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Wed, 2 Sep 2026 15:31:36 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id IMbnMVhBmGqOVgAAD6G6ig (envelope-from ); Wed, 02 Sep 2026 15:31:36 +0000 From: Gabriel Krisman Bertazi To: Aohan Mei , io-uring@vger.kernel.org Cc: axboe@kernel.dk, Aohan Mei , TencentOS Corvus AI , stable@vger.kernel.org Subject: Re: [PATCH] io_uring/net: commit all consumed buffers on bundle recv retry In-Reply-To: <20260902022552.1890610-1-ljp1205831794@gmail.com> Organization: SUSE References: <20260902022552.1890610-1-ljp1205831794@gmail.com> Date: Wed, 02 Sep 2026 12:31:34 -0300 Message-ID: <871pbb7jqh.fsf@mailhost.krisman.be> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -4.51 X-Rspamd-Queue-Id: D17DF1F7B8 X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Level: X-Rspamd-Action: no action X-Spamd-Result: default: False [-4.51 / 50.00]; BAYES_HAM(-3.00)[99.98%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; HAS_ORG_HEADER(0.00)[]; MIME_TRACE(0.00)[0:+]; MISSING_XM_UA(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_SOME(0.00)[]; FREEMAIL_TO(0.00)[gmail.com,vger.kernel.org]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[6]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.de:dkim]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+] X-Spam-Flag: NO Aohan Mei writes: > This leaves bl->head accounting for only the first partial round > rather than all consumed buffers. Buffers that already hold > received data stay visible in the ring and are handed out again > to later requests, corrupting or dropping application data. Hi, Aohan. Do you have a reproducer for this issue? -- Gabriel Krisman Bertazi