linux-kernel - Re: [syzbot] [net?] possible deadlock in netlink_set

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Message-ID: <20230621131411.6be73cc6@kernel.org>
Date:   Wed, 21 Jun 2023 13:14:11 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     syzbot <syzbot+a7d200a347f912723e5c@...kaller.appspotmail.com>,
        Johannes Berg <johannes@...solutions.net>, bpf@...r.kernel.org,
        davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, pabeni@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] possible deadlock in netlink_set_err

On Wed, 21 Jun 2023 22:05:13 +0200 Eric Dumazet wrote:
> > Doesn't seem like netlink_set_err() wants to be called from just any
> > context. Should we convert nl_table_lock to alwasy be _bh ?
> >  
> 
> Jakub I already sent a fix :
> 
> https://patchwork.kernel.org/project/netdevbpf/patch/20230621154337.1668594-1-edumazet@google.com/

Ah, I didn't spot it, LG!