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ubi: fastmap: Free fastmap next anchor peb during detach 

ubi_wl_entry related with the fm_next_anchor PEB is not freed during
detach, which causes a memory leak.
Don't forget to release fm_next_anchor PEB while detaching ubi from
mtd when CONFIG_MTD_UBI_FASTMAP is enabled.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Fixes: 4b68bf9a69 ("ubi: Select fastmap anchor PEBs considering...")
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Zhihao Cheng 2020-07-07 21:41:01 +08:00 committed by Richard Weinberger
parent 3b185255bb
commit c3fc1a3919
1 changed files with 5 additions and 0 deletions
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5
drivers/mtd/ubi/fastmap-wl.c
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@ -381,6 +381,11 @@ static void ubi_fastmap_close(struct ubi_device *ubi)
ubi->fm_anchor = NULL;
}
if (ubi->fm_next_anchor) {
return_unused_peb(ubi, ubi->fm_next_anchor);
ubi->fm_next_anchor = NULL;
}
if (ubi->fm) {
for (i = 0; i < ubi->fm->used_blocks; i++)
kfree(ubi->fm->e[i]);