From owner-freebsd-ports-bugs@freebsd.org Sun Oct 18 07:36:33 2015 Return-Path: Delivered-To: freebsd-ports-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 796B3A18631 for ; Sun, 18 Oct 2015 07:36:33 +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 mx1.freebsd.org (Postfix) with ESMTPS id 656DF355 for ; Sun, 18 Oct 2015 07:36:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id t9I7aX7F085509 for ; Sun, 18 Oct 2015 07:36:33 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-ports-bugs@FreeBSD.org Subject: [Bug 203852] emulators/qemu-user-static: mmap may return NULL instead of MAP_FAILED to indicate error Date: Sun, 18 Oct 2015 07:36:33 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: eugen@grosbein.net X-Bugzilla-Status: New X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: nox@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: maintainer-feedback? X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter flagtypes.name 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-ports-bugs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Ports bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Oct 2015 07:36:33 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203852 Bug ID: 203852 Summary: emulators/qemu-user-static: mmap may return NULL instead of MAP_FAILED to indicate error Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: Individual Port(s) Assignee: nox@FreeBSD.org Reporter: eugen@grosbein.net Flags: maintainer-feedback?(nox@FreeBSD.org) Assignee: nox@FreeBSD.org While using qemu-mips-static to build packages for MIPS32 platform, I have found the following problem: 1) mmap(2) system call returns NULL (0) instead of MAP_FAILED (-1) when len==0. 2) install(1) system utility tries to use mmap() to read source file if it resides on UFS of CD9660 file system and its size is less than 8 megabytes 3) install checks for MAP_FAILED mmap result but not for NULL. Then is passes NULL pointer to write(2) system call and it fails with EFAULT, breaking install(1). 4) print/texinfo is needed to build gmake using HEAD world and texinfo calls install(1) for zero length file. So, install fails and package build fails. How-to-Repeat: use UFS and command "touch file && install file newfile" using qemu-mips-static -- You are receiving this mail because: You are the assignee for the bug.