From owner-cvs-src-old@FreeBSD.ORG Fri Sep 10 17:28:33 2010 Return-Path: Delivered-To: cvs-src-old@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AFB62106566C for ; Fri, 10 Sep 2010 17:28:33 +0000 (UTC) (envelope-from mdf@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by mx1.freebsd.org (Postfix) with ESMTP id 827FA8FC19 for ; Fri, 10 Sep 2010 17:28:33 +0000 (UTC) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.14.4/8.14.4) with ESMTP id o8AHSXta012931 for ; Fri, 10 Sep 2010 17:28:33 GMT (envelope-from mdf@repoman.freebsd.org) Received: (from svn2cvs@localhost) by repoman.freebsd.org (8.14.4/8.14.4/Submit) id o8AHSXZn012930 for cvs-src-old@freebsd.org; Fri, 10 Sep 2010 17:28:33 GMT (envelope-from mdf@repoman.freebsd.org) Message-Id: <201009101728.o8AHSXZn012930@repoman.freebsd.org> X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to mdf@repoman.freebsd.org using -f From: Matthew D Fleming Date: Fri, 10 Sep 2010 17:26:41 +0000 (UTC) To: cvs-src-old@freebsd.org X-FreeBSD-CVS-Branch: RELENG_8 Subject: cvs commit: src/share/man/man9 memguard.9 src/sys/kern kern_malloc.c src/sys/vm memguard.c memguard.h vm_extern.h vm_kern.c X-BeenThere: cvs-src-old@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: **OBSOLETE** CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Sep 2010 17:28:33 -0000 mdf 2010-09-10 17:26:41 UTC FreeBSD src repository Modified files: (Branch: RELENG_8) share/man/man9 memguard.9 sys/kern kern_malloc.c sys/vm memguard.c memguard.h vm_extern.h vm_kern.c Log: SVN rev 212427 on 2010-09-10 17:26:41Z by mdf MFC r211194, r211229, r212058, r212063: memguard(9) rewrite r211194: Rework memguard(9) to reserve significantly more KVA to detect use-after-free over a longer time. Also release the backing pages of a guarded allocation at free(9) time to reduce the overhead of using memguard(9). Allow setting and varying the malloc type at run-time. Add knobs to allow: - randomly guarding memory - adding un-backed KVA guard pages to detect underflow and overflow - a lower limit on the size of allocations that are guarded r211229: Fix compile. It seemed better to have memguard.c include opt_vm.h in case future compile-time knobs were added that it wants to use. Also add include guards and forward declarations to vm/memguard.h. r212058: The realloc case for memguard(9) will copy too many bytes when reallocating to a smaller-sized allocation. Fix this issue. r212063: Have memguard(9) crash with an easier-to-debug message on double-free. Revision Changes Path 1.5.10.2 +87 -31 src/share/man/man9/memguard.9 1.172.2.2 +17 -21 src/sys/kern/kern_malloc.c 1.7.2.2 +327 -264 src/sys/vm/memguard.c 1.3.10.2 +26 -5 src/sys/vm/memguard.h 1.86.2.5 +1 -0 src/sys/vm/vm_extern.h 1.141.2.2 +27 -8 src/sys/vm/vm_kern.c