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md/bitmap: fix memory leak of temporary bitmap

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[ Upstream commit 1383b347a8ae4a69c04ae3746e6cb5c8d38e2585 ]

Callers of get_bitmap_from_slot() are responsible to free the bitmap.

Suggested-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Zhao Heming <heming.zhao@suse.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhao Heming 2020-09-27 13:40:13 +08:00 committed by Greg Kroah-Hartman
parent 44e2bc80a6
commit a47cecbd28
2 changed files with 3 additions and 1 deletions
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3
drivers/md/md-bitmap.c
View File

@ -1954,6 +1954,7 @@ int md_bitmap_load(struct mddev *mddev)
}
EXPORT_SYMBOL_GPL(md_bitmap_load);
/* caller need to free returned bitmap with md_bitmap_free() */
struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot)
{
int rv = 0;
@ -2017,6 +2018,7 @@ int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,
md_bitmap_unplug(mddev->bitmap);
*low = lo;
*high = hi;
md_bitmap_free(bitmap);
return rv;
}
@ -2620,4 +2622,3 @@ struct attribute_group md_bitmap_group = {
.name = "bitmap",
.attrs = md_bitmap_attrs,
};

1
drivers/md/md-cluster.c
View File

@ -1166,6 +1166,7 @@ static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz
* can't resize bitmap
*/
goto out;
md_bitmap_free(bitmap);
}
return 0;