Patch "scsi: snic: Fix double free in snic_tgt_create()" has been added to the 5.15-stable tree

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

    scsi: snic: Fix double free in snic_tgt_create()

to the 5.15-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-snic-fix-double-free-in-snic_tgt_create.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 1bd3a76880b2bce017987cf53780b372cf59528e Mon Sep 17 00:00:00 2001
From: Zhu Wang <wangzhu9@xxxxxxxxxx>
Date: Sat, 19 Aug 2023 08:39:41 +0000
Subject: scsi: snic: Fix double free in snic_tgt_create()

From: Zhu Wang <wangzhu9@xxxxxxxxxx>

commit 1bd3a76880b2bce017987cf53780b372cf59528e upstream.

Commit 41320b18a0e0 ("scsi: snic: Fix possible memory leak if device_add()
fails") fixed the memory leak caused by dev_set_name() when device_add()
failed. However, it did not consider that 'tgt' has already been released
when put_device(&tgt->dev) is called. Remove kfree(tgt) in the error path
to avoid double free of 'tgt' and move put_device(&tgt->dev) after the
removed kfree(tgt) to avoid a use-after-free.

Fixes: 41320b18a0e0 ("scsi: snic: Fix possible memory leak if device_add() fails")
Signed-off-by: Zhu Wang <wangzhu9@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230819083941.164365-1-wangzhu9@xxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/scsi/snic/snic_disc.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/scsi/snic/snic_disc.c
+++ b/drivers/scsi/snic/snic_disc.c
@@ -317,12 +317,11 @@ snic_tgt_create(struct snic *snic, struc
 			      "Snic Tgt: device_add, with err = %d\n",
 			      ret);
 
-		put_device(&tgt->dev);
 		put_device(&snic->shost->shost_gendev);
 		spin_lock_irqsave(snic->shost->host_lock, flags);
 		list_del(&tgt->list);
 		spin_unlock_irqrestore(snic->shost->host_lock, flags);
-		kfree(tgt);
+		put_device(&tgt->dev);
 		tgt = NULL;
 
 		return tgt;


Patches currently in stable-queue which might be from wangzhu9@xxxxxxxxxx are

queue-5.15/scsi-snic-fix-double-free-in-snic_tgt_create.patch
queue-5.15/scsi-core-raid_class-remove-raid_component_add.patch



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