Re: [PATCH] x86: fix potential memleak in do_error_trap

Oleg Nesterov
2016-05-23T15:34:01Z

On 05/23, Michal Hocko wrote:
>
> @@ -271,6 +271,7 @@ static void do_error_trap(struct pt_regs *regs, long error_code, char *str,
>
> if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) !=
> NOTIFY_STOP) {
> + memset(&info, 0, sizeof(info));
> cond_local_irq_enable(regs);
> do_trap(trapnr, signr, str, regs, error_code,
> fill_trap_info(regs, signr, trapnr, &info));

at first glance fill_trap_info() initializes everything we will copy
to user-space in copy_siginfo_to_user(__SI_FAULT).

But even if not, shuldn't we change fill_trap_info() instead ?

Oleg.