When tabbing in lftp to fill in the rest of the pathnames, it sometimes segmentation faults. Not of any help, but it looks like this: lftp user@ftpserver:/> cd download/FreeBSD/freebsd-5.3-amd64/Segmentation fault Reproducible: Sometimes Steps to Reproduce: 1. Using tab in lftp while moving between directories 2. 3. Actual Results: It crashed due to segmentation fault. System uname: 2.6.11.7 i686 Pentium III (Coppermine) Gentoo Base System version 1.6.12 Python: dev-lang/python-2.3.5 [2.3.5 (#1, Jun 9 2005, 23:11:28)] dev-lang/python: 2.3.5 sys-apps/sandbox: [Not Present] sys-devel/autoconf: 2.59-r6, 2.13 sys-devel/automake: 1.7.9-r1, 1.8.5-r3, 1.5, 1.4_p6, 1.6.3, 1.9.5 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.16 virtual/os-headers: 2.6.8.1-r2 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-march=pentium3 -O2 -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share /config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/shar e/config /var/qmail/alias /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=pentium3 -O2 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms strict" GENTOO_MIRRORS="ftp://mirror.pudas.net/gentoo http://trumpetti.atm.tut.fi/gentoo http://gentoo.inode.at/ ftp://ftp.linux.ee/pub/gentoo/distfiles/ ftp://gentoo.inode.at/source/" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="x86 X apache2 arts avi berkdb bitmap-fonts cdr crypt cups curl emboss encode esd fam flac foomaticdb fortran gd gdbm gif gpm gtk gtk2 imagemagick imap imlib java jpeg kde libg++ libwww mad maildir mikmod motif mozilla mp3 mpeg mysql ncurses nls nptl nptlonly ogg oggvorbis opengl oss pam pdflib perl png python qt quicktime readline samba sdl slang spell ssl svga tcltk tcpd tiff truetype truetype-fonts type1-fonts vorbis xml2 xmms xv zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CBUILD, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
Can this be related to the upgrade of readline to readline-5.0-r2?
Here is what I got from the core dump: peter@server1 ~ $ gdb /usr/bin/lftp core GNU gdb 6.0 Copyright 2003 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-linux-gnu"... (no debugging symbols found)...Using host libthread_db library "/lib/libthread_d b.so.1". Core was generated by `lftp'. Program terminated with signal 11, Segmentation fault. warning: current_sos: Can't read pathname for load map: Input/output error Reading symbols from /lib/libreadline.so.5...(no debugging symbols found)... done. Loaded symbols for /lib/libreadline.so.5 Reading symbols from /usr/lib/libssl.so.0.9.7...(no debugging symbols found)... done. Loaded symbols for /usr/lib/libssl.so.0.9.7 Reading symbols from /usr/lib/libcrypto.so.0.9.7... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libcrypto.so.0.9.7 Reading symbols from /usr/lib/libexpat.so.0...(no debugging symbols found)... done. Loaded symbols for /usr/lib/libexpat.so.0 Reading symbols from /lib/libutil.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libutil.so.1 Reading symbols from /lib/libncurses.so.5...(no debugging symbols found)... done. Loaded symbols for /lib/libncurses.so.5 Reading symbols from /lib/libresolv.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libresolv.so.2 Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libdl.so.2 ---Type <return> to continue, or q <return> to quit--- Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libm.so.6 Reading symbols from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s. so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so .1 Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/libgpm.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libgpm.so.1 Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /usr/lib/gconv/ISO8859-1.so... (no debugging symbols found)...done. Loaded symbols for /usr/lib/gconv/ISO8859-1.so #0 0xb7fc4f9e in rl_redisplay () from /lib/libreadline.so.5 (gdb) bt #0 0xb7fc4f9e in rl_redisplay () from /lib/libreadline.so.5 (gdb)
I was going to to a version bump and see if that fixed it. 3.1.4 and 3.2.1 are available. Just getting odd QA errors that I don't know whats causing it: DEPEND.badindev 5 net-ftp/lftp/lftp-3.1.4.ebuild: ~ppc-macos(default-darwin/macos/10.3) ['sys-apps/shadow'] net-ftp/lftp/lftp-3.0.13.ebuild: ~ppc-macos(default-darwin/macos/10.3) ['sys-apps/shadow'] You could be right with readline though
3.1.4 and 3.2.1 added. hopely fixed in one of those versions. please confirm.
