| Message ID | 4E1E5F70.4030504@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a3c4751..08a4580 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1755,11 +1755,10 @@ static noinline int btrfs_search_path_in_tree(struct btrfs_fs_info *info, key.objectid = key.offset; key.offset = (u64)-1; dirid = key.objectid; - } if (ptr < name) goto out; - memcpy(name, ptr, total_len); + memmove(name, ptr, total_len); name[total_len]='\0'; ret = 0; out:
Memory areas [ptr, ptr+total_len] and [name, name+total_len] may overlap, so it's wrong to use memcpy(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> --- fs/btrfs/ioctl.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-)