Hi,
all stable kernels carrying
> From 8b4c3cdd9dd8290343ce959a132d3b334062c5b9 Mon Sep 17 00:00:00 2001
> From: David Ahern <dsahern@xxxxxxxxx>
> Date: Wed, 3 Oct 2018 15:05:36 -0700
> Subject: [PATCH] net: sched: Add policy validation for tc attributes
>
> A number of TC attributes are processed without proper validation
> (e.g., length checks). Add a tca policy for all input attributes and use
> when invoking nlmsg_parse.
>
> The 2 Fixes tags below cover the latest additions. The other attributes
> are a string (KIND), nested attribute (OPTIONS which does seem to have
> validation in most cases), for dumps only or a flag.
>
> Fixes: 5bc1701881e39 ("net: sched: introduce multichain support for filters")
> Fixes: d47a6b0e7c492 ("net: sched: introduce ingress/egress block index attributes for qdisc")
> Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
should backport
> From e72bde6b66299602087c8c2350d36a525e75d06e Mon Sep 17 00:00:00 2001
> From: David Ahern <dsahern@xxxxxxxxx>
> Date: Wed, 24 Oct 2018 08:32:49 -0700
> Subject: [PATCH] net: sched: Remove TCA_OPTIONS from policy
>
> Marco reported an error with hfsc:
> root@Calimero:~# tc qdisc add dev eth0 root handle 1:0 hfsc default 1
> Error: Attribute failed policy validation.
>
> Apparently a few implementations pass TCA_OPTIONS as a binary instead
> of nested attribute, so drop TCA_OPTIONS from the policy.
>
> Fixes: 8b4c3cdd9dd8 ("net: sched: Add policy validation for tc attributes")
> Reported-by: Marco Berizzi <pupilla@xxxxxxxxx>
> Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
See https://lkml.org/lkml/2018/10/26/80.
--
Regards,
Thomas Deutschmann / Gentoo Linux Developer
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