From owner-freebsd-bugs@freebsd.org Tue Apr 10 05:28:14 2018 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 026C3FA1AB5 for ; Tue, 10 Apr 2018 05:28:14 +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 8E1A87D8CA for ; Tue, 10 Apr 2018 05:28:13 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 47FDDFA1AB0; Tue, 10 Apr 2018 05:28:13 +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 33F91FA1AAF for ; Tue, 10 Apr 2018 05:28:13 +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 TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id AFEA97D8C6 for ; Tue, 10 Apr 2018 05:28:12 +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 0F76557F6 for ; Tue, 10 Apr 2018 05:28:12 +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 w3A5SBuK026235 for ; Tue, 10 Apr 2018 05:28:11 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w3A5SBUl026231 for bugs@FreeBSD.org; Tue, 10 Apr 2018 05:28:11 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 227404] UP FreeBSD VM always hangs on reboot since 20180329-r331740 Date: Tue, 10 Apr 2018 05:28:12 +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: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: avg@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@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 MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Apr 2018 05:28:14 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D227404 --- Comment #3 from Andriy Gapon --- (In reply to Dexuan Cui from comment #0) I have observed a similar (perhaps the same issue) on real multi-core hardw= are but with the SMP kernel (GENERIC) when all APs were disabled via hints (hint.lapic.%d.disabled=3D1). The reboot got stuck and a thread doing it was in this state: db> bt Tracing pid 1 tid 100002 td 0xfffff80003230560 sched_switch() at sched_switch+0x95c/frame 0xfffffe00213b9880 mi_switch() at mi_switch+0x188/frame 0xfffffe00213b98b0 sleepq_switch() at sleepq_switch+0x10d/frame 0xfffffe00213b98f0 sleepq_timedwait() at sleepq_timedwait+0x50/frame 0xfffffe00213b9930 _sleep() at _sleep+0x2fa/frame 0xfffffe00213b99d0 kproc_suspend() at kproc_suspend+0x9a/frame 0xfffffe00213b9a00 kproc_shutdown() at kproc_shutdown+0x4e/frame 0xfffffe00213b9a20 kern_reboot() at kern_reboot+0x19e/frame 0xfffffe00213b9a60 sys_reboot() at sys_reboot+0x3ab/frame 0xfffffe00213b9ac0 amd64_syscall() at amd64_syscall+0x79b/frame 0xfffffe00213b9bf0 fast_syscall_common() at fast_syscall_common+0x105/frame 0xfffffe00213b9bf0 I didn't examine other threads much. --=20 You are receiving this mail because: You are the assignee for the bug.=