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Date: Tue, 29 Sep 2015 15:47:13 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Christoph Hellwig <hch@....de>, Jason Gunthorpe <jgunthorpe@...idianresearch.com>, Sagi Grimberg <sagig@...lanox.com>, Doug Ledford <dledford@...hat.com> Subject: [PATCH 3.10 25/56] IB/uverbs: reject invalid or unknown opcodes 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christoph Hellwig <hch@....de> commit b632ffa7cee439ba5dce3b3bc4a5cbe2b3e20133 upstream. We have many WR opcodes that are only supported in kernel space and/or require optional information to be copied into the WR structure. Reject all those not explicitly handled so that we can't pass invalid information to drivers. Signed-off-by: Christoph Hellwig <hch@....de> Reviewed-by: Jason Gunthorpe <jgunthorpe@...idianresearch.com> Reviewed-by: Sagi Grimberg <sagig@...lanox.com> Signed-off-by: Doug Ledford <dledford@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/infiniband/core/uverbs_cmd.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -2106,6 +2106,12 @@ ssize_t ib_uverbs_post_send(struct ib_uv next->send_flags = user_wr->send_flags; if (is_ud) { + if (next->opcode != IB_WR_SEND && + next->opcode != IB_WR_SEND_WITH_IMM) { + ret = -EINVAL; + goto out_put; + } + next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, file->ucontext); if (!next->wr.ud.ah) { @@ -2142,9 +2148,11 @@ ssize_t ib_uverbs_post_send(struct ib_uv user_wr->wr.atomic.compare_add; next->wr.atomic.swap = user_wr->wr.atomic.swap; next->wr.atomic.rkey = user_wr->wr.atomic.rkey; + case IB_WR_SEND: break; default: - break; + ret = -EINVAL; + goto out_put; } } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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