lkml.org 
[lkml]   [2022]   [Aug]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH -next] mtd/ftl: Fix memleak in ftl_add_mtd()
From
Date
PING

在 2022/7/15 15:11, Gaosheng Cui 写道:
> When add_mtd_blktrans_dev failed, partition's memory will be freed
> by kfree, but there are some structure members that are allocated
> for memory independently, such as partition->VirtualBlockMap,
> partition->EUNInfo, partition->ZferInfo, and partition->bam_cache,
> so kfree(partition) may cause memory leaks, using ftl_freepart(partition)
> will fix it.
>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
> ---
> drivers/mtd/ftl.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c
> index f655d2905270..200271bdc7aa 100644
> --- a/drivers/mtd/ftl.c
> +++ b/drivers/mtd/ftl.c
> @@ -1031,6 +1031,7 @@ static void ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
> partition->mbd.devnum = -1;
> if (!add_mtd_blktrans_dev(&partition->mbd))
> return;
> + ftl_freepart(partition);
> }
>
> kfree(partition);

\
 
 \ /
  Last update: 2022-08-18 03:32    [W:0.050 / U:0.384 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site