From 83114df32ae779df57e0af99a8ba6c3968b2ba3d Mon Sep 17 00:00:00 2001 From: Miaoqian Lin Date: Thu, 20 Jan 2022 10:10:25 +0000 Subject: block: fix memory leak in disk_register_independent_access_ranges kobject_init_and_add() takes reference even when it fails. According to the doc of kobject_init_and_add() If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Fix this issue by adding kobject_put(). Callback function blk_ia_ranges_sysfs_release() in kobject_put() can handle the pointer "iars" properly. Fixes: a2247f19ee1c ("block: Add independent access ranges support") Signed-off-by: Miaoqian Lin Reviewed-by: Damien Le Moal Link: https://lore.kernel.org/r/20220120101025.22411-1-linmq006@gmail.com Signed-off-by: Jens Axboe --- block/blk-ia-ranges.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block') diff --git a/block/blk-ia-ranges.c b/block/blk-ia-ranges.c index b925f3db3ab7..18c68d8b9138 100644 --- a/block/blk-ia-ranges.c +++ b/block/blk-ia-ranges.c @@ -144,7 +144,7 @@ int disk_register_independent_access_ranges(struct gendisk *disk, &q->kobj, "%s", "independent_access_ranges"); if (ret) { q->ia_ranges = NULL; - kfree(iars); + kobject_put(&iars->kobj); return ret; } -- cgit v1.2.3