[PATCH 5.10.y] scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()

[Sasha Levin <sashal@kernel.org>]

From: Abdun Nihaal <nihaal@cse.iitm.ac.in>

[ Upstream commit 901a5f309daba412e2a30364d7ec1492fa11c32c ]

Memory allocated for struct vscsiblk_info in scsiback_probe() is not
freed in scsiback_remove() leading to potential memory leaks on remove,
as well as in the scsiback_probe() error paths. Fix that by freeing it
in scsiback_remove().

Cc: stable@vger.kernel.org
Fixes: d9d660f6e562 ("xen-scsiback: Add Xen PV SCSI backend driver")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://patch.msgid.link/20251223063012.119035-1-nihaal@cse.iitm.ac.in
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ adapted void scsiback_remove() to int return type with return 0 statement ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/xen/xen-scsiback.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 9cd4fe8ce6803..fd0ce2f6bbe47 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -1202,6 +1202,7 @@ static int scsiback_remove(struct xenbus_device *dev)
 	gnttab_page_cache_shrink(&info->free_pages, 0);
 
 	dev_set_drvdata(&dev->dev, NULL);
+	kfree(info);
 
 	return 0;
 }
-- 
2.51.0