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Date: Mon, 17 Aug 2026 16:23:35 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Fan Gong <gongfan1@huawei.com>
Cc: Teng Peisen <tengpeisen@huawei.com>, Wu Di <wudi234@huawei.com>,
 <netdev@vger.kernel.org>, "David S. Miller" <davem@davemloft.net>, Eric
 Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>, Simon
 Horman <horms@kernel.org>, Andrew Lunn <andrew+netdev@lunn.ch>, Larysa
 Zaremba <larysa.zaremba@intel.com>, <linux-kernel@vger.kernel.org>,
 <linux-doc@vger.kernel.org>, Chen Anwen <chenanwen@huawei.com>, He Wei
 <august.hewei@huawei.com>, Zhang Min <zhangmin548@huawei.com>, luosifu
 <luosifu@huawei.com>, Xin Guo <guoxin09@huawei.com>, Zhou Shuai
 <zhoushuai28@huawei.com>, Wu Like <wulike1@huawei.com>, Shi Jing
 <shijing34@huawei.com>
Subject: Re: [PATCH net v04] hinic3: Fix skb linearization mismatch and drop
 skb when skb_checksum_help() failed
Message-ID: <20260817162335.74d22485@kernel.org>
In-Reply-To: <78d8c61cab588240948eaddcb437d59add9f77ae.1786448013.git.tengpeisen@huawei.com>
References: <78d8c61cab588240948eaddcb437d59add9f77ae.1786448013.git.tengpeisen@huawei.com>
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On Tue, 11 Aug 2026 19:43:59 +0800 Fan Gong wrote:
> Previously, hinic3_send_one_skb() cached the skb fragment count before
> calling hinic3_tx_offload(). If hinic3_tx_csum() falls back to
> skb_checksum_help() for unsupported tunnel packets, the skb may be
> linearized. Continuing to build the TX descriptor with the stale
> fragment count leads to a descriptor mismatch, which can trigger
> out-of-bounds DMA reads or IOMMU faults.

Applied, thanks!
-- 
pw-bot: accept