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@xxxxxxxxxxxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index a15318a..f9f3921 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2372,6 +2372,12 @@ 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) {
@@ -2413,7 +2419,8 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
break;
default:
- break;
+ ret = -EINVAL;
+ goto out_put;
}
}
--
1.9.1
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