From owner-freebsd-emulation@freebsd.org Tue Jan 7 20:30:57 2020 Return-Path: Delivered-To: freebsd-emulation@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 DEAB11F209C for ; Tue, 7 Jan 2020 20:30:57 +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 47skXx5b8hz4b4S for ; Tue, 7 Jan 2020 20:30:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id BD9C01F209B; Tue, 7 Jan 2020 20:30:57 +0000 (UTC) Delivered-To: emulation@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 BD61E1F2099 for ; Tue, 7 Jan 2020 20:30:57 +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 47skXx4jcgz4b4R for ; Tue, 7 Jan 2020 20:30:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9C88649BD for ; Tue, 7 Jan 2020 20:30:57 +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 007KUvuR099313 for ; Tue, 7 Jan 2020 20:30:57 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 007KUvYr099312 for emulation@FreeBSD.org; Tue, 7 Jan 2020 20:30:57 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: emulation@FreeBSD.org Subject: [Bug 243155] Linuxulator: broken fadvise64 for 32-bit applications on amd64 Date: Tue, 07 Jan 2020 20:30:57 +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: 12.1-RELEASE X-Bugzilla-Keywords: 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: emulation@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-emulation@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Jan 2020 20:30:57 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243155 --- Comment #3 from Mark Johnston --- I think this is a problem with truss rather than the kernel. Really there's two problems: 1. We don't define distinct syscall argument structures for Linux32 vs Linu= x64. That is, freebsd32_posix_fadvise_args splits the off_t arguments into two fields, but linux_fadvise64_args (used in the Linux32 sysent table) does no= t.=20 So for a posix_fadvise() call in a 32-bit FreeBSD binary on amd64, truss prints: freebsd32_posix_fadvise(0x1,0x2,0x0,0x3,0x0,0x4) ERR#19 'Operation not supported by device' Obviously not perfect either, but at least you can see what's happening. 2. truss doesn't call quad_fixup() on 64-bit platforms even when the target= ABI is freebsd32 or linux32. Otherwise it could fix the splitting that I descr= ibed above and always print four arguments like one would expect. --=20 You are receiving this mail because: You are the assignee for the bug.=