From owner-freebsd-bugs@freebsd.org Tue Feb 19 21:13:01 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 C5A7C14D9ADF for ; Tue, 19 Feb 2019 21:13:00 +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 43D4B741B3 for ; Tue, 19 Feb 2019 21:13:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 001B514D9ADE; Tue, 19 Feb 2019 21:13:00 +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 E1EB014D9ADD for ; Tue, 19 Feb 2019 21:12:59 +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 7E024741B0 for ; Tue, 19 Feb 2019 21:12:59 +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 D3F935282 for ; Tue, 19 Feb 2019 21:12:58 +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 x1JLCwLM088428 for ; Tue, 19 Feb 2019 21:12:58 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x1JLCwnb088419 for bugs@FreeBSD.org; Tue, 19 Feb 2019 21:12:58 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 235846] panic: pmap_demote_pde: firstpte and newpte map different physical addresses Date: Tue, 19 Feb 2019 21:12:58 +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: panic, stress2 X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: markj@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: markj@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: assigned_to 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: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Feb 2019 21:13:01 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235846 Mark Johnston changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|bugs@FreeBSD.org |markj@FreeBSD.org --- Comment #3 from Mark Johnston --- Could you please try to reproduce the panic with the assertion below? We d= on't dump page table pages in minidumps, which makes this one a little harder to track down. diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 94ad7d1d856a..261500adac65 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -4103,6 +4103,8 @@ pmap_demote_pde_locked(pmap_t pmap, pd_entry_t *pde, vm_offset_t va, KASSERT((oldpde & PG_W) =3D=3D 0, ("pmap_demote_pde: page table page for a wired mapping" " is missing")); + KASSERT(mpte !=3D NULL || pmap !=3D kernel_pmap, + ("pmap_demote_pde: missing PT page for va %#lx", va)); /* * Invalidate the 2MB page mapping and return "failure" if = the --=20 You are receiving this mail because: You are the assignee for the bug.=