This is a note to let you know that I've just added the patch titled
net: sched: cbq: create block for q->link.block
to the 4.14-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-sched-cbq-create-block-for-q-link.block.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@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Dec 14 11:45:40 CET 2017
From: Jiri Pirko <jiri@xxxxxxxxxxxx>
Date: Mon, 27 Nov 2017 18:37:21 +0100
Subject: net: sched: cbq: create block for q->link.block
From: Jiri Pirko <jiri@xxxxxxxxxxxx>
[ Upstream commit d51aae68b142f48232257e96ce317db25445418d ]
q->link.block is not initialized, that leads to EINVAL when one tries to
add filter there. So initialize it properly.
This can be reproduced by:
$ tc qdisc add dev eth0 root handle 1: cbq avpkt 1000 rate 1000Mbit bandwidth 1000Mbit
$ tc filter add dev eth0 parent 1: protocol ip prio 100 u32 match ip protocol 0 0x00 flowid 1:1
Reported-by: Jaroslav Aster <jaster@xxxxxxxxxx>
Reported-by: Ivan Vecera <ivecera@xxxxxxxxxx>
Fixes: 6529eaba33f0 ("net: sched: introduce tcf block infractructure")
Signed-off-by: Jiri Pirko <jiri@xxxxxxxxxxxx>
Acked-by: Eelco Chaudron <echaudro@xxxxxxxxxx>
Reviewed-by: Ivan Vecera <ivecera@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/sched/sch_cbq.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1157,9 +1157,13 @@ static int cbq_init(struct Qdisc *sch, s
if ((q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB])) == NULL)
return -EINVAL;
+ err = tcf_block_get(&q->link.block, &q->link.filter_list);
+ if (err)
+ goto put_rtab;
+
err = qdisc_class_hash_init(&q->clhash);
if (err < 0)
- goto put_rtab;
+ goto put_block;
q->link.sibling = &q->link;
q->link.common.classid = sch->handle;
@@ -1193,6 +1197,9 @@ static int cbq_init(struct Qdisc *sch, s
cbq_addprio(q, &q->link);
return 0;
+put_block:
+ tcf_block_put(q->link.block);
+
put_rtab:
qdisc_put_rtab(q->link.R_tab);
return err;
Patches currently in stable-queue which might be from jiri@xxxxxxxxxxxx are
queue-4.14/net-sched-cbq-create-block-for-q-link.block.patch