Patch "scsi: core: check for device state in __scsi_remove_target()" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

scsi: core: check for device state in __scsi_remove_target()

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
scsi-core-check-for-device-state-in-__scsi_remove_target.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Hannes Reinecke <[email protected]>
Date: Wed, 13 Dec 2017 14:21:37 +0100
Subject: scsi: core: check for device state in __scsi_remove_target()

From: Hannes Reinecke <[email protected]>

commit 81b6c999897919d5a16fedc018fe375dbab091c5 upstream.

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

---
 drivers/scsi/scsi_sysfs.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

@@ -1383,7 +1383,10 @@ static void __scsi_remove_target(struct
 		 * check.
 		 */
 		if (sdev->channel != starget->channel ||
-		    sdev->id != starget->id ||
+		    sdev->id != starget->id)
+			continue;
+		if (sdev->sdev_state == SDEV_DEL ||
+		    sdev->sdev_state == SDEV_CANCEL ||
 		    !get_device(&sdev->sdev_gendev))
 			continue;
 		spin_unlock_irqrestore(shost->host_lock, flags);

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/scsi-core-check-for-device-state-in-__scsi_remove_target.patch