Date: Wed, 10 Feb 1999 09:37:14 -0800 (PST) From: deraison@cybercable.fr To: freebsd-gnats-submit@FreeBSD.ORG Subject: misc/10009: dlopen will crash when opening some stripped shared libs Message-ID: <199902101737.JAA24892@hub.freebsd.org>
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>Number: 10009 >Category: misc >Synopsis: dlopen will crash when opening some stripped shared libs >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Feb 10 09:40:00 PST 1999 >Closed-Date: >Last-Modified: >Originator: Renaud Deraison >Release: 3.0-RELEASE >Organization: >Environment: FreeBSD prof.nain.org 3.0-RELEASE FreeBSD 3.0-RELEASE #0: Sat Oct 17 17:45:06 GMT 1998 jkh@kickme.freebsd.org:/usr/src/sys/compile/GENERIC i386 >Description: The dlopen() function will crash when opening stripped shared libraries which are linked against some other shared librairies. Linking shared libs against shared libs is a useful way to make modules for an application. gdb output : #0 0x400048d0 in reloc_plt () (gdb) bt #0 0x400048d0 in reloc_plt () #1 0x4000306b in find_symdef () #2 0x4000339d in dlopen () And the program dies with a signal 10 received. >How-To-Repeat: This is non-trivial. The easiest way is to download nessus-990201 (see http://www.nessus.org/download/unix.html for the locations) to compile it, to install it, and to run the nessus daemon (nessusd) which will happily crash when loading _some_ of those shared libs (this is apparently random). >Fix: Do not use stripped out shared libraries with dlopen(). >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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