From owner-freebsd-bugs@freebsd.org Fri May 3 05:35:19 2019 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EA8B215851B4 for ; Fri, 3 May 2019 05:35:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 8205388AE8 for ; Fri, 3 May 2019 05:35:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 4278B15851B3; Fri, 3 May 2019 05:35:18 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1E79215851B2 for ; Fri, 3 May 2019 05:35:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id AF80A88AE7 for ; Fri, 3 May 2019 05:35:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id D5460ABD5 for ; Fri, 3 May 2019 05:35:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x435ZGZG084087 for ; Fri, 3 May 2019 05:35:16 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x435ZGJ3084086 for bugs@FreeBSD.org; Fri, 3 May 2019 05:35:16 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: bugs@FreeBSD.org Subject: [Bug 237720] tcpip network stack seized for six hours after large high-throughput file transfer Date: Fri, 03 May 2019 05:35:16 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@t.lastninja.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org 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 Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 May 2019 05:35:19 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237720 Bug ID: 237720 Summary: tcpip network stack seized for six hours after large high-throughput file transfer Product: Base System Version: 12.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: freebsd@t.lastninja.net I have a server running FreeBSD 12.0-RELEASE-p3 which has been upgraded over the years, originally starting its life as FreeBSD 8. The firewall (pf/ipfw) has never been enabled. I recently sftp'd a 5GB file from another system to my server at 40-70MB/s = and the transfer completed. Shortly after (about 1-5 minutes) it appears the en= tire tcpip network stack seized and several hours later unseized. I lost connectivity and was unable to SSH to the server. After several hours, the server came back online. Looking at the logs, I came across several lines l= ike this: May 3 09:16:08 redactedhostname sendmail[20886]: x42NFHn5020886: SYSERR(redacteduser): timeout writing message to [127.0.0.1] These were of course cron jobs that were failing and so mail was trying to = be sent. Going by the logs, the networking stack seized for 6 hours. I have experienced this problem before on the same server: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218653 . However it is notable that since that bug has been filed, the server was upgraded with new hardware. I am now using the igb driver for "Intel 82576 Gigabit Network Connection" PCI card. However given that connectivity to the loopback went down, I don't think this issue is related to hardware or a specific NIC dri= ver. --=20 You are receiving this mail because: You are the assignee for the bug.=