This is a note to let you know that I've just added the patch titled
net: thunderx: avoid exposing kernel stack
to the 4.4-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:
net-thunderx-avoid-exposing-kernel-stack.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon May 16 11:21:32 PDT 2016
From: "xypron.glpk@xxxxxx" <xypron.glpk@xxxxxx>
Date: Mon, 9 May 2016 00:46:18 +0200
Subject: net: thunderx: avoid exposing kernel stack
From: "xypron.glpk@xxxxxx" <xypron.glpk@xxxxxx>
[ Upstream commit 161de2caf68c549c266e571ffba8e2163886fb10 ]
Reserved fields should be set to zero to avoid exposing
bits from the kernel stack.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
@@ -550,6 +550,7 @@ static void nicvf_rcv_queue_config(struc
nicvf_config_vlan_stripping(nic, nic->netdev->features);
/* Enable Receive queue */
+ memset(&rq_cfg, 0, sizeof(struct rq_cfg));
rq_cfg.ena = 1;
rq_cfg.tcp_ena = 0;
nicvf_queue_reg_write(nic, NIC_QSET_RQ_0_7_CFG, qidx, *(u64 *)&rq_cfg);
@@ -582,6 +583,7 @@ void nicvf_cmp_queue_config(struct nicvf
qidx, (u64)(cq->dmem.phys_base));
/* Enable Completion queue */
+ memset(&cq_cfg, 0, sizeof(struct cq_cfg));
cq_cfg.ena = 1;
cq_cfg.reset = 0;
cq_cfg.caching = 0;
@@ -630,6 +632,7 @@ static void nicvf_snd_queue_config(struc
qidx, (u64)(sq->dmem.phys_base));
/* Enable send queue & set queue size */
+ memset(&sq_cfg, 0, sizeof(struct sq_cfg));
sq_cfg.ena = 1;
sq_cfg.reset = 0;
sq_cfg.ldwb = 0;
@@ -666,6 +669,7 @@ static void nicvf_rbdr_config(struct nic
/* Enable RBDR & set queue size */
/* Buffer size should be in multiples of 128 bytes */
+ memset(&rbdr_cfg, 0, sizeof(struct rbdr_cfg));
rbdr_cfg.ena = 1;
rbdr_cfg.reset = 0;
rbdr_cfg.ldwb = 0;
Patches currently in stable-queue which might be from xypron.glpk@xxxxxx are
queue-4.4/net-thunderx-avoid-exposing-kernel-stack.patch
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