Changeset View
Changeset View
Standalone View
Standalone View
website/content/en/status/report-2022-04-2022-06/shp_rand.adoc
- This file was added.
| === Shared page address randomization | |||||
| Links: + | |||||
| link:https://reviews.freebsd.org/D35392[D35392] link:https://reviews.freebsd.org/D35393[D35393] | |||||
| link:https://reviews.freebsd.org/D35349[D35349] | |||||
| Contact: Kornel Duleba <mindal@semihalf.com> + | |||||
| Contact: Marcin Wojtas <mw@FreeBSD.org> | |||||
| The shared page is an R/X page that is mapped into each process by the image activator. | |||||
| It stores the signal trampoline, as well as other metadata e.g. information needed to implement user space timecounters. | |||||
| Previously it was mapped at the top of the process virtual address space. | |||||
| With the described changes its address will be randomized. | |||||
| We plan to turn the feature on by default for 64bit binaries, across all architectures. | |||||
| Currently the patches are under review and await approval. | |||||
| Sponsor: Stormshield | |||||