mm/backing-dev.c: fix an error handling path in 'cgwb_create()'

If the 'kmalloc' fails, we must go through the existing error handling path. Signed-off-by: Christophe JAILLET <[email protected]> Fixes: 52ebea7 ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks") Reviewed-by: Jan Kara <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
mrcsosa · Sep 11, 2017 · 0b045bd · 0b045bd
1 parent 09c2c35
commit 0b045bd
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
@@ -569,8 +569,10 @@ static int cgwb_create(struct backing_dev_info *bdi,
 
 	/* need to create a new one */
 	wb = kmalloc(sizeof(*wb), gfp);
-	if (!wb)
-		return -ENOMEM;
+	if (!wb) {
+		ret = -ENOMEM;
+		goto out_put;
+	}
 
 	ret = wb_init(wb, bdi, blkcg_css->id, gfp);
 	if (ret)