linux-kernel - Re: ip6_gre: paninc in ip6gre

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Message-ID: <20230530032141.2277902-1-gaoxingwang1@huawei.com>
Date:   Tue, 30 May 2023 11:21:41 +0800
From:   gaoxingwang <gaoxingwang1@...wei.com>
To:     <edumazet@...gle.com>
CC:     <davem@...emloft.net>, <dsahern@...nel.org>,
        <gaoxingwang1@...wei.com>, <liaichun@...wei.com>,
        <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <pabeni@...hat.com>, <yanan@...wei.com>, <yoshfuji@...ux-ipv6.org>
Subject: Re: ip6_gre: paninc in ip6gre_header

>> Hello:
>>   I am doing some fuzz test for kernel, the following crash was triggered.
>>   My kernel version is 5.10.0.Have you encountered similar problems?
>>   If there is a fix, please let me know.
>>   Thank you very much.
>
>Please do not report fuzzer tests on old kernels.
>
>Yes, there is a fix already.

I've found this commit 5796015fa968a(ipv6: allocate enough headroom in ip6_finish_output2()) that I didn't patch for my kernel.
Is this the fix you have mentioned? I'm testing to see if it works, but it will take a few days.I'd appreciate it if you could reply.

>
>Make sure to use at least v5.10.180
>
>Thanks.