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Google Summer of Code Ideas (edit)

Revision as of 12:25, 25 January 2026

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* Mentors: Radostin Stoyanov <rstoyanov@fedoraproject.org>, Pavel Tikhomirov <ptikhomirov@virtuozzo.com>

* Suggested by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>

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~~=== Add support for arm64 Guarded Control Stack (GCS) ===~~

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~~'''Summary:''' Support arm64 Guarded Control Stack (GCS)~~

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~~The arm64 Guarded Control Stack (GCS) feature provides support for~~

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~~hardware protected stacks of return addresses, intended to provide~~

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~~hardening against return oriented programming (ROP) attacks and to make~~

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~~it easier to gather call stacks for applications such as profiling (taken from [1]).~~

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~~We would like to support arm64 Guarded Control Stack (GCS) in CRIU, which means~~

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~~that CRIU should be able to Checkpoint/Restore applications using GCS.~~

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~~This task should not require any Linux kernel modifications~~

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~~but will require a lot of effort to understand Linux kernel and~~

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~~glibc support patches. We have a good example of support for~~

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~~x86 shadow stack [4].~~

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~~'''Links:'''~~

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* [1] kernel support https://lore.kernel.org/all/20241001-arm64-gcs-v13-0-222b78d87eee@kernel.org

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* [2] libc support https://inbox.sourceware.org/libc-alpha/20250117174119.3254972-1-yury.khrustalev@arm.com

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* [3] libc tests https://inbox.sourceware.org/libc-alpha/20250210114538.1723249-1-yury.khrustalev@arm.com

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* [4] x86 support https://github.com/checkpoint-restore/criu/pull/2306

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~~'''Details:'''~~

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* Skill level: expert (a lot of moving parts: Linux kernel / libc / CRIU)

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* Language: C

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* Expected size: 350 hours

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* Suggested by: Mike Rapoport <rppt@kernel.org>

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* Mentors: Mike Rapoport <rppt@kernel.org>, Andrei Vagin <avagin@gmail.com>, Alexander Mikhalitsyn <alexander@mihalicyn.com>

== Suspended project ideas ==

Radostin

553

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