netdev - Re: [PATCH net v2] ipv6: fix suspecious RCU usage warning

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Date:   Wed, 10 Mar 2021 20:50:07 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Wei Wang <weiwan@...gle.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        syzkaller@...glegroups.com, dsahern@...nel.org, idosch@...sch.org,
        petrm@...dia.com, edumazet@...gle.com
Subject: Re: [PATCH net v2] ipv6: fix suspecious RCU usage warning

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Tue,  9 Mar 2021 18:20:35 -0800 you wrote:
> Syzbot reported the suspecious RCU usage in nexthop_fib6_nh() when
> called from ipv6_route_seq_show(). The reason is ipv6_route_seq_start()
> calls rcu_read_lock_bh(), while nexthop_fib6_nh() calls
> rcu_dereference_rtnl().
> The fix proposed is to add a variant of nexthop_fib6_nh() to use
> rcu_dereference_bh_rtnl() for ipv6_route_seq_show().
> 
> [...]

Here is the summary with links:
  - [net,v2] ipv6: fix suspecious RCU usage warning
    https://git.kernel.org/netdev/net/c/28259bac7f1d

You are awesome, thank you!
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