From nobody Thu Sep 26 22:37:22 2024 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4XF7l63jmHz5X6tg for ; Thu, 26 Sep 2024 22:37:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4XF7l62W6qz4Qbc for ; Thu, 26 Sep 2024 22:37:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1727390242; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; 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Thu, 26 Sep 2024 22:37:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 48QMbMcS039270 for ; Thu, 26 Sep 2024 22:37:22 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 48QMbMgp039269 for net@FreeBSD.org; Thu, 26 Sep 2024 22:37:22 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 281560] gve (4) uma deadlock during high tcp throughput Date: Thu, 26 Sep 2024 22:37:22 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.1-RELEASE X-Bugzilla-Keywords: vendor X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: shailend@google.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D281560 --- Comment #11 from shailend@google.com --- Just a more succinct view of iperf thread 100719's central role in this deadlock: ``` db> show lockchain 100413 thread 100413 (pid 0, gve0 rxq 0) is blocked on lock 0xfffffe00df57a3d0 (sl= eep mutex) "mbuf" thread 100719 (pid 857, iperf) is on a run queue db> show lockchain 100414 thread 100414 (pid 0, gve0 rxq 1) is blocked on lock 0xfffff800b86f8560 (rw) "tcpinp" thread 100706 (pid 857, iperf) is blocked on lock 0xfffffe00df57a3d0 (sleep mutex) "mbuf" thread 100719 (pid 857, iperf) is on a run queue db> show lockchain 100433 thread 100433 (pid 0, gve0 txq 2) is blocked on lock 0xfffffe00df57a3d0 (sl= eep mutex) "mbuf" thread 100719 (pid 857, iperf) is on a run queue db> show lockchain 100419 thread 100419 (pid 0, gve0 rxq 6) is blocked on lock 0xfffff800b8d53020 (rw) "tcpinp" thread 100703 (pid 857, iperf) is blocked on lock 0xfffffe00df57a3d0 (sleep mutex) "mbuf" thread 100719 (pid 857, iperf) is on a run queue ``` --=20 You are receiving this mail because: You are the assignee for the bug.=