From: sashiko-bot@kernel.org
To: "Serhat Kumral" <serhatkumral1@gmail.com>
Cc: linux-rdma@vger.kernel.org
Subject: Re: [PATCH] RDMA/mthca: Fix off-by-one in mthca_map_user_db()
Date: Fri, 23 Oct 2026 19:31:42 +0000 [thread overview]
Message-ID: <sashiko-outbox-183119@kernel.org> (raw)
In-Reply-To: <20261023192348.11070-1-serhatkumral1@gmail.com>
> db_tab->page[] has uarc_size / MTHCA_ICM_PAGE_SIZE elements, so valid
> doorbell indices are in the range [0, uarc_size / 8 - 1]. Allowing
> index == uarc_size / 8 results in an out-of-bounds access at
> db_tab->page[npages]. Use '>=' instead of '>' in the bounds check.
>
> Fixes: 56483ec1b702 ("[PATCH] IB uverbs: add mthca user doorbell record support")
> Signed-off-by: Serhat Kumral <serhatkumral1@gmail.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261023192348.11070-1-serhatkumral1@gmail.com?part=1
next prev parent reply other threads:[~2026-10-23 19:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-23 19:23 [PATCH] RDMA/mthca: Fix off-by-one in mthca_map_user_db() Serhat Kumral
2026-10-23 19:31 ` sashiko-bot [this message]
2026-10-26 2:49 ` Chenguang Zhao
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