Re: [PATCH] scsi: check for device state in __scsi_remove_target()

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To: Hannes Reinecke <hare@xxxxxxx>
Subject: Re: [PATCH] scsi: check for device state in __scsi_remove_target()
From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Date: Mon, 18 Dec 2017 22:37:13 -0500
Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, James Bottomley <james.bottomley@xxxxxxxxxxxxxxxxxxxxx>, linux-scsi@xxxxxxxxxxxxxxx, Hannes Reinecke <hare@xxxxxxxx>
In-reply-to: <1513171297-58020-1-git-send-email-hare@suse.de> (Hannes Reinecke's message of "Wed, 13 Dec 2017 14:21:37 +0100")
Organization: Oracle Corporation
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

Hannes,

> As it turned out device_get() doesn't use kref_get_unless_zero(),
> so we will be always getting a device pointer.
> So we need to check for the device state in __scsi_remove_target()
> to avoid tripping over deleted objects.

Applied to 4.15/scsi-fixes. Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering

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- [PATCH] scsi: check for device state in __scsi_remove_target()
  - From: Hannes Reinecke

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