From 9bab0887867c7984640f837a19eaef9fe4496714 Mon Sep 17 00:00:00 2001 From: Michael Guralnik Date: Thu, 16 Apr 2020 17:55:21 +0800 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 Signed-off-by: Yang Yingliang --- 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 14c62e9b60e3..c1c1a61d81f6 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -3870,6 +3870,9 @@ 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; } -- GitLab