From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29420 invoked by alias); 13 Sep 2013 11:34:24 -0000 Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Workers List List-Post: List-Help: X-Seq: 31719 Received: (qmail 10704 invoked from network); 13 Sep 2013 11:34:19 -0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.2 Received-SPF: none (ns1.primenet.com.au: domain at sym2.noone.org does not designate permitted sender hosts) Date: Fri, 13 Sep 2013 13:34:12 +0200 From: Axel Beckert To: zsh-workers@zsh.org Subject: Re: Segfault on "task " with zsh 5.0.2 Message-ID: <20130913113412.GZ19439@sym.noone.org> Mail-Followup-To: zsh-workers@zsh.org References: <20130912221812.GY19439@sym.noone.org> <20130913093732.25326b25@pwslap01u.europe.root.pri> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130913093732.25326b25@pwslap01u.europe.root.pri> X-Operating-System: Linux 2.6.32-5-xen-amd64 X-Machine: sym2 x86_64 X-Editor: GNU Emacs 23.2.1 Face: 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 Organization: DeuxChevaux.org -- The =?iso-8859-1?Q?Citr?= =?iso-8859-1?B?b+tu?= 2CV Database User-Agent: Mutt/1.5.20 (2009-06-14) Hi Peter, On Fri, Sep 13, 2013 at 09:37:32AM +0100, Peter Stephenson wrote: > On Fri, 13 Sep 2013 00:18:13 +0200 > Axel Beckert wrote: > > I managed to get my zsh 5.0.2 to segfault on entering "task " and then > > pressing the tabulator key twice. > > First few lines of the backtrace: > > > > Program received signal SIGSEGV, Segmentation fault. > > freecvdef (d=0x100000001) at ../../../Src/Zle/computil.c:2799 > > 2799 ../../../Src/Zle/computil.c: No such file or directory. > > #0 freecvdef (d=0x100000001) at ../../../Src/Zle/computil.c:2799 > > #1 0x00007ffff599f8a4 in get_cvdef (args=, nam=) at ../../../Src/Zle/computil.c:2998 > > #2 bin_compvalues (nam=, args=, ops=, func=) at ../../../Src/Zle/computil.c:3347 > > Looks like a memory error. Does valgrind give any extra hints? Not sure if used valgrind properly, but it looks as if it found something: % valgrind zsh -f ==6722== Memcheck, a memory error detector ==6722== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. ==6722== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==6722== Command: zsh -f ==6722== ==6722== Syscall param capget(data) points to unaddressable byte(s) ==6722== at 0x584AD77: capget (syscall-template.S:81) ==6722== by 0x4E34902: cap_init (in /lib/x86_64-linux-gnu/libcap.so.2.22) ==6722== by 0x4E34995: cap_get_proc (in /lib/x86_64-linux-gnu/libcap.so.2.22) ==6722== by 0x488184: privasserted (in /bin/zsh5) ==6722== by 0x46FF92: putpromptchar (in /bin/zsh5) ==6722== by 0x471178: promptexpand (in /bin/zsh5) ==6722== by 0x488A21: preprompt (in /bin/zsh5) ==6722== by 0x43CC97: loop (in /bin/zsh5) ==6722== by 0x43FD65: zsh_main (in /bin/zsh5) ==6722== by 0x5783994: (below main) (libc-start.c:260) ==6722== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==6722== kiva6% autoload -Uz compinit kiva6% compinit ==6726== ==6726== HEAP SUMMARY: ==6726== in use at exit: 630,408 bytes in 18,315 blocks ==6726== total heap usage: 24,460 allocs, 6,145 frees, 5,131,211 bytes allocated ==6726== ==6726== LEAK SUMMARY: ==6726== definitely lost: 0 bytes in 0 blocks ==6726== indirectly lost: 0 bytes in 0 blocks ==6726== possibly lost: 0 