Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <9bb39c37-0fc9-f4a7-dd4b-897f0a8fae18@gmail.com>
Date:   Thu, 10 Feb 2022 08:39:40 -0800
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
 Thunderbird/91.5.0
Subject: Re: [syzbot] WARNING in mroute_clean_tables
Content-Language: en-US
To:     syzbot <syzbot+a7c030a05218db921de5@syzkaller.appspotmail.com>,
        davem@davemloft.net, dsahern@kernel.org, kuba@kernel.org,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org
References: <000000000000ad4e9c05d7aa7064@google.com>
From:   Eric Dumazet <erdnetdev@gmail.com>
In-Reply-To: <000000000000ad4e9c05d7aa7064@google.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 2/10/22 06:05, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit:    e5313968c41b Merge branch 'Split bpf_sk_lookup remote_port..
> git tree:       bpf-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=141c859a700000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=c40b67275bfe2a58
> dashboard link: https://syzkaller.appspot.com/bug?extid=a7c030a05218db921de5
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=130486f8700000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16d9f758700000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+a7c030a05218db921de5@syzkaller.appspotmail.com


#syz fix: ipmr,ip6mr: acquire RTNL before calling ip[6]mr_free_table() 
on failure path