From: Jiayuan Chen <jiayuan.chen@linux.dev>
To: Sechang Lim <rhkrqnwk98@gmail.com>,
"D . Wythe" <alibuda@linux.alibaba.com>,
Dust Li <dust.li@linux.alibaba.com>,
Sidraya Jayagond <sidraya@linux.ibm.com>,
Wenjia Zhang <wenjia@linux.ibm.com>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Mahanta Jambigi <mjambigi@linux.ibm.com>,
Tony Lu <tonylu@linux.alibaba.com>,
Wen Gu <guwen@linux.alibaba.com>, Simon Horman <horms@kernel.org>,
Ursula Braun <ubraun@linux.ibm.com>,
Karsten Graul <kgraul@linux.ibm.com>,
Guvenc Gulce <guvenc@linux.ibm.com>,
linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org
Subject: Re: [PATCH net v2] net/smc: fix out-of-bounds read when sk_user_data holds a sk_psock
Date: Mon, 22 Jun 2026 20:11:30 +0800 [thread overview]
Message-ID: <fcd16335-4494-428b-87e7-854107a429ba@linux.dev> (raw)
In-Reply-To: <20260619150342.3626224-1-rhkrqnwk98@gmail.com>
On 6/19/26 11:03 PM, Sechang Lim wrote:
> SMC stores its smc_sock in the clcsock's sk_user_data tagged
> SK_USER_DATA_NOCOPY and reads it back with smc_clcsock_user_data(), which
> only strips that flag. sockmap stores a sk_psock in the same field tagged
> SK_USER_DATA_NOCOPY | SK_USER_DATA_PSOCK. Nothing keeps both off one
> socket, and SMC then casts the sk_psock to an smc_sock.
How about SK_USER_DATA_BPF
prev parent reply other threads:[~2026-06-22 12:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-19 15:03 [PATCH net v2] net/smc: fix out-of-bounds read when sk_user_data holds a sk_psock Sechang Lim
2026-06-20 15:04 ` sashiko-bot
2026-06-22 12:11 ` Jiayuan Chen [this message]
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