From: Roman Gushchin <roman.gushchin@linux.dev>
To: Kees Cook <keescook@chromium.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Shakeel Butt <shakeelb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@suse.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Tom Rix <trix@redhat.com>, Yosry Ahmed <yosryahmed@google.com>,
Yu Zhao <yuzhao@google.com>, Miaohe Lin <linmiaohe@huawei.com>,
Yafang Shao <laoar.shao@gmail.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Qi Zheng <zhengqi.arch@bytedance.com>,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH] mm/memcg: Annotate struct mem_cgroup_threshold_ary with __counted_by
Date: Fri, 22 Sep 2023 15:25:34 -0700 [thread overview]
Message-ID: <ZQ4UXsxrFfNTNsM7@P9FQF9L96D.corp.robot.car> (raw)
In-Reply-To: <20230922175327.work.985-kees@kernel.org>
On Fri, Sep 22, 2023 at 10:53:28AM -0700, Kees Cook wrote:
> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
>
> As found with Coccinelle[1], add __counted_by for struct mem_cgroup_threshold_ary.
>
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Shakeel Butt <shakeelb@google.com>
> Cc: Roman Gushchin <roman.gushchin@linux.dev>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
> Cc: Michal Hocko <mhocko@suse.com>
> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
> Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Thanks!
next prev parent reply other threads:[~2023-09-22 22:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-22 17:53 Kees Cook
2023-09-22 18:25 ` Shakeel Butt
2023-09-22 18:32 ` Kees Cook
2023-09-22 19:11 ` Shakeel Butt
2023-09-22 22:25 ` Roman Gushchin [this message]
2023-09-23 17:03 ` Gustavo A. R. Silva
2023-09-25 7:09 ` Michal Hocko
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