From owner-freebsd-bugs@freebsd.org Tue Mar 23 20:56:21 2021 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 241C35BBDAD for ; Tue, 23 Mar 2021 20:56:21 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4F4kDj0MjCz4RSn for ; Tue, 23 Mar 2021 20:56:21 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 0CA125BBF12; Tue, 23 Mar 2021 20:56:21 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 0C6C55BBAEE for ; Tue, 23 Mar 2021 20:56:21 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F4kDh6q8Lz4RNQ for ; Tue, 23 Mar 2021 20:56:20 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D2B3527E08 for ; Tue, 23 Mar 2021 20:56:20 +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 12NKuKU5054659 for ; Tue, 23 Mar 2021 20:56:20 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 12NKuKqG054658 for bugs@FreeBSD.org; Tue, 23 Mar 2021 20:56:20 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 254514] vnet: /sbin/ifconfig epair10b vnet $name getting stuck if one CPU is busy Date: Tue, 23 Mar 2021 20:56:21 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: misc X-Bugzilla-Version: 13.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: me@igalic.co 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: 2.1.34 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Mar 2021 20:56:21 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254514 Bug ID: 254514 Summary: vnet: /sbin/ifconfig epair10b vnet $name getting stuck if one CPU is busy Product: Base System Version: 13.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: misc Assignee: bugs@FreeBSD.org Reporter: me@igalic.co This bug bubbled up as a side-effect to: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254513 jail startup is stuck at: /sbin/ifconfig epair10b vnet $name when we run procstat kstack, we see for the different jails: 913 100682 ifconfig - mi_switch _sx_xlock_ha= rd epoch_drain_callbacks if_detach_internal if_vmove ifhwioctl ifioctl kern_io= ctl sys_ioctl amd64_syscall fast_syscall_common=20 835 100475 ifconfig - mi_switch sched_bind epoch_drain_callbacks if_detach_internal if_vmove ifhwioctl ifioctl kern_io= ctl sys_ioctl amd64_syscall fast_syscall_common=20 similarly, trying to destroy an epair also gets stuck: 1119 100988 ifconfig - mi_switch _sx_xlock_ha= rd epoch_drain_callbacks if_detach_internal if_detach epair_clone_destroy if_clone_destroyif if_clone_destroy ifioctl kern_ioctl sys_ioctl amd64_sysc= all fast_syscall_common=20 given that this is a side-effect of 1 CPU core being 100% busy, does this m= ean that draining callbacks needs all CPUs? --=20 You are receiving this mail because: You are the assignee for the bug.=