Bug#691487: bsdmainutils: Segfault, easy to reproduce
> Well, whose fault would it be? My default is 1M stack size, and all > other > programs seem to be fine with that... Sorry, my message was confusing. This bug report was about a different problem, the stack size one is still open. Besides, while I do agree that memory handling should be changed, which would be a feature request IMO, the segfault itself does not come from a bug in column. Anyway, nitpicking, the code needs improvements. :) Michael -- Michael Meskes Michael at Fam-Meskes dot De, Michael at Meskes dot (De|Com|Net|Org) Meskes at (Debian|Postgresql) dot Org Jabber: michael at xmpp dot meskes dot org VfL Borussia! Força Barça! SF 49ers! Use Debian GNU/Linux, PostgreSQL
Bug#691487: bsdmainutils: Segfault, easy to reproduce
> > Well, it only got easier - just start it: > > > > $ column > > Speicherzugriffsfehler > > ... > > Let me guess, you've set ulimits on the process? column needs quite a bit of > heap space for statically allocated buffers. Yes, it'd be nice if it was > patched to use malloc, but the segfault is not really columns fault in this > case. Yeah, right! Thanks for the tip... somewhere between "ulimit -s4100" and "ulimit -s4200" there's the limit for being able to start column. Well, whose fault would it be? My default is 1M stack size, and all other programs seem to be fine with that... Thank you very much, and sorry for the noise.
Bug#691487: bsdmainutils: Segfault, easy to reproduce
On Thu, Mar 10, 2016 at 07:39:04AM +0100, Philipp Marek wrote: > Well, it only got easier - just start it: > > $ column > Speicherzugriffsfehler > ... Let me guess, you've set ulimits on the process? column needs quite a bit of heap space for statically allocated buffers. Yes, it'd be nice if it was patched to use malloc, but the segfault is not really columns fault in this case. Michael -- Michael Meskes Michael at Fam-Meskes dot De, Michael at Meskes dot (De|Com|Net|Org) Meskes at (Debian|Postgresql) dot Org Jabber: michael at xmpp dot meskes dot org VfL Borussia! Força Barça! Go SF 49ers! Use Debian GNU/Linux, PostgreSQL
Bug#691487: bsdmainutils: Segfault, easy to reproduce
Hi Michael, > > When trying to use "column" I found an easy way to reproduce a segfault; > > I guess it's the same here, as both data files start with whitespace. > > > > $ echo 'aa' | column > > Segmentation fault > > > > Ie. sending a character as first character seems to cause the crash. > > Not sure if this is the same problem or not, but again I cannot reproduce. Do > you still see it? Any idea what might be different? I'm on up-to-date sid. Can > you debug? Well, it only got easier - just start it: $ column Speicherzugriffsfehler $ gdb --args column GNU gdb (Debian 7.10-1+b1) 7.10 ... Starting program: /usr/bin/column Program received signal SIGSEGV, Segmentation fault. 0x00401919 in ?? () (gdb) bt #0 0x00401919 in ?? () #1 0x00400f67 in ?? () #2 0x77a57870 in __libc_start_main (main=0x400d50, argc=0x1, argv=0x7fffdfa8, init=, fini=, rtld_fini=, stack_end=0x7fffdf98) at libc-start.c:291 #3 0x00401001 in ?? () $ which column /usr/bin/column $ ls -la /usr/bin/column -rwxr-xr-x 1 root root 14616 Nov 27 11:16 /usr/bin/column $ sha1sum /usr/bin/column 9d420d6114b0a1e55ca0c8ba3e694200d802a6fd /usr/bin/column $ md5sum /usr/bin/column e06e22651bc021be0effbccb494e8f5c /usr/bin/column $ dpkg-query -l bsdmainutils ... ii bsdmainutils 9.0.6+b1amd64 collection of more utilities from FreeBSD $ dpkg --verify bsdmainutils ; echo $? 0
Bug#691487: bsdmainutils: Segfault, easy to reproduce
On Thu, Jan 15, 2015 at 04:36:46PM +0100, Ph. Marek wrote: > When trying to use "column" I found an easy way to reproduce a segfault; > I guess it's the same here, as both data files start with whitespace. > > $ echo 'aa' | column > Segmentation fault > > Ie. sending a character as first character seems to cause the crash. Not sure if this is the same problem or not, but again I cannot reproduce. Do you still see it? Any idea what might be different? I'm on up-to-date sid. Can you debug? Michael -- Michael Meskes Michael at Fam-Meskes dot De, Michael at Meskes dot (De|Com|Net|Org) Meskes at (Debian|Postgresql) dot Org Jabber: michael at xmpp dot meskes dot org VfL Borussia! Força Barça! Go SF 49ers! Use Debian GNU/Linux, PostgreSQL
Bug#691487: bsdmainutils: Segfault, easy to reproduce
Package: bsdmainutils Version: 9.0.6 Followup-For: Bug #691487 When trying to use "column" I found an easy way to reproduce a segfault; I guess it's the same here, as both data files start with whitespace. $ echo 'aa' | column Segmentation fault Ie. sending a character as first character seems to cause the crash. -- System Information: Debian Release: 8.0 APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 3.17-1-amd64 (SMP w/4 CPU cores) Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages bsdmainutils depends on: ii bsdutils 1:2.25.2-4 ii debianutils 4.4+b1 ii libc62.19-13 ii libncurses5 5.9+20140913-1+b1 ii libtinfo55.9+20140913-1+b1 bsdmainutils recommends no packages. Versions of packages bsdmainutils suggests: ii cpp 4:4.9.2-1 pn vacation ii wamerican [wordlist] 7.1-1 ii whois 5.2.3 ii wngerman [wordlist] 20131206-5 -- no debconf information -- : Ing. Philipp Marek : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com : DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
