netdev - Re: KASAN: use-after-free Read in rds_tcp

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Message-ID: <20180214152109.GF11528@oracle.com>
Date:   Wed, 14 Feb 2018 10:21:09 -0500
From:   Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     syzbot <syzbot+bbd8e9a06452cc48059b@...kaller.appspotmail.com>,
        David Miller <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>, linux-rdma@...r.kernel.org,
        netdev <netdev@...r.kernel.org>, rds-devel@....oracle.com,
        Santosh Shilimkar <santosh.shilimkar@...cle.com>,
        syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in rds_tcp_tune

On (02/14/18 16:11), Dmitry Vyukov wrote:
> 
> Hi Sowmini,
> 
> Was this ever fixed? What's the fix? This still hangs as open. Please
> provide "syz fix" tag.

Are you still seeing this problem?

I had expected that the changes around rds_destroy_pending - see commit
ebeeb1ad9b8a - would have taken care of this (note that ebeeb1ad9b8a
refactors/updates 3db6e0d172c9) but those fixes were done by inspection
only. In other words, I was never able to reproduce this, so we may
still have missed some race condition.

--Sowmini