From: Michael Guralnik michaelgur@mellanox.com
commit ca95c1411198c2d87217c19d44571052cdc94725 upstream.
Verify that MR access flags that are passed from user are all supported ones, otherwise an error is returned.
Fixes: 4fca03778351 ("IB/uverbs: Move ib_access_flags and ib_read_counters_flags to uapi") Link: https://lore.kernel.org/r/1578506740-22188-6-git-send-email-yishaih@mellanox... Signed-off-by: Michael Guralnik michaelgur@mellanox.com Signed-off-by: Yishai Hadas yishaih@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/rdma/ib_verbs.h | 3 +++ 1 file changed, 3 insertions(+)
--- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -4252,6 +4252,9 @@ static inline int ib_check_mr_access(int !(flags & IB_ACCESS_LOCAL_WRITE)) return -EINVAL;
+ if (flags & ~IB_ACCESS_SUPPORTED) + return -EINVAL; + return 0; }