From owner-freebsd-bugs@freebsd.org Mon Mar 16 20:00:54 2020 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 9E9A426E1EC for ; Mon, 16 Mar 2020 20:00:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 48h6cQ3pXWz47Ng for ; Mon, 16 Mar 2020 20:00:54 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 8231E26E1EB; Mon, 16 Mar 2020 20:00:54 +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 81E4826E1EA for ; Mon, 16 Mar 2020 20:00:54 +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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48h6cQ2yYHz47Nd for ; Mon, 16 Mar 2020 20:00:54 +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) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 6112C25A6F for ; Mon, 16 Mar 2020 20:00:54 +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 02GK0s6R052511 for ; Mon, 16 Mar 2020 20:00:54 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 02GK0s9O052495 for bugs@FreeBSD.org; Mon, 16 Mar 2020 20:00:54 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 244852] Crash in sysctl(3) after call to "sysctl -a | grep ..." Date: Mon, 16 Mar 2020 20:00:54 +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: 11.3-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: juraj@lutter.sk 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: Mon, 16 Mar 2020 20:00:54 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244852 Bug ID: 244852 Summary: Crash in sysctl(3) after call to "sysctl -a | grep ..." Product: Base System Version: 11.3-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: juraj@lutter.sk Hi, after a call to "sysctl -a | grep maxconn", the box panicked with: Mar 16 20:53:28 one kernel: Fatal trap 12: page fault while in kernel mode Mar 16 20:53:28 one kernel: cpuid =3D 6; apic id =3D 06 Mar 16 20:53:28 one kernel: fault virtual address =3D 0x6fb0076 Mar 16 20:53:28 one kernel: fault code =3D supervisor read data, p= age not present Mar 16 20:53:28 one kernel: instruction pointer =3D 0x20:0xffffffff80e07200 Mar 16 20:53:28 one kernel: stack pointer =3D 0x28:0xfffffe0c58ad1830 Mar 16 20:53:28 one kernel: frame pointer =3D 0x28:0xfffffe0c58ad18a0 Mar 16 20:53:28 one kernel: code segment =3D base 0x0, limit 0xfffff, type 0x1b Mar 16 20:53:28 one kernel: =3D DPL 0, pres 1, long 1, = def32 0, gran 1 Mar 16 20:53:28 one kernel: processor eflags =3D interrupt enabled, resu= me, IOPL =3D 0 Mar 16 20:53:28 one kernel: current process =3D 64224 (sysctl) Mar 16 20:53:28 one kernel: trap number =3D 12 Mar 16 20:53:28 one kernel: panic: page fault Mar 16 20:53:28 one kernel: cpuid =3D 6 Mar 16 20:53:28 one kernel: KDB: stack backtrace: Mar 16 20:53:28 one kernel: #0 0xffffffff80b4c437 at kdb_backtrace+0x67 Mar 16 20:53:28 one kernel: #1 0xffffffff80b0544e at vpanic+0x17e Mar 16 20:53:28 one kernel: #2 0xffffffff80b052c3 at panic+0x43 Mar 16 20:53:28 one kernel: #3 0xffffffff80f895c9 at trap_fatal+0x369 Mar 16 20:53:28 one kernel: #4 0xffffffff80f89629 at trap_pfault+0x49 Mar 16 20:53:28 one kernel: #5 0xffffffff80f88cad at trap+0x29d Mar 16 20:53:28 one kernel: #6 0xffffffff80f68d7c at calltrap+0x8 Mar 16 20:53:28 one kernel: #7 0xffffffff80b128bb at sysctl_root_handler_locked+0x8b Mar 16 20:53:28 one kernel: #8 0xffffffff80b12112 at sysctl_root+0x1f2 Mar 16 20:53:28 one kernel: #9 0xffffffff80b12636 at userland_sysctl+0x136 Mar 16 20:53:28 one kernel: #10 0xffffffff80b124bf at sys___sysctl+0x5f Mar 16 20:53:28 one kernel: #11 0xffffffff80f8a6c6 at amd64_syscall+0xa86 Mar 16 20:53:28 one kernel: #12 0xffffffff80f6965d at fast_syscall_common+0= x101 How can this be tracked to the root cause? This is a production box and I c= an't afford to do extensive debugging, unfortunately. Thanks a lot. --=20 You are receiving this mail because: You are the assignee for the bug.=