randstruct: Check member structs in is_pure_ops_struct()
commit 60f2c82ed20bde57c362e66f796cf9e0e38a6dbb upstream. While no uses in the kernel triggered this case, it was possible to have a false negative where a struct contains other structs which contain only function pointers because of unreachable code in is_pure_ops_struct(). Signed-off-by: NJoonwon Kang <kjw1627@gmail.com> Link: https://lore.kernel.org/r/20190727155841.GA13586@host Fixes: 313dd1b6 ("gcc-plugins: Add the randstruct plugin") Cc: stable@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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