netdev - Re: [PATCH 2/7] android/binder: use same_thread_group(proc->tsk, current) in binder

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Message-ID: <CAH5fLgjWQ2+eG=DV-m-1ybfs_Mu1UM2Zj0z8LvU4BbE0m9NXvA@mail.gmail.com>
Date: Thu, 18 Dec 2025 12:05:29 +0100
From: Alice Ryhl <aliceryhl@...gle.com>
To: Oleg Nesterov <oleg@...hat.com>
Cc: Todd Kjos <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>, 
	Joel Fernandes <joelagnelf@...dia.com>, Christian Brauner <brauner@...nel.org>, 
	Carlos Llamas <cmllamas@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	Felix Kuehling <Felix.Kuehling@....com>, Alex Deucher <alexander.deucher@....com>, 
	Christian König <christian.koenig@....com>, 
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
	Boris Brezillon <boris.brezillon@...labora.com>, Rob Herring <robh@...nel.org>, 
	Steven Price <steven.price@....com>, Adrián Larumbe <adrian.larumbe@...labora.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, Liviu Dudau <liviu.dudau@....com>, 
	Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org, 
	dri-devel@...ts.freedesktop.org, linux-rdma@...r.kernel.org, 
	netdev@...r.kernel.org
Subject: Re: [PATCH 2/7] android/binder: use same_thread_group(proc->tsk,
 current) in binder_mmap()

On Sun, Dec 7, 2025 at 1:40 PM Oleg Nesterov <oleg@...hat.com> wrote:
>
> With or without this change the checked condition can be falsely true
> if proc->tsk execs, but this is fine: binder_alloc_mmap_handler() checks
> vma->vm_mm == alloc->mm.
>
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>

Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>