I have now tested both lftp-3.1.4 and lftp-3.2.1. Both crashed in exactly the same way as 3.1.3.
I cannot reproduce this. I remember this was a problem in an older version. Can you give me steps on a public ftp server and let me know which version of readline you are using?
How to reproduce: Log in anonymous to ftp.sunet.se. Type the following key sequence when using the cd command: "p TAB L TAB k TAB . TAB s TAB" Hopefully you will get a segfault: > lftp lftp :~> open ftp.sunet.se lftp ftp.sunet.se:~> cd pub/Linux/kernel.org/sSegmentation fault > lftp -version LFTP | Version 3.2.1 | Copyright (c) 1996-2005 Alexander V. Lukyanov LFTP is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for LFTP. See COPYING for details. Send bug reports and questions to <lftp@uniyar.ac.ru>. Libraries used: Readline 5.0, Expat 1.95.8, OpenSSL 0.9.7e 25 Oct 2004 I'm having readline-5.0-r2 installed.
I cannot reproduce this. > lftp @:~-> open ftp.sunet.se @ftp.sunet.se:~-> cd pub/Linux/kernel.org/software/ admin/ benchmark/ devel/ editors/ graphics/ libs/ network/ scm/ utils/ web/ @ftp.sunet.se:~-> cd pub/Linux/kernel.org/software/ LFTP | Version 3.2.1 | Copyright (c) 1996-2005 Alexander V. Lukyanov LFTP is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for LFTP. See COPYING for details. Send bug reports and questions to <lftp@uniyar.ac.ru>. Libraries used: Readline 5.0, Expat 1.95.8, OpenSSL 0.9.7e 25 Oct 2004
Maybe I forgot one TAB in the sequence. Try this: "p TAB L TAB k TAB . TAB s TAB TAB"
Hitting tab again is what I did and pasted you above (it prints out all valid directories as expected).
I'm a complete n00b regarding debugging with gdb, but I recompiled readline-5.0-r2 with -g and used FEATURES=nostrip and managed to extract this information: ... Loaded symbols for /lib/libutil.so.1 Reading symbols from /lib/libncurses.so.5...done. Loaded symbols for /lib/libncurses.so.5 Reading symbols from /lib/libresolv.so.2...done. Loaded symbols for /lib/libresolv.so.2 Reading symbols from /lib/libdl.so.2...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/libm.so.6...done. Loaded symbols for /lib/libm.so.6 Reading symbols from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1...done. Loaded symbols for /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 Reading symbols from /lib/libc.so.6...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/libgpm.so.1...done. Loaded symbols for /lib/libgpm.so.1 ---Type <return> to continue, or q <return> to quit--- Reading symbols from /lib/ld-linux.so.2...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /usr/lib/gconv/ISO8859-1.so...done. Loaded symbols for /usr/lib/gconv/ISO8859-1.so #0 0xb7fc1f94 in rl_redisplay () at ../display.c:622 warning: Source file is more recent than executable. 622 inv_lbreaks[++newlines] = temp; (gdb) frame 0 #0 0xb7fc1f94 in rl_redisplay () at ../display.c:622 622 inv_lbreaks[++newlines] = temp; (gdb) info locals in = 134827929 out = 82 c = -1073746028 linenum = 128 cursor_linenum = 128 line = 0x81815a0 "" c_pos = -1 inv_botlin = 0 lb_botlin = -1208134664 lb_linenum = -1073745624 newlines = 179064 lpos = 82 temp = 0 modmark = 0 n0 = 0 num = 0 prompt_this_line = 0xb7fd8f00 "pub/Linux/kernel.org: Getting directory contents (0) [Making data connection...]> " wc = 135153428 wc_bytes = 128 wc_width = 135432776 ps = {__count = 135153428, __value = {__wch = 134863090, __wchb = "
