mirror of
https://github.com/rd-stuffs/msm-4.14.git
synced 2025-02-20 11:45:48 +08:00
f2fs: fix a problem of using memory after free
This patch fix a problem of using memory after free in function __try_merge_extent_node. Fixes: 0f825ee6e873 ("f2fs: add new interfaces for extent tree") Cc: <stable@vger.kernel.org> Signed-off-by: Yunlei He <heyunlei@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
parent
07fe8d4440
commit
7855eba4d6
@ -352,11 +352,12 @@ static struct extent_node *__try_merge_extent_node(struct inode *inode,
|
||||
}
|
||||
|
||||
if (next_ex && __is_front_mergeable(ei, &next_ex->ei)) {
|
||||
if (en)
|
||||
__release_extent_node(sbi, et, prev_ex);
|
||||
next_ex->ei.fofs = ei->fofs;
|
||||
next_ex->ei.blk = ei->blk;
|
||||
next_ex->ei.len += ei->len;
|
||||
if (en)
|
||||
__release_extent_node(sbi, et, prev_ex);
|
||||
|
||||
en = next_ex;
|
||||
}
|
||||
|
||||
|
Loading…
x
Reference in New Issue
Block a user