| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 276/717] f2fs: fix double free of unicode map | Date | Mon, 28 Dec 2020 13:44:34 +0100 |
| |
From: Hyeongseok Kim <hyeongseok@gmail.com>
[ Upstream commit 89ff6005039a878afac87889fee748fa3f957c3a ]
In case of retrying fill_super with skip_recovery, s_encoding for casefold would not be loaded again even though it's already been freed because it's not NULL. Set NULL after free to prevent double freeing when unmount.
Fixes: eca4873ee1b6 ("f2fs: Use generic casefolding support") Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- fs/f2fs/super.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 00eff2f518079..fef22e476c526 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3918,6 +3918,7 @@ free_bio_info: #ifdef CONFIG_UNICODE utf8_unload(sb->s_encoding); + sb->s_encoding = NULL; #endif free_options: #ifdef CONFIG_QUOTA -- 2.27.0
|