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[73.241.150.58]) by smtp.gmail.com with ESMTPSA id i11sm2882977pfd.37.2021.09.04.10.14.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 04 Sep 2021 10:14:40 -0700 (PDT) Subject: Re: WARNING in sk_stream_kill_queues To: Vasily Averin , Eric Dumazet , Hao Sun , davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org References: <9a35a6f2-9373-6561-341c-8933b537122e@virtuozzo.com> <71e8b315-3f3a-85ae-fede-914269a15272@virtuozzo.com> From: Eric Dumazet Message-ID: <606daddf-6ca5-6789-b571-6178100432be@gmail.com> Date: Sat, 4 Sep 2021 10:14:39 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <71e8b315-3f3a-85ae-fede-914269a15272@virtuozzo.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/4/21 7:48 AM, Vasily Averin wrote: > Eric, > this problem is not related to my patches. > I've reproduced the problem locally on orignal kernel with original config, > then I've applied last version of my patch -- but it did not help, issue was reproduced again, > then I've reverted all my patches, see lest below -- and reproduced the problem once again > > Thank you, > Vasily Averin > > b8a0bb68ac30 (HEAD -> net-next-5.15) Revert "ipv6: allocate enough headroom in ip6_finish_output2()" > 1bc2de674a1b Revert "ipv6: ip6_finish_output2: set sk into newly allocated nskb" > 780e2f7d9b93 Revert "skbuff: introduce skb_expand_head()" > 782eaeed9de7 Revert "ipv6: use skb_expand_head in ip6_finish_output2" > 639e9842fc1f Revert "ipv6: use skb_expand_head in ip6_xmit" > 3b16ee164bcd Revert "ipv4: use skb_expand_head in ip_finish_output2" > ab48caf0e632 Revert "vrf: use skb_expand_head in vrf_finish_output" > 4da67a72ceef Revert "ax25: use skb_expand_head" > 9b113a8a62f0 Revert "bpf: use skb_expand_head in bpf_out_neigh_v4/6" > fc4ab503ce8f Revert "vrf: fix NULL dereference in vrf_finish_output()" > OK, thanks for checking. The repro on my host does not trigger the issue, I can not really investigate/bisect.