ae74df177c3ad7704c5fbe66e3f10aad9d4e make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * >> drivers/vhost/vhost.c:1968:25: sparse: sparse: incompatible types in comparison expression (different type sizes): >> drivers/vhost/vhost.c:1968:25: sparse: unsigned int * >> drivers/vhost/vhost.c:1968:25: sparse: unsigned long long * drivers/vhost/vhost.c:947:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:947:16: sparse: expected void *addr drivers/vhost/vhost.c:947:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:932:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:932:16: sparse: expected void *addr drivers/vhost/vhost.c:932:16: sparse: got restricted __virtio16 [noderef] [usertype] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:1024:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1024:16: sparse: expected void *addr drivers/vhost/vhost.c:1024:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:999:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:999:16: sparse: expected void *addr drivers/vhost/vhost.c:999:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:1005:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1005:16: sparse: expected void *addr drivers/vhost/vhost.c:1005:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:954:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:954:16: sparse: expected void *addr drivers/vhost/vhost.c:954:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:1012:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1012:16: sparse: expected void *addr drivers/vhost/vhost.c:1012:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:1018:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1018:16: sparse: expected void *addr drivers/vhost/vhost.c:1018:16: sparse: got restricted __virtio16 [noderef] [usertype] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:999:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:999:16: sparse: expected void *addr drivers/vhost/vhost.c:999:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr drivers/vhost/vhost.c:999:16: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:999:16: sparse: expected void *addr drivers/vhost/vhost.c:999:16: sparse: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: sparse: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:763:17: sparse: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:763:17: sparse: got void * drivers/vhost/vhost.c:910:42: sparse: sparse: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:910:42: sparse: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:910:42: sparse: got void *addr vim +1968 drivers/vhost/vhost.c cc5e710759470b Jason Wang 2019-01-16 1948 b072ae74df177c Michael S. Tsirkin 2019-12-11 1949 int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_desc *log, cc5e710759470b Jason Wang 2019-01-16 1950 unsigned int log_num, u64 len, struct iovec *iov, int count) 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1951 { 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1952 int i, r; 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1953 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1954 /* Make sure data written is seen before log. */ 5659338c88963e Michael S. Tsirkin 2010-02-01 1955 smp_wmb(); cc5e710759470b Jason Wang 2019-01-16 1956 cc5e710759470b Jason Wang 2019-01-16 1957 if (vq->iotlb) { cc5e710759470b Jason Wang 2019-01-16 1958 for (i = 0; i < count; i++) { cc5e710759470b Jason Wang 2019-01-16 1959 r = log_write_hva(vq, (uintptr_t)iov[i].iov_base, cc5e710759470b Jason Wang 2019-01-16 1960 iov[i].iov_len); cc5e710759470b Jason Wang 2019-01-16 1961 if (r < 0) cc5e710759470b Jason Wang 2019-01-16 1962 return r; cc5e710759470b Jason Wang 2019-01-16 1963 } cc5e710759470b Jason Wang 2019-01-16 1964 return 0; cc5e710759470b Jason Wang 2019-01-16 1965 } cc5e710759470b Jason Wang 2019-01-16 1966 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1967 for (i = 0; i < log_num; ++i) { 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 @1968 u64 l = min(log[i].len, len); 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1969 r = log_write(vq->log_base, log[i].addr, l); 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1970 if (r < 0) 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1971 return r; 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1972 len -= l; 5786aee8bf6d74 Michael S. Tsirkin 2010-09-22 1973 if (!len) { 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1974 if (vq->log_ctx) 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1975 eventfd_signal(vq->log_ctx, 1); 5786aee8bf6d74 Michael S. Tsirkin 2010-09-22 1976 return 0; 5786aee8bf6d74 Michael S. Tsirkin 2010-09-22 1977 } 5786aee8bf6d74 Michael S. Tsirkin 2010-09-22 1978 } 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1979 /* Length written exceeds what we have stored. This is a bug. */ 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1980 BUG(); 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1981 return 0; 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1982 } 6ac1afbf6132df Asias He 2013-05-06 1983 EXPORT_SYMBOL_GPL(vhost_log_write); 3a4d5c94e95935 Michael S. Tsirkin 2010-01-14 1984 :::::: The code at line 1968 was first introduced by commit :::::: 3a4d5c94e959359ece6d6b55045c3f046677f55c vhost_net: a kernel-level virtio server :::::: TO: Michael S. Tsirkin <mst@xxxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
