[PATCH 2/2] x86/mmap: handle worst-case heap randomization in mmap_base
alisaidi at amazon.com
Sun Mar 17 08:52:08 PDT 2019
> On Mar 13, 2019, at 11:26 AM, Dave Hansen <dave.hansen at intel.com> wrote:
>> On 3/12/19 10:32 AM, Ali Saidi wrote:
>> + /* Provide space for brk randomization */
>> + pad += SZ_32M;
> Just curious: Why is the padding in your other patch conditional on the
> 32-bit vs. 64-bit apps, but here it's always 32M?
Arm changes the amount of brk based on the process being 32 vs 64 bit. X86 doesn’t appear to do this.
> Also, did you hit this problem in practice somehow?
Just debugging a crash when testing a version of a library I compiled.
More information about the linux-arm-kernel