linux-kernel - Re: general protection fault in rds_ib_get

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Message-ID: <20180704213506.GH725@sol.localdomain>
Date:   Wed, 4 Jul 2018 14:35:06 -0700
From:   Eric Biggers <ebiggers3@...il.com>
To:     "santosh.shilimkar@...cle.com" <santosh.shilimkar@...cle.com>,
        linux-rdma@...r.kernel.org, rds-devel@....oracle.com
Cc:     syzbot <syzbot+b51c77ef956678a65834@...kaller.appspotmail.com>,
        davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: general protection fault in rds_ib_get_mr

On Sun, May 13, 2018 at 10:46:37PM -0700, santosh.shilimkar@...cle.com wrote:
> On 5/13/18 2:10 PM, Eric Biggers wrote:
> > On Wed, Mar 21, 2018 at 09:00:01AM -0700, syzbot wrote:
> 
> [...]
> 
> 
> > Still reproducible on Linus' tree (commit 66e1c94db3cd4) and linux-next
> > (next-20180511).  Here's a simplified reproducer:
> > 
> Thanks for the test case !!
> 
> Regards,
> Santosh

Ping; this RDS bug is still unfixed.  The same reproducer I gave earlier still
works, even when run as a non-root user.  I tested upstream commit
fc36def997cfd6 (v4.18-rc3-113-gfc36def997cfd), and linux-next commit
bce40927669338 (next-20180704).

- Eric