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RDMA/uverbs: Verify MR access flags
author
Michael Guralnik
<michaelgur@mellanox.com>
Wed, 8 Jan 2020 18:05:35 +0000
(20:05 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Fri, 14 Feb 2020 21:34:08 +0000
(16:34 -0500)
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 <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
patch
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diff --git
a/include/rdma/ib_verbs.h
b/include/rdma/ib_verbs.h
index
44c5263
..
75c7b5e
100644
(file)
--- 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;
}