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From: Christoph Hellwig <hch@lst.de>
To: Junichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Christoph Hellwig <hch@lst.de>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	Hannes Reinecke <hare@suse.de>
Subject: Re: [REGRESSION v4.3] scsi_dh: use-after-free when removing scsi device
Date: Thu, 1 Oct 2015 07:21:59 +0200	[thread overview]
Message-ID: <20151001052159.GA14247@lst.de> (raw)
In-Reply-To: <20151001043844.GA8397@xzibit.linux.bs1.fc.nec.co.jp>

On Thu, Oct 01, 2015 at 04:38:45AM +0000, Junichi Nomura wrote:
> But another workload using dm-multipath still caues the same crash.
> I think a patch like the following is needed.
> What do you think?

Thanks Junichi,

I suspected that we should defer the release until we tear down
the sdev instead of unregister time.  Give me a little more time
to review your patch and actually reproduce your issue before a formal
ACK, though.

Any chance you could share all your multipath tests in a git repository
somewhere?  It seems like you're the only one actually having a good
set of reproducable but minimalistic tests.

  reply	other threads:[~2015-10-01  5:22 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-30  0:35 [REGRESSION v4.3] scsi_dh: use-after-free when removing scsi device Junichi Nomura
2015-09-30  9:28 ` Hannes Reinecke
2015-09-30 10:35   ` Boaz Harrosh
2015-09-30 14:49     ` Hannes Reinecke
2015-09-30 15:18 ` Christoph Hellwig
2015-10-01  0:56   ` Junichi Nomura
2015-10-01  4:38     ` Junichi Nomura
2015-10-01  5:21       ` Christoph Hellwig [this message]
2015-10-01 11:40         ` Junichi Nomura
2015-10-04  7:42           ` Christoph Hellwig
2015-10-07  5:55             ` Junichi Nomura
2015-10-04  7:43       ` Christoph Hellwig

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