netdev - Re: KASAN: slab-out-of-bounds Read in rds_cong_queue

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Date:   Mon, 19 Mar 2018 02:37:08 -0400
From:   Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     syzbot <syzbot+80c06fb3aabfa386bc06@...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: slab-out-of-bounds Read in rds_cong_queue_updates

On (03/19/18 09:29), Dmitry Vyukov wrote:
> 
> This looks the same as:
> 
> #syz dup: KASAN: use-after-free Read in rds_cong_queue_updates

correct, seems like the rds_destroy_pending() fixes did not seal
this race condition. I need to look at this more carefully to see
what race I missed.. no easy answer here, I am afraid.

--Sowmini