netdev - Re: [PATCH ipsec] xfrm: fix rcu lock in xfrm_notify

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Date:   Sat, 25 Sep 2021 10:06:15 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Nicolas Dichtel <nicolas.dichtel@...nd.com>
CC:     <syzbot+3d9866419b4aa8f985d6@...kaller.appspotmail.com>,
        <davem@...emloft.net>, <herbert@...dor.apana.org.au>,
        <kuba@...nel.org>, <linux-kernel@...r.kernel.org>,
        <syzkaller-bugs@...glegroups.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH ipsec] xfrm: fix rcu lock in xfrm_notify_userpolicy()

On Wed, Sep 22, 2021 at 10:50:06AM +0200, Nicolas Dichtel wrote:
> As stated in the comment above xfrm_nlmsg_multicast(), rcu read lock must
> be held before calling this function.
> 
> Reported-by: syzbot+3d9866419b4aa8f985d6@...kaller.appspotmail.com
> Fixes: 703b94b93c19 ("xfrm: notify default policy on update")
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>

Applied, thanks Nicolas!