From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD14FC5CFC1 for ; Tue, 11 Aug 2026 09:28:05 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 86F2640E39; Tue, 11 Aug 2026 11:28:04 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id AAEB74027F for ; Tue, 11 Aug 2026 11:28:03 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 9CEFC4BA30; Tue, 11 Aug 2026 11:28:03 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/core Bug 1980] mempool name size assumes ring driver Date: Tue, 11 Aug 2026 09:28:03 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: core X-Bugzilla-Version: 26.07 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mb@smartsharesystems.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org http://bugs.dpdk.org/show_bug.cgi?id=3D1980 Bug ID: 1980 Summary: mempool name size assumes ring driver Product: DPDK Version: 26.07 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: core Assignee: dev@dpdk.org Reporter: mb@smartsharesystems.com Target Milestone: --- When creating a mempool, the length of its name is checked. RTE_MEMPOOL_NAMESIZE defines the max allowed length, and is derived from the names of the memzones created for the mempool. The mempool itself creates a memzone named "MP_name". When using the Ring driver, the driver creates a memzone named "RG_MP_name". This is what RTE_MEMPOOL_NAMESIZE is based on: Max memzone name - strlen("RG_") - strlen("MP_"). Now, when using the Stack driver, the driver creates a memzone named "STK_MP_name". In this case, the RTE_MEMPOOL_NAMESIZE should be one byte less. With a long name, creating the mempool will succeed, but populating it will fail when the mempool driver tries to allocate the memzone for the mempool entries. Reducing RTE_MEMPOOL_NAMESIZE (by one) to consider the memzone name created= by the Stack driver would be an API change, and would not consider other drive= rs possibly using even longer memzone names. --=20 You are receiving this mail because: You are the assignee for the bug.=