Re: [PATCH v10 4/5] rust: drm: gem: Introduce shmem::SGTable

Lyude Paul
2026-04-21T23:04:40Z

On Thu, 2026-04-09 at 15:57 -0700, Deborah Brouwer wrote:
> But the Rust Object<T> still has the sgt_res. So, at the end of free_callback(), KBox::from_raw(this) triggers
> SGTableMap::drop(), and that calls __drm_gem_shmem_free_sgt_locked() again for the same shmem object.

Thank you for testing this! Luckily I think the actual cause of this problem
is quite simple - we just need to change the order of the struct members for
Object to make sure that sgt_res is released before the actual object itself
:)

Will make sure this gets fixed in the next respin

--
Cheers,
Lyude Paul (she/her)
Senior Software Engineer at Red Hat

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