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e9c6e79760
Before commit965b57b469("net: Introduce a new proto_ops ->read_skb()"), skb was not dequeued from receive queue hence when we close TCP socket skb can be just flushed synchronously. After this commit, we have to uncharge skb immediately after being dequeued, otherwise it is still charged in the original sock. And we still need to retain skb->sk, as eBPF programs may extract sock information from skb->sk. Therefore, we have to call skb_set_owner_sk_safe() here. Fixes:965b57b469("net: Introduce a new proto_ops ->read_skb()") Reported-and-tested-by: syzbot+a0e6f8738b58f7654417@syzkaller.appspotmail.com Tested-by: Stanislav Fomichev <sdf@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.