From owner-freebsd-emulation@freebsd.org Mon Aug 27 07:45:08 2018 Return-Path: Delivered-To: freebsd-emulation@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 5CCE8108FF67 for ; Mon, 27 Aug 2018 07:45:08 +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 EE95F82EEC for ; Mon, 27 Aug 2018 07:45:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id AF72F108FF66; Mon, 27 Aug 2018 07:45:07 +0000 (UTC) Delivered-To: emulation@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 8D906108FF65 for ; Mon, 27 Aug 2018 07:45:07 +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 2FA7882EE7 for ; Mon, 27 Aug 2018 07:45:07 +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 5E44911DF6 for ; Mon, 27 Aug 2018 07:45:06 +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 w7R7j6Zo036593 for ; Mon, 27 Aug 2018 07:45:06 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w7R7j6oD036592 for emulation@FreeBSD.org; Mon, 27 Aug 2018 07:45:06 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 225105] Linux static golang binaries crash at startup Date: Mon, 27 Aug 2018 07:45:06 +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 Only Me X-Bugzilla-Who: yanko.yankulov@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: emulation@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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: 2.1.27 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: Mon, 27 Aug 2018 07:45:08 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225105 Yanko Yankulov changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |yanko.yankulov@gmail.com --- Comment #11 from Yanko Yankulov --- Hi guys, Hit this a few weeks ago haven't notice the ticket, the sysarch call will t= ry to load the arguments from userspace and fail as they are on the kernel sta= ck. A working (but ugly) solution is to duplicate the code in linux_machdep: --- a/sys/amd64/linux/linux_machdep.c +++ b/sys/amd64/linux/linux_machdep.c @@ -240,10 +240,14 @@ linux_arch_prctl(struct thread *td, struct linux_arch_prctl_args *args) error =3D EPERM; break; case LINUX_ARCH_SET_FS: - bsd_args.op =3D AMD64_SET_FSBASE; - bsd_args.parms =3D (void *)args->addr; - error =3D sysarch(td, &bsd_args); - if (error =3D=3D EINVAL) + if (args->addr < VM_MAXUSER_ADDRESS) { + struct pcb *pcb =3D curthread->td_pcb; + set_pcb_flags(pcb, PCB_FULL_IRET); + pcb->pcb_fsbase =3D args->addr; + td->td_frame->tf_fs =3D _ufssel; + error =3D 0; + } + else error =3D EPERM; A better solution will be to change sysarch to accept addition parameter ab= out the location of the memory, but haven't have the time to explore this path = yet. Hope this helps. --=20 You are receiving this mail because: You are the assignee for the bug.=