netdev - Re: [syzbot] memory leak in nf_hook_entries

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Message-ID: <20210504082508.GA1019@breakpoint.cc>
Date:   Tue, 4 May 2021 10:25:08 +0200
From:   Florian Westphal <fw@...len.de>
To:     syzbot <syzbot+050de9f900eb45b94ef9@...kaller.appspotmail.com>
Cc:     coreteam@...filter.org, davem@...emloft.net, fw@...len.de,
        kadlec@...filter.org, kuba@...nel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, pablo@...filter.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] memory leak in nf_hook_entries_grow (2)

syzbot <syzbot+050de9f900eb45b94ef9@...kaller.appspotmail.com> wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    9ccce092 Merge tag 'for-linus-5.13-ofs-1' of git://git.ker..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=141aec93d00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5ab124e5617a0cfa
> dashboard link: https://syzkaller.appspot.com/bug?extid=050de9f900eb45b94ef9
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14bd921ed00000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+050de9f900eb45b94ef9@...kaller.appspotmail.com

#syz dup: linux-next test error: WARNING in __nf_unregister_net_hook

(The memory leak is the consequence if the WARNING).