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([2600:1702:7bd1:29f:8000::1]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1434c745a09sm10347066c88.7.2026.09.09.01.13.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Sep 2026 01:13:34 -0700 (PDT) Message-ID: <297da587-b4bb-4ae2-bdc7-29749144f5ea@gmail.com> Date: Wed, 9 Sep 2026 01:13:33 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] smbdirect: don't hang on netdev reconfiguration Content-Language: en-US To: Stefan Metzmacher , linux-rdma@vger.kernel.org Cc: Leon Romanovsky , Jason Gunthorpe , Namjae Jeon , Paulo Alcantara , Tom Talpey , linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, Ammar Ratnani , Kechen Lu , Mithun Maragiri References: <20260908154454.10966-1-ammrat13@gmail.com> From: Ammar Ratnani In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Thank you for the very quick response, Stefan! > Given you have some automation to reproduce it I'm > wondering if you could also test the iwarp case, see > https://lore.kernel.org/linux-rdma/20260805000159.321645-2-yunseong.kim@est.tech/ I tried running my setup for iWARP. I used the old "bad" kernel, and the only thing I changed was that I used an siw device instead of an rxe. I do not get a hang in that case. To be more precise, I see the following at the end of dmesg: [ 40.006460] siw0: Port: 1 Link DOWN [ 40.012912] siw0: Port: 1 Link ACTIVE But I don't see any message of the form "INFO: task ... blocked for more than ... seconds." Additionally, I'm able to list and read a file off the CIFS mount, even after bringing the interface down and up. For this test, I used commit 2beb1b31a12b ("Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf"). This is a later tree than what I used in my last email, but I confirmed that I get the same behavior I described in that email. Thank you, - Ammar Ratnani