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Message-Id: <20200213151904.370359735@linuxfoundation.org>
Date: Thu, 13 Feb 2020 07:20:04 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Michael Guralnik <michaelgur@...lanox.com>,
Yishai Hadas <yishaih@...lanox.com>,
Jason Gunthorpe <jgg@...lanox.com>
Subject: [PATCH 5.5 008/120] RDMA/uverbs: Verify MR access flags
From: Michael Guralnik <michaelgur@...lanox.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.com
Signed-off-by: Michael Guralnik <michaelgur@...lanox.com>
Signed-off-by: Yishai Hadas <yishaih@...lanox.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
include/rdma/ib_verbs.h | 3 +++
1 file changed, 3 insertions(+)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4300,6 +4300,9 @@ static inline int ib_check_mr_access(int
!(flags & IB_ACCESS_LOCAL_WRITE))
return -EINVAL;
+ if (flags & ~IB_ACCESS_SUPPORTED)
+ return -EINVAL;
+
return 0;
}
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