I'm a complete n00b regarding debugging with gdb, but I recompiled readline-5.0-r2 with -g and used FEATURES=nostrip and managed to extract this information: ... Loaded symbols for /lib/libutil.so.1 Reading symbols from /lib/libncurses.so.5...done. Loaded symbols for /lib/libncurses.so.5 Reading symbols from /lib/libresolv.so.2...done. Loaded symbols for /lib/libresolv.so.2 Reading symbols from /lib/libdl.so.2...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/libm.so.6...done. Loaded symbols for /lib/libm.so.6 Reading symbols from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1...done. Loaded symbols for /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 Reading symbols from /lib/libc.so.6...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/libgpm.so.1...done. Loaded symbols for /lib/libgpm.so.1 ---Type <return> to continue, or q <return> to quit--- Reading symbols from /lib/ld-linux.so.2...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /usr/lib/gconv/ISO8859-1.so...done. Loaded symbols for /usr/lib/gconv/ISO8859-1.so #0 0xb7fc1f94 in rl_redisplay () at ../display.c:622 warning: Source file is more recent than executable. 622 inv_lbreaks[++newlines] = temp; (gdb) frame 0 #0 0xb7fc1f94 in rl_redisplay () at ../display.c:622 622 inv_lbreaks[++newlines] = temp; (gdb) info locals in = 134827929 out = 82 c = -1073746028 linenum = 128 cursor_linenum = 128 line = 0x81815a0 "" c_pos = -1 inv_botlin = 0 lb_botlin = -1208134664 lb_linenum = -1073745624 newlines = 179064 lpos = 82 temp = 0 modmark = 0 n0 = 0 num = 0 prompt_this_line = 0xb7fd8f00 "pub/Linux/kernel.org: Getting directory contents (0) [Making data connection...]> " wc = 135153428 wc_bytes = 128 wc_width = 135432776 ps = {__count = 135153428, __value = {__wch = 134863090, __wchb = "òØ\t\b"}} _rl_wrapped_multicolumn = 0 (gdb) Quit If I downgrade readline to readline-4.3-r5 the problem disappear for me.
It also segfaults on my amd64 system when I use readline-5.0-r2. It depends on the terminal width if lftp segfaults while tabbing or not, smaller column => crashes with shorter directory paths.
Hi, I'm also affected by this crash. I encountered this with lftp-3.2.1 on a ~x86 box Poly
Any news on this problem?
(In reply to comment #14) > Any news on this problem? lftp-3.3.0 also segfaults, on x86.
(In reply to comment #15) > lftp-3.3.0 also segfaults, on x86. Same on hppa, with sys-libs/readline-5.0-r2 on both systems.
pushed upstream: These lists are archived at http://www.mail-archive.com/lftp%40uniyar.ac.ru/ http://www.mail-archive.com/lftp-devel%40uniyar.ac.ru/ I didn't do a full look of the archives so If someone finds a good solution there please tell me.
