From owner-freebsd-arm@FreeBSD.ORG Fri Mar 6 16:15:05 2015 Return-Path: Delivered-To: freebsd-arm@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4CCA74DF for ; Fri, 6 Mar 2015 16:15:05 +0000 (UTC) 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 mx1.freebsd.org (Postfix) with ESMTPS id 191FAD76 for ; Fri, 6 Mar 2015 16:15:05 +0000 (UTC) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id t26GF4KX069566 for ; Fri, 6 Mar 2015 16:15:04 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-arm@FreeBSD.org Subject: [Bug 198360] ARMv6 L1 table overflow @ locore-v6.S Date: Fri, 06 Mar 2015 16:15:04 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: arm X-Bugzilla-Version: 11.0-CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: aoyama@peach.ne.jp X-Bugzilla-Status: New X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-arm@FreeBSD.org X-Bugzilla-Target-Milestone: --- 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 attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Mar 2015 16:15:05 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198360 Bug ID: 198360 Summary: ARMv6 L1 table overflow @ locore-v6.S Product: Base System Version: 11.0-CURRENT Hardware: arm OS: Any Status: New Severity: Affects Some People Priority: --- Component: arm Assignee: freebsd-arm@FreeBSD.org Reporter: aoyama@peach.ne.jp Created attachment 153912 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=153912&action=edit locore-v6.diff If define SOCDEV_PA/SOCDEV_VA and VA is located at last 63pages, build_pagetables break after L1 table. As a result kernel symbol is broken, and the kernel will crash. L1 table is overflow by r3 is passed as fixed 64 pages. /usr/src/sys/arm/arm/locore-v6.S 128 /* Map 64MiB, preserved over calls to build_pagetables */ 129 mov r3, #64 137 #if defined(SOCDEV_PA) && defined(SOCDEV_VA) 138 /* Create the custom map used for early_printf(). */ 139 ldr r1, =SOCDEV_PA 140 ldr r2, =SOCDEV_VA 141 bl build_pagetables 142 #endif 342 build_pagetables: 356 mov r4, r3 357 1: 358 str r1, [r0, r2] 359 add r2, r2, #4 360 add r1, r1, #(PTE1_SIZE) 361 adds r4, r4, #-1 362 bhi 1b Attached patch stop at end of L1 table. -- You are receiving this mail because: You are the assignee for the bug.