linux-kernel - Re: [PATCH net] drivers: net: hamradio: Fix suspicious RCU usage warning in bpqether.c

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Date:   Thu, 14 May 2020 17:44:04 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     madhuparnabhowmik10@...il.com
Cc:     allison@...utok.net, tglx@...utronix.de, ap420073@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org, paulmck@...nel.org,
        cai@....pw, joel@...lfernandes.org, frextrite@...il.com
Subject: Re: [PATCH net] drivers: net: hamradio: Fix suspicious RCU usage
 warning in bpqether.c

From: madhuparnabhowmik10@...il.com
Date: Thu, 14 May 2020 19:41:15 +0530

> From: Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>
> 
> This patch fixes the following warning:
> =============================
> WARNING: suspicious RCU usage
> 5.7.0-rc5-next-20200514-syzkaller #0 Not tainted
> -----------------------------
> drivers/net/hamradio/bpqether.c:149 RCU-list traversed in non-reader section!!
> 
> Since rtnl lock is held, pass this cond in list_for_each_entry_rcu().
> 
> Reported-by: syzbot+bb82cafc737c002d11ca@...kaller.appspotmail.com
> Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>

Applied, thanks.