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Sat, 22 Mar 2025 07:35:38 -0700 (PDT) Received: from [127.0.0.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id ca18e2360f4ac-85e2bc273acsm85798139f.16.2025.03.22.07.35.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 22 Mar 2025 07:35:37 -0700 (PDT) From: Jens Axboe To: io-uring@vger.kernel.org, Pavel Begunkov In-Reply-To: References: Subject: Re: [PATCH] io_uring/net: fix sendzc double notif flush Message-Id: <174265413772.771654.8140235260115879684.b4-ty@kernel.dk> Date: Sat, 22 Mar 2025 08:35:37 -0600 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3-dev-7b9b9 On Sat, 22 Mar 2025 11:47:27 +0000, Pavel Begunkov wrote: > refcount_t: underflow; use-after-free. > WARNING: CPU: 0 PID: 5823 at lib/refcount.c:28 refcount_warn_saturate+0x15a/0x1d0 lib/refcount.c:28 > RIP: 0010:refcount_warn_saturate+0x15a/0x1d0 lib/refcount.c:28 > Call Trace: > > io_notif_flush io_uring/notif.h:40 [inline] > io_send_zc_cleanup+0x121/0x170 io_uring/net.c:1222 > io_clean_op+0x58c/0x9a0 io_uring/io_uring.c:406 > io_free_batch_list io_uring/io_uring.c:1429 [inline] > __io_submit_flush_completions+0xc16/0xd20 io_uring/io_uring.c:1470 > io_submit_flush_completions io_uring/io_uring.h:159 [inline] > > [...] Applied, thanks! [1/1] io_uring/net: fix sendzc double notif flush (no commit info) Best regards, -- Jens Axboe