From: <gregkh@linuxfoundation.org>
To: sergeygo@mellanox.com, gregkh@linuxfoundation.org,
jgg@mellanox.com, leon@kernel.org, loberman@redhat.com,
stable@vger.kernel.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "IB/mlx5: Fix incorrect size of klms in the memory region" has been added to the 4.9-stable tree
Date: Mon, 12 Mar 2018 16:47:52 +0100 [thread overview]
Message-ID: <15208696721385@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
IB/mlx5: Fix incorrect size of klms in the memory region
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-mlx5-fix-incorrect-size-of-klms-in-the-memory-region.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From da343b6d90e11132f1e917d865d88ee35d6e6d00 Mon Sep 17 00:00:00 2001
From: Sergey Gorenko <sergeygo@mellanox.com>
Date: Sun, 25 Feb 2018 13:39:48 +0200
Subject: IB/mlx5: Fix incorrect size of klms in the memory region
From: Sergey Gorenko <sergeygo@mellanox.com>
commit da343b6d90e11132f1e917d865d88ee35d6e6d00 upstream.
The value of mr->ndescs greater than mr->max_descs is set in the
function mlx5_ib_sg_to_klms() if sg_nents is greater than
mr->max_descs. This is an invalid value and it causes the
following error when registering mr:
mlx5_0:dump_cqe:276:(pid 193): dump error cqe
00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000030: 00 00 00 00 0f 00 78 06 25 00 00 8b 08 1e 8f d3
Cc: <stable@vger.kernel.org> # 4.5
Fixes: b005d3164713 ("mlx5: Add arbitrary sg list support")
Signed-off-by: Sergey Gorenko <sergeygo@mellanox.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/infiniband/hw/mlx5/mr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1821,7 +1821,6 @@ mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr
mr->ibmr.iova = sg_dma_address(sg) + sg_offset;
mr->ibmr.length = 0;
- mr->ndescs = sg_nents;
for_each_sg(sgl, sg, sg_nents, i) {
if (unlikely(i >= mr->max_descs))
@@ -1833,6 +1832,7 @@ mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr
sg_offset = 0;
}
+ mr->ndescs = i;
if (sg_offset_p)
*sg_offset_p = sg_offset;
Patches currently in stable-queue which might be from sergeygo@mellanox.com are
queue-4.9/ib-mlx5-fix-incorrect-size-of-klms-in-the-memory-region.patch
reply other threads:[~2018-03-12 15:48 UTC|newest]
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