From b73401025a14b11f229526af4e799fa796284fe6 Mon Sep 17 00:00:00 2001 From: Michael Guralnik Date: Wed, 8 Jan 2020 20:05:35 +0200 Subject: [PATCH] RDMA/uverbs: Verify MR access flags 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.com Signed-off-by: Michael Guralnik Signed-off-by: Yishai Hadas Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman --- include/rdma/ib_verbs.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 44c52639..75c7b5e 100644 --- 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) !(flags & IB_ACCESS_LOCAL_WRITE)) return -EINVAL; + if (flags & ~IB_ACCESS_SUPPORTED) + return -EINVAL; + return 0; } -- 2.7.4