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Subject[PATCH] UBI: fastmap: fix a mem leak on error path
Date
If the scan_pool() function fails, the "free" list is not freed.
This leads to destroy_ai(ai) complaining with:
"kmem_cache_destroy ubi_ainf_peb_slab: Slab cache still has objects"

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
---
drivers/mtd/ubi/fastmap.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 05067f5..22eb527 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -841,6 +841,10 @@ static int ubi_attach_fastmap(struct ubi_device *ubi,
fail_bad:
ret = UBI_BAD_FASTMAP;
fail:
+ list_for_each_entry_safe(tmp_aeb, _tmp_aeb, &free, u.list) {
+ kmem_cache_free(ai->aeb_slab_cache, tmp_aeb);
+ list_del(&tmp_aeb->u.list);
+ }
return ret;
}

--
1.7.10.4


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