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From: Roland Dreier <roland@purestorage.com>
To: Eric Biggers <ebiggers3@gmail.com>
Cc: linux-rdma@vger.kernel.org, Doug Ledford <dledford@redhat.com>,
	Jason Gunthorpe <jgg@ziepe.ca>,
	rds-devel@oss.oracle.com,
	syzbot <syzbot+db1c219466daac1083df@syzkaller.appspotmail.com>,
	LKML <linux-kernel@vger.kernel.org>,
	syzkaller-bugs@googlegroups.com
Subject: Re: KASAN: use-after-free Read in __list_add_valid (5)
Date: Tue, 15 May 2018 13:49:23 -0700	[thread overview]
Message-ID: <CAL1RGDVNaJ8OG+4ajmCZN1GnvsZUAqY3LXMRPv57mGSPJyhwAQ@mail.gmail.com> (raw)
In-Reply-To: <20180513230237.GG677@sol.localdomain>

> Still reproducible on Linus' tree (commit 66e1c94db3cd4e) and on linux-next
> (next-20180511).  Here's a simplified reproducer:

Thanks!  That's a fantastic test case.

The issue is a race where rdma_listen() sees invalid state in the
middle of an rdma_bind_addr() call that will ultimately fail.  I'll
send a proposed patch shortly.

 - R.

  reply	other threads:[~2018-05-15 20:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-26  0:01 KASAN: use-after-free Read in __list_add_valid (5) syzbot
2018-05-13 23:02 ` Eric Biggers
2018-05-15 20:49   ` Roland Dreier [this message]
2018-07-04 23:26     ` Eric Biggers
2019-02-20 15:42       ` Dmitry Vyukov

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