This is a note to let you know that I've just added the patch titled

IB/hfi1: Initialize bth1 in 16B rc ack builder

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: ib-hfi1-initialize-bth1-in-16b-rc-ack-builder.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Fri Feb 23 11:45:09 CET 2018

From: Dennis Dalessandro dennis.dalessandro@intel.com Date: Tue, 14 Nov 2017 04:34:23 -0800 Subject: IB/hfi1: Initialize bth1 in 16B rc ack builder

From: Dennis Dalessandro dennis.dalessandro@intel.com

[ Upstream commit 8935780b9f7bbad0f2eb5dd43f61ba7b509a1575 ]

It is possible the bth1 variable could be used uninitialized so going ahead and giving it a default value.

Otherwise we leak stack memory to the network.

Fixes: 5b6cabb0db77 ("IB/hfi1: Add 16B RC/UC support") Reviewed-by: Don Hiatt don.hiatt@intel.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@intel.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/hfi1/rc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/infiniband/hw/hfi1/rc.c +++ b/drivers/infiniband/hw/hfi1/rc.c @@ -815,7 +815,7 @@ static inline void hfi1_make_rc_ack_16B( struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); struct hfi1_16b_header *hdr = &opa_hdr->opah; struct ib_other_headers *ohdr; - u32 bth0, bth1; + u32 bth0, bth1 = 0; u16 len, pkey; u8 becn = !!is_fecn; u8 l4 = OPA_16B_L4_IB_LOCAL;

Patches currently in stable-queue which might be from dennis.dalessandro@intel.com are

queue-4.14/ib-hfi1-initialize-bth1-in-16b-rc-ack-builder.patch