This is a note to let you know that I've just added the patch titled mlx5: Fix mlx5_ib_map_mr_sg mr length 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: mlx5-fix-mlx5_ib_map_mr_sg-mr-length.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@xxxxxxxxxxxxxxx> know about it. >From 0a49f2c31c3efbeb0de3e4b5598764887f629be2 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg <sagi@xxxxxxxxxxx> Date: Sun, 23 Apr 2017 14:31:42 +0300 Subject: mlx5: Fix mlx5_ib_map_mr_sg mr length From: Sagi Grimberg <sagi@xxxxxxxxxxx> commit 0a49f2c31c3efbeb0de3e4b5598764887f629be2 upstream. In case we got an initial sg_offset, we need to account for it in the mr length. Fixes: ff2ba9936591 ("IB/core: Add passing an offset into the SG to ib_map_mr_sg") Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx> Tested-by: Israel Rukshin <israelr@xxxxxxxxxxxx> Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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 @@ -1828,7 +1828,7 @@ mlx5_ib_sg_to_klms(struct mlx5_ib_mr *mr klms[i].va = cpu_to_be64(sg_dma_address(sg) + sg_offset); klms[i].bcount = cpu_to_be32(sg_dma_len(sg) - sg_offset); klms[i].key = cpu_to_be32(lkey); - mr->ibmr.length += sg_dma_len(sg); + mr->ibmr.length += sg_dma_len(sg) - sg_offset; sg_offset = 0; } Patches currently in stable-queue which might be from sagi@xxxxxxxxxxx are queue-4.9/mlx5-fix-mlx5_ib_map_mr_sg-mr-length.patch