bytes in 0 blocks ==6726== still reachable: 630,408 bytes in 18,315 blocks ==6726== suppressed: 0 bytes in 0 blocks ==6726== Rerun with --leak-check=full to see details of leaked memory ==6726== ==6726== For counts of detected and suppressed errors, rerun with: -v ==6726== ERROR SUMMARY: 5 errors from 1 contexts (suppressed: 2 from 2) kiva6% task ==6722== Invalid read of size 8 ==6722== at 0x7FF2E8C: freecvdef (in /usr/lib/x86_64-linux-gnu/zsh/5.0.2/zsh/computil.so) ==6722== by 0x7FF68A3: bin_compvalues (in /usr/lib/x86_64-linux-gnu/zsh/5.0.2/zsh/computil.so) ==6722== by 0x41C8D5: execbuiltin (in /bin/zsh5) ==6722== by 0x42A78F: execcmd (in /bin/zsh5) ==6722== by 0x42ACEC: execpline2 (in /bin/zsh5) ==6722== by 0x42B213: execpline (in /bin/zsh5) ==6722== by 0x42C5A1: execlist (in /bin/zsh5) ==6722== by 0x44C1BF: execif (in /bin/zsh5) ==6722== by 0x429CAE: execcmd (in /bin/zsh5) ==6722== by 0x42ACEC: execpline2 (in /bin/zsh5) ==6722== by 0x42B213: execpline (in /bin/zsh5) ==6722== by 0x42C5A1: execlist (in /bin/zsh5) ==6722== Address 0x100000001 is not stack'd, malloc'd or (recently) free'd ==6722== ==6722== ==6722== Process terminating with default action of signal 11 (SIGSEGV) ==6722== Access not within mapped region at address 0x100000001 ==6722== at 0x7FF2E8C: freecvdef (in /usr/lib/x86_64-linux-gnu/zsh/5.0.2/zsh/computil.so) ==6722== by 0x7FF68A3: bin_compvalues (in /usr/lib/x86_64-linux-gnu/zsh/5.0.2/zsh/computil.so) ==6722== by 0x41C8D5: execbuiltin (in /bin/zsh5) ==6722== by 0x42A78F: execcmd (in /bin/zsh5) ==6722== by 0x42ACEC: execpline2 (in /bin/zsh5) ==6722== by 0x42B213: execpline (in /bin/zsh5) ==6722== by 0x42C5A1: execlist (in /bin/zsh5) ==6722== by 0x44C1BF: execif (in /bin/zsh5) ==6722== by 0x429CAE: execcmd (in /bin/zsh5) ==6722== by 0x42ACEC: execpline2 (in /bin/zsh5) ==6722== by 0x42B213: execpline (in /bin/zsh5) ==6722== by 0x42C5A1: execlist (in /bin/zsh5) ==6722== If you believe this happened as a result of a stack ==6722== overflow in your program's main thread (unlikely but ==6722== possible), you can try to increase the size of the ==6722== main thread stack using the --main-stacksize= flag. ==6722== The main thread stack size used in this run was 8388608. ==6722== ==6722== HEAP SUMMARY: ==6722== in use at exit: 893,406 bytes in 22,714 blocks ==6722== total heap usage: 233,166 allocs, 210,452 frees, 17,418,357 bytes allocated ==6722== ==6722== LEAK SUMMARY: ==6722== definitely lost: 0 bytes in 0 blocks ==6722== indirectly lost: 0 bytes in 0 blocks ==6722== possibly lost: 0 bytes in 0 blocks ==6722== still reachable: 893,406 bytes in 22,714 blocks ==6722== suppressed: 0 bytes in 0 blocks ==6722== Rerun with --leak-check=full to see details of leaked memory ==6722== ==6722== For counts of detected and suppressed errors, rerun with: -v ==6722== ERROR SUMMARY: 8 errors from 2 contexts (suppressed: 2 from 2) [1] 6722 segmentation fault (core dumped) valgrind zsh -f valgrind zsh -f 14.68s user 1.45s system 26% cpu 1:01.61 total HTH. Kind regards, Axel -- /~\ Plain Text Ribbon Campaign | Axel Beckert \ / Say No to HTML in E-Mail and News | abe@deuxchevaux.org (Mail) X See http://www.asciiribbon.org/ | abe@noone.org (Mail+Jabber) / \ I love long mails: http://email.is-not-s.ms/ | http://noone.org/abe/ (Web)