4.14-stable review patch. If anyone has any objections, please let me know.
------------------
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;