On Tue, Dec 22, 2020 at 05:53:11PM -0800, Chang S. Bae wrote:
> The kernel pushes data on the userspace stack when entering a signal. If
> using a sigaltstack(), the kernel precisely knows the user stack size.
^^^
Formulate properly.
>
> When the kernel knows that the user
On Wed, Dec 23, 2020 at 2:57 AM Chang S. Bae wrote:
> The kernel pushes data on the userspace stack when entering a signal. If
> using a sigaltstack(), the kernel precisely knows the user stack size.
>
> When the kernel knows that the user stack is too small, avoid the overflow
> and do an
The kernel pushes data on the userspace stack when entering a signal. If
using a sigaltstack(), the kernel precisely knows the user stack size.
When the kernel knows that the user stack is too small, avoid the overflow
and do an immediate SIGSEGV instead.
This overflow is known to occur on
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