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authorHyeongseok Kim <hyeongseok@gmail.com>2020-11-12 18:14:54 +0900
committerJaegeuk Kim <jaegeuk@kernel.org>2020-12-02 22:00:20 -0800
commit89ff6005039a878afac87889fee748fa3f957c3a (patch)
treeae2e80cc688249a28f8a2c6e25a431bccf4d78e8 /fs
parent34178b1bc4b5c936eab3adb4835578093095a571 (diff)
f2fs: fix double free of unicode map
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>
Diffstat (limited to 'fs')
-rw-r--r--fs/f2fs/super.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 00eff2f51807..fef22e476c52 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