From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CE773606A319 for ; Thu, 22 Oct 2026 09:27:44 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AE3F340264; Thu, 22 Oct 2026 11:27:43 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 4000E4003C for ; Thu, 22 Oct 2026 11:27:42 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 306F44CEF8; Thu, 22 Oct 2026 11:27:42 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/core Bug 2069] [dpdk 26.11-rc1] multiprocess/test_multiprocess_symmetric_mp_packet second process coredump Date: Thu, 22 Oct 2026 09:27:42 +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: 26.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: daxuex.gao@intel.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: https://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All X-Archived-By: MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Archive: List-Post: List-Help: List-Subscribe: , X-Spam-Status: No, score=-14.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 https://bugs.dpdk.org/show_bug.cgi?id=3D2069 Bug ID: 2069 Summary: [dpdk 26.11-rc1] multiprocess/test_multiprocess_symmetric_mp_packet second process coredump Product: DPDK Version: 26.11 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: core Assignee: dev@dpdk.org Reporter: daxuex.gao@intel.com Target Milestone: --- Environment =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D DPDK version: 26.11.0-rc1(9a45341f18a1a) OS: Fedora Linux 44 (Forty Four)/Linux 7.2.5-200.fc44.x86_64 Compiler: gcc version 16.2.1 Hardware platform: Intel(R) Xeon(R) Platinum 8490H NIC hardware: Ethernet Controller E810-C for QSFP 1592 [8086:1592 (rev 02)] NIC firmware: 5.01 0x80021f8b 1.4031.0 NIC driver: ice-2.7.4 DDP package: ice comms 1.3.63.0 Test Setup Steps to reproduce =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 1.Build dpdk=20 CC=3Dgcc meson -Dlibdir=3Dlib -Dexamples=3D'multi_process/client_server_mp/mp_server,multi_process/client= _server_mp/mp_client,multi_process/simple_mp,multi_process/symmetric_mp' --default-library=3Dstatic x86_64-native-linuxapp-gcc -Dmax_lcores=3D240 ninja -C x86_64-native-linuxapp-gcc/ 2.Start testpmd dpdk-devbind.py --force --bind=3Dvfio-pci 0000:45:00.0 -a 0000:47:00.0 x86_64-native-linuxapp-gcc/examples/dpdk-symmetric_mp -l 2 -n 4 -a 0000:45:= 00.0 -a 0000:47:00.0 --file-prefix=3Ddpdk_6818_20261022163537 --proc-type= =3Dauto -- -p 0x3 --num-procs=3D2 --proc-id=3D1 x86_64-native-linuxapp-gcc/examples/dpdk-symmetric_mp -l 2 -n 4 -a 0000:45:= 00.0 -a 0000:47:00.0 --file-prefix=3Ddpdk_6818_20261022163537 --proc-type= =3Dauto -- -p 0x3 --num-procs=3D2 --proc-id=3D1 After stopping the first testpmd process, the second process generated a co= re dump: Error result: Segmentation fault (core dumped) x86_64-native-linuxapp-gcc/examples/dpdk-symmetric_mp -l 2 -n 4 -a 0000:45:= 00.0 -a 0000:47:00.0 --file-prefix=3Ddpdk_6818_20261022163537 --proc-type=3Dauto= -- -p 0x3 --num-procs=3D2 --proc-id=3D1 Expected Result: The first testpmd process exits, but the second testpmd process does not ex= it automatically. # x86_64-native-linuxapp-gcc/examples/dpdk-symmetric_mp -l 2 -n 4 -a 0000:45:00.0 -a 0000:47:00.0 --file-prefix=3Ddpdk_6818_20261022163537=20= =20=20=20 --proc-type=3Dauto -- -p=20 ^CPort 0: RX - 0, TX - 0, Drop - 0 Port 1: RX - 0, TX - 0, Drop - 0 # x86_64-native-linuxapp-gcc/examples/dpdk-symmetric_mp -l 2 -n 4 -a 0000:45:00.0 -a 0000:47:00.0 --file-prefix=3Ddpdk_6818_20261022163537=20= =20=20=20 --proc-type=3Dauto -- -p=20 ^CPort 0: RX - 0, TX - 0, Drop - 0 Port 1: RX - 0, TX - 0, Drop - 0 Regression Is this issue a regression: N Bad commit: commit 9a0b3c409db1963a92d0a91868b1e45254845a8c Author: Stephen Hemminger Date: Mon Sep 7 10:03:22 2026 -0700 examples/symmetric_mp: do not print or exit in handler The SIGINT and SIGTERM handler called printf() and exit() which are not async-signal-safe. Set a flag, let the forwarding loops return, and print the stats from main() after joining the lcores. Signed-off-by: Stephen Hemminger Acked-by: Bruce Richardson examples/multi_process/symmetric_mp/main.c | 24 ++++++++++++++++++------ --=20 You are receiving this mail because: You are the assignee for the bug.=