kbuild test robot
2019-Dec-15 18:54 UTC
[vhost:linux-next 12/12] drivers/vhost/vhost.c:1968:25: sparse: sparse: incompatible types in comparison expression (different type sizes):
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 at intel.com>
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 at redhat.com>
:::::: CC: David S. Miller <davem at davemloft.net>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all at lists.01.org Intel
Corporation
Possibly Parallel Threads
Wisdom of the Ancients
