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block: fix memory leak in disk_register_independent_access_ranges

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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: a2247f19ee ("block: Add independent access ranges support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Link: https://lore.kernel.org/r/20220120101025.22411-1-linmq006@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Miaoqian Lin 2022-01-20 10:10:25 +00:00 committed by Jens Axboe
parent dd81e1c7d5
commit 83114df32a
1 changed files with 1 additions and 1 deletions
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2
block/blk-ia-ranges.c
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@ -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;
}