diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-08-26 11:00:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-01 11:36:16 +0200 |
| commit | 58922dda37a03d4ae7a51f5fe1fc042cbc749b51 (patch) | |
| tree | 505933412ce17efaf8012d07b6629e6fa1385969 | |
| parent | 25a58b07f7993b551acf22dfdb90d81282efb200 (diff) | |
IB/uverbs: reject invalid or unknown opcodes
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@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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 2adc14372b94..5e66eab292d8 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -2111,6 +2111,12 @@ 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) { @@ -2150,9 +2156,11 @@ 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; } } |