Re: [PATCH v3] overcommit_memory: Fix integer overflow and 32-bit limits

Hi all,

The overcommit test uses sum_total, the sum (memory and swap) to test the overcommit settings.

This fixes two problems on 32-bit systems. The first is seen with a integer overflow can occur when calculating sum_total * 2, if the sum_total is larger than 2GB. The second is limited virtual address space (2-3GB) means the test can fail from address space exhaustion before overcommit has been tested.

Now the test runs correctly on low-memory 32-bit systems while avoiding both the overflow bug and virtual address space issues.

Thanks, also this patch merged!

Kind regards, Petr