user@host ~ $ lftp ftp://ftp.kernel.org/ ... lftp ftp.kernel.org:/> cd pub/linux/kernel/people/ch[R][TAB] chris/ christoph/ chrisw/ chuyee/ lftp ftp.kernel.org:/> cd pub/linux/kernel/people/chris[/][TAB] chris/ christoph/ chrisw/ ---> CWD /pub/linux/kernel/people/chris <--- 250 Directory successfully changed. ---> PASV <--- 227 Entering Passive Mode (204,152,191,5,214,235) ---- Connecting data socket to (204.152.191.5) port 55019 ---- Data connection established ---> LIST <--- 150 Here comes the directory listing. <--- 226 Directory send OK. ---- Got EOF on data connection ---- Closing data socket ---> CWD /pub/linux/kernel/people/chris/hdlc <--- 250 Directory successfully changed. ---> PASV <--- 227 Entering Passive Mode (204,152,191,5,182,32) ---- Connecting data socket to (204.152.191.5) port 46624 ---- Data connection established ---> LIST <--- 150 Here comes the directory listing. <--- 226 Directory send OK. Segmentation fault user@host ~ $
Er, sorry. I ought to explain, I had set debug 9 on the lftp command line too, hence all the extra output. Apparently the problem occurs perhaps not while or because of tabbing, but during lftp's look through some directories.
Jer: I cannot reproduce your problem. No seg faults... and tab completing works just perfectly. lftp -version: LFTP | Version 3.3.0 | Copyright (c) 1996-2005 Alexander V. Lukyanov LFTP is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for LFTP. See COPYING for details. Send bug reports and questions to <lftp@uniyar.ac.ru>. Libraries used: Readline 5.0, Expat 1.95.8, OpenSSL 0.9.7e 25 Oct 2004
Jeffrey Litvin: I really don't see why you would want to mention three times that you cannot reproduce the problem. How is that helpful without either asking for or offering more specific information? And don't tell me you tried to replicate my exact keystrokes; that's not what this is about. Sometimes I need 20 or 30 tabs to "reproduce" the segfault, sometimes the first one does it. In that respect the problem is random, but that try with 'debug 9' might have shown that the problem does not occur at the readline level at all, but much deeper in the code that retrieves directory listings /during/ one of these tabbing exercises... ------------------------------------ henke ~ # lftp --version LFTP | Version 3.3.0 | Copyright (c) 1996-2005 Alexander V. Lukyanov LFTP is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for LFTP. See COPYING for details. Send bug reports and questions to <lftp@uniyar.ac.ru>. Libraries used: Readline 5.0, Expat 1.95.8, GnuTLS 1.2.3 ------------------------------------
Jer: Well if it was reproducable, that would tell us something and we could figure out your problem. Since its not, its helpful in that it tells us nothing and we are back to square one and still dont even know if this is a direct lftp releated problem at all.
Hi, after reading your small dispute here I tried to reproduce the segfault and was able to reproduce it with the very first try. I logged into ftp://ftp.kernel.org and "tabbed" into /pub/linux/kernel/ when lftp-3.3.0 was segfaulting. I also have sys-libs/readline-5.0-r2 installed currently. I have no clue why you can't reproduce it Jeffrey but believe me, I would rather prefer to have your situation of not being able to reproduce the segfault :-/ Greetz Poly
(In reply to comment #22) > Jer: > > Well if it was reproducable, that would tell us something and we could figure > out your problem. Since its not, its helpful in that it tells us nothing and we > are back to square one and still dont even know if this is a direct lftp > releated problem at all. The bug *is* reproducable, but occurs randomly, so there's no fixed recipe. Maybe you're just not trying hard enough?
Hi, it's still reproduceable with lftp-3.3.3 (not in portage currently but I created my own ebuild from 3.3.0-ebuild). I hope someone will find a fix for this as it's veeery annoying. Greetz Poly
I've this bug to the author's mailist and got no response. I suggest you report it there as well.
Default build lftp-3.0.13 +nls -socks5 +ssl crashes for me as described. Crash happens when the line (host+path+'Getting directory entries (or some such)') gets longer than $COLUMNS. That is spill on the next line appears to trigger the crash. I would propose using ./configure --with-included-readline, which does not crash for me.
Hi, --with-included-readline seems to work for me. I couldn't reproduce the crashes after compiling lftp with this option. Devs please consider to include this option into the next ebuild of lftp. Greetz Poly
*** This bug has been marked as a duplicate of 74815 ***
