From: Carlos Llamas <cmllamas@google.com>
To: kernel-team@android.com, linux-kernel@vger.kernel.org,
Suren Baghdasaryan <surenb@google.com>
Subject: Re: [PATCH v3 0/5] binder: fix issues with mremap()
Date: Tue, 1 Sep 2026 20:41:26 +0000 [thread overview]
Message-ID: <apc4dvbNtPftAFvm@google.com> (raw)
In-Reply-To: <20260901163521.1355535-1-cmllamas@google.com>
On Tue, Sep 01, 2026 at 04:35:13PM +0000, Carlos Llamas wrote:
> This is a follow up series fixing some pre-existing issues found by
> sashiko during a review of an unrelated patchset here:
> https://sashiko.dev/#/patchset/20260813193433.3318288-1-surenb@google.com
>
> The goal is to safely reject mremap() requests on binder's vma to
> prevent pages from temporary leaking and accidental IPC tear-down.
>
> --
Dang! Sashiko keeps finding pre-existing issues. AFAICT, all these are
real issues. It's seems we also, need to reject partial range munmap().
This should be easy though via ->may_split().
I'll send out a v4 with this addition.
--
Carlos Llamas
prev parent reply other threads:[~2026-09-01 20:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 16:35 [PATCH v3 0/5] binder: fix issues with mremap() Carlos Llamas
2026-09-01 16:35 ` [PATCH v3 1/5] binder: set VM_DONTEXPAND Carlos Llamas
2026-09-01 16:35 ` [PATCH v3 2/5] rust_binder: " Carlos Llamas
2026-09-01 16:35 ` [PATCH v3 3/5] binder: check vma->vm_start in binder_vma_close() Carlos Llamas
2026-09-01 16:35 ` [PATCH v3 4/5] binder: reject mremap() Carlos Llamas
2026-09-01 16:35 ` [PATCH v3 5/5] rust_binder: " Carlos Llamas
2026-09-01 20:41 ` Carlos Llamas [this message]
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