NACK: [SRU][F:linux-bluefield][PATCH 0/8] Fix fragmentation support for TC connection tracking
Maor Dickman
maord at nvidia.com
Mon Aug 30 11:15:37 UTC 2021
Linux-bluefield branch contains two patches [1][2] which cause a conflict when I
tried to cherry-pick the patch and forced me to do small modification.
Patch [1] was submitted to upstream after this patch ("Fix fragmentation support
for TC connection tracking")
Patch [2] is wrong so I revert it in later patch.
[1] 7a73ed569d90 net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flow
[2] f797fab7280c net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flow
> -----Original Message-----
> From: Tim Gardner <tim.gardner at canonical.com>
> Sent: Tuesday, August 24, 2021 2:47 PM
> To: Bodong Wang <bodong at nvidia.com>; kernel-team at lists.ubuntu.com
> Cc: Maor Dickman <maord at nvidia.com>; Majd Dibbiny <majd at nvidia.com>
> Subject: NACK: [SRU][F:linux-bluefield][PATCH 0/8] Fix fragmentation
> support for TC connection tracking
>
> External email: Use caution opening links or attachments
>
>
> While these patches do apply correctly, PATCH 1/8 is not a cherry-pick.
> Even if you did the revert first ("Revert "net/sched: act_ct: Fix skb double-
> free in tcf_ct_handle_fragments() error flow"), its still not a clean cherry-pick
> though it is a simpler backport.
>
> rtg
>
> On 8/23/21 4:36 PM, Bodong Wang wrote:
> > When using OVS with tc to offload connection tracking flows, sending
> > udp/icmp fragmented traffic will cause call trace with NULL dereference.
> >
> > This series contains 7 patches from upstream which fix act_ct handling
> > of fragmented packets. And revert a patch which is covered by the 7
> > upstream patches.
> >
> > Davide Caratti (1):
> > net/sched: act_ct: fix wild memory access when clearing fragments
> >
> > Maor Dickman (1):
> > Revert "net/sched: act_ct: Fix skb double-free in
> > tcf_ct_handle_fragments() error flow"
> >
> > wenxu (6):
> > net/sched: act_ct: fix restore the qdisc_skb_cb after defrag
> > net/sched: act_ct: fix miss set mru for ovs after defrag in act_ct
> > net/sched: fix miss init the mru in qdisc_skb_cb
> > net/sched: act_mirred: refactor the handle of xmit
> > net/sched: sch_frag: add generic packet fragment support.
> > ipv6: add ipv6_fragment hook in ipv6_stub
> >
> > include/linux/skbuff.h | 1 +
> > include/net/act_api.h | 6 ++
> > include/net/ipv6_stubs.h | 2 +
> > include/net/sch_generic.h | 8 +--
> > net/core/dev.c | 2 +
> > net/ipv6/addrconf_core.c | 8 +++
> > net/ipv6/af_inet6.c | 1 +
> > net/openvswitch/flow.c | 1 +
> > net/sched/Makefile | 1 +
> > net/sched/act_api.c | 16 +++++
> > net/sched/act_ct.c | 29 +++++++--
> > net/sched/act_mirred.c | 21 +++++--
> > net/sched/cls_api.c | 1 +
> > net/sched/sch_frag.c | 150
> ++++++++++++++++++++++++++++++++++++++++++++++
> > 14 files changed, 231 insertions(+), 16 deletions(-)
> > create mode 100644 net/sched/sch_frag.c
> >
>
> --
> -----------
> Tim Gardner
> Canonical, Inc
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