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Message-ID: <563898A5.9050200@gmail.com> Date: Tue, 3 Nov 2015 09:21:09 -0200 From: Marcelo Ricardo Leitner <marcelo.leitner@...il.com> To: Cong Wang <cwang@...pensource.com>, Sasha Levin <sasha.levin@...cle.com> Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, LKML <linux-kernel@...r.kernel.org>, syzkaller@...glegroups.com, Dmitry Vyukov <dvyukov@...gle.com> Subject: Re: net: lockdep warning in ip_mc_msfget (net/ipv4/igmp.c:2400) Em 02-11-2015 22:38, Cong Wang escreveu: > On Mon, Nov 2, 2015 at 1:31 PM, Cong Wang <cwang@...pensource.com> wrote: >> >> Good catch! >> >> This is probably introduced by: >> >> commit baf606d9c9b12517e47e0d1370e8aa9f7323f210 >> Author: Marcelo Ricardo Leitner <marcelo.leitner@...il.com> >> Date: Wed Mar 18 14:50:42 2015 -0300 >> >> ipv4,ipv6: grab rtnl before locking the socket Yes, that commit introduced this inverse order situation by not fixing the get path of it. >> I am thinking what is the right way to fix it... > > Please try the attached patch. > > Thanks! Patch LGTM, same design and covered all rtnl_lock()s I could find on get path now. Thanks! Marcelo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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