On Wed, Jun 25, 2014 at 11:07 AM, Oleg Nesterov wrote:
> On 06/24, Kees Cook wrote:
>>
>> +static void copy_seccomp(struct task_struct *p)
>> +{
>> +#ifdef CONFIG_SECCOMP
>> + /*
>> + * Must be called with sighand->lock held, which is common to
>> + * all threads in the group. Regard
On 06/25, Oleg Nesterov wrote:
>
> On 06/24, Kees Cook wrote:
> >
> > +static void copy_seccomp(struct task_struct *p)
> > +{
> > +#ifdef CONFIG_SECCOMP
> > + /*
> > +* Must be called with sighand->lock held, which is common to
> > +* all threads in the group. Regardless, nothing special
On 06/24, Kees Cook wrote:
>
> +static void copy_seccomp(struct task_struct *p)
> +{
> +#ifdef CONFIG_SECCOMP
> + /*
> + * Must be called with sighand->lock held, which is common to
> + * all threads in the group. Regardless, nothing special is
> + * needed for the child since it
On 06/24, Kees Cook wrote:
>
> @@ -524,6 +529,8 @@ static long seccomp_set_mode(unsigned long seccomp_mode,
> char __user *filter)
> }
> #endif
>
> + spin_lock_irqsave(¤t->sighand->siglock, irqflags);
> +
Well, I won't argue if you prefer to use _irqsave "just in case".
But irqs must
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