netdev - [PATCH net-next 0/2] tcp: take care of another syzbot issue

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Date:   Mon, 21 Feb 2022 19:21:11 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>, Marco Elver <elver@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 0/2] tcp: take care of another syzbot issue

From: Eric Dumazet <edumazet@...gle.com>

This is a minor issue: It took months for syzbot to find a C repro,
and even with it, I had to spend a lot of time to understand KFENCE
was a prereq. With the default kfence 500ms interval, I had to be
very patient to trigger the kernel warning and perform my analysis.

This series targets net-next tree, because I added a new generic helper
in the first patch, then fixed the issue in the second one.
They can be backported once proven solid.

Eric Dumazet (2):
  net: add skb_set_end_offset() helper
  net: preserve skb_end_offset() in skb_unclone_keeptruesize()

 include/linux/skbuff.h | 30 +++++++++++++++++--------
 net/core/skbuff.c      | 51 ++++++++++++++++++++++++++++++------------
 2 files changed, 58 insertions(+), 23 deletions(-)

-- 
2.35.1.473.g83b2b277ed-goog