From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 609DAA0032; Mon, 11 Jul 2022 20:00:11 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 47A5440C35; Mon, 11 Jul 2022 20:00:11 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 75C0B40695 for ; Mon, 11 Jul 2022 20:00:09 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 6B25CA00C4; Mon, 11 Jul 2022 20:00:09 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [Bug 1051] l2fwd-event: signal unsafe usage Date: Mon, 11 Jul 2022 18:00:08 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: examples X-Bugzilla-Version: 21.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: minor X-Bugzilla-Who: stephen@networkplumber.org 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-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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 https://bugs.dpdk.org/show_bug.cgi?id=3D1051 Bug ID: 1051 Summary: l2fwd-event: signal unsafe usage Product: DPDK Version: 21.11 Hardware: All OS: All Status: UNCONFIRMED Severity: minor Priority: Normal Component: examples Assignee: dev@dpdk.org Reporter: stephen@networkplumber.org Target Milestone: --- The signal_handler in l2fwd-event uses several functions that are not async-signal-safe. The call to rte_mempool_lookup() in signal_handler could deadlock if interrupted during another lookup. Also updating variable in signal handler should use __atomic_store This is not a bug found by inspection. In practice the code is safe. But examples are used by users to build applications, should be following b= est practices. --=20 You are receiving this mail because: You are the assignee for the bug.=