This is a note to let you know that I've just added the patch titled
IB/uverbs: reject invalid or unknown opcodes
to the 4.1-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:
ib-uverbs-reject-invalid-or-unknown-opcodes.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From b632ffa7cee439ba5dce3b3bc4a5cbe2b3e20133 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <[email protected]>
Date: Wed, 26 Aug 2015 11:00:37 +0200
Subject: IB/uverbs: reject invalid or unknown opcodes
From: Christoph Hellwig <[email protected]>
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 <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
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
@@ -2244,6 +2244,12 @@ 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) {
@@ -2283,9 +2289,11 @@ 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;
}
}
Patches currently in stable-queue which might be from [email protected] are
queue-4.1/ib-uverbs-reject-invalid-or-unknown-opcodes.patch
queue-4.1/nfsd-fix-an-fs_layout_types-layout_types-encode-bug.patch
queue-4.1/ib-srp-handle-partial-connection-success-correctly.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
