diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-08-26 11:00:37 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-10-07 10:21:25 -0400 |
| commit | 8e75f06a93a76a04ee30400c4cbdecc190d3b25d (patch) | |
| tree | 0485a35e6c668302699de88332e884e0bd26d367 /drivers/infiniband | |
| parent | b027811d9167a4d1e34ae5fc9d5b4e3fca0c5595 (diff) | |
| download | lwn-8e75f06a93a76a04ee30400c4cbdecc190d3b25d.tar.gz lwn-8e75f06a93a76a04ee30400c4cbdecc190d3b25d.zip | |
IB/uverbs: reject invalid or unknown opcodes
[ Upstream commit b632ffa7cee439ba5dce3b3bc4a5cbe2b3e20133 ]
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.
Cc: stable@vger.kernel.org
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 63a9f04bdb6c..f3748311d79b 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -2204,6 +2204,12 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, 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) { @@ -2243,9 +2249,11 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, 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; } } |