NACK: [SRU][F:linux-bluefield][PATCH 0/8] Fix fragmentation support for TC connection tracking

[Tim Gardner]

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
> 

-- 
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Tim Gardner
Canonical, Inc