Date: Mon, 25 Sep 2000 18:55:48 -0700 (PDT) From: "Ronald F. Guilmette" <rfg@monkeys.com> To: FreeBSD-gnats-submit@freebsd.org Subject: ports/21548: libcoro.a (ports) should use MAP_STACK when allocating stacks Message-ID: <200009260155.SAA13285@monkeys.com>
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>Number: 21548 >Category: ports >Synopsis: libcoro.a (ports) should use MAP_STACK when allocating stacks >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-ports >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Sep 25 19:00:01 PDT 2000 >Closed-Date: >Last-Modified: >Originator: Ronald F. Guilmette >Release: FreeBSD 4.1-RELEASE i386 >Organization: Infinite Monkeys & Co. >Environment: >Description: Looking at the source code for coro.c (in the libcoro port) it appears to me that when coro.c is allowed to perform memory allocation for a coroutine stack, it should probably be using the MAP_STACK flag in its call to mmap(), at least on FreeBSD, where this flag is available. (I would say that it should DEFINITELY be using the MAP_STACK flag, but the exact semantics of this flag are not 100% clear from reading the mmap(2) man page.) >How-To-Repeat: look at the source code -- coro.c >Fix: Add the MAP_STACK flag in the call to mmap() in coro.c. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ports" in the body of the message
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