Date: Sat, 17 Jan 2004 13:25:21 -0800 (PST) From: Stephan Uphoff <ups@stups.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/61497: __elfN(map_insert) bug [patch] Message-ID: <200401172125.i0HLPLnS092437@www.freebsd.org> Resent-Message-ID: <200401172130.i0HLUGQp034703@freefall.freebsd.org>
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>Number: 61497 >Category: kern >Synopsis: __elfN(map_insert) bug [patch] >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Jan 17 13:30:15 PST 2004 >Closed-Date: >Last-Modified: >Originator: Stephan Uphoff >Release: current - Jan 17 2004 >Organization: >Environment: N/A >Description: When the mapping for complete pages is not aligned __elfN(map_insert) copies the data from temporary mapped file backed pages to the userspace mapping. The copying is done in a loop with at most one page being copied at a time. Unfortunately the file offset is not updated and the same offset in the file is mapped and copied on each iteration. >How-To-Repeat: >Fix: Index: imgact_elf.c =================================================================== RCS file: /cvsroot/src/sys/kern/imgact_elf.c,v retrieving revision 1.143 diff -c -r1.143 imgact_elf.c *** imgact_elf.c 23 Dec 2003 02:45:24 -0000 1.143 --- imgact_elf.c 17 Jan 2004 20:59:55 -0000 *************** *** 333,338 **** --- 333,339 ---- return (KERN_FAILURE); } start += sz; + offset += sz; } rv = KERN_SUCCESS; } else { >Release-Note: >Audit-Trail: >Unformatted:
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