usb crashed with SIGSEGV in opendir() -- USB ports are in BIOS disabled --> cupsd crashes every time

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Tue Jan 29 10:24:52 2013
DistroRelease: Ubuntu 12.04
ExecutablePath: /usr/lib/cups/backend/usb
ExecutableTimestamp: 1355350942
ProcAttrCurrent: /usr/sbin/cupsd (enforce)
ProcCmdline: usb
ProcCwd: /
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF8
ProcMaps:
 00110000-00127000 r-xp 00000000 08:01 1401074 /lib/i386-linux-gnu/libpthread-2.15.so
 00127000-00128000 r--p 00016000 08:01 1401074 /lib/i386-linux-gnu/libpthread-2.15.so
 00128000-00129000 rw-p 00017000 08:01 1401074 /lib/i386-linux-gnu/libpthread-2.15.so
 00129000-0012b000 rw-p 00000000 00:00 0
 0012b000-00132000 r-xp 00000000 08:01 1401070 /lib/i386-linux-gnu/librt-2.15.so
 00132000-00133000 r--p 00006000 08:01 1401070 /lib/i386-linux-gnu/librt-2.15.so
 00133000-00134000 rw-p 00007000 08:01 1401070 /lib/i386-linux-gnu/librt-2.15.so
 00134000-001f3000 r-xp 00000000 08:01 590073 /usr/lib/i386-linux-gnu/libgnutls.so.26.21.8
 001f3000-001f7000 r--p 000be000 08:01 590073 /usr/lib/i386-linux-gnu/libgnutls.so.26.21.8
 001f7000-001f8000 rw-p 000c2000 08:01 590073 /usr/lib/i386-linux-gnu/libgnutls.so.26.21.8
 001f8000-00222000 r-xp 00000000 08:01 1401078 /lib/i386-linux-gnu/libm-2.15.so
 00222000-00223000 r--p 00029000 08:01 1401078 /lib/i386-linux-gnu/libm-2.15.so
 00223000-00224000 rw-p 0002a000 08:01 1401078 /lib/i386-linux-gnu/libm-2.15.so
 00224000-002ec000 r-xp 00000000 08:01 590177 /usr/lib/i386-linux-gnu/libkrb5.so.3.3
 002ec000-002f2000 r--p 000c7000 08:01 590177 /usr/lib/i386-linux-gnu/libkrb5.so.3.3
 002f2000-002f3000 rw-p 000cd000 08:01 590177 /usr/lib/i386-linux-gnu/libkrb5.so.3.3
 002f3000-00303000 r-xp 00000000 08:01 590355 /usr/lib/i386-linux-gnu/libtasn1.so.3.1.12
 00303000-00304000 r--p 0000f000 08:01 590355 /usr/lib/i386-linux-gnu/libtasn1.so.3.1.12
 00304000-00305000 rw-p 00010000 08:01 590355 /usr/lib/i386-linux-gnu/libtasn1.so.3.1.12
 00305000-00315000 r-xp 00000000 08:01 590242 /usr/lib/i386-linux-gnu/libp11-kit.so.0.0.0
 00315000-00316000 r--p 0000f000 08:01 590242 /usr/lib/i386-linux-gnu/libp11-kit.so.0.0.0
 00316000-00317000 rw-p 00010000 08:01 590242 /usr/lib/i386-linux-gnu/libp11-kit.so.0.0.0
 00317000-0035e000 r-xp 00000000 08:01 1400858 /lib/i386-linux-gnu/libdbus-1.so.3.5.8
 0035e000-0035f000 r--p 00047000 08:01 1400858 /lib/i386-linux-gnu/libdbus-1.so.3.5.8
 0035f000-00360000 rw-p 00048000 08:01 1400858 /lib/i386-linux-gnu/libdbus-1.so.3.5.8
 00360000-00363000 r-xp 00000000 08:01 1401086 /lib/i386-linux-gnu/libdl-2.15.so
 00363000-00364000 r--p 00002000 08:01 1401086 /lib/i386-linux-gnu/libdl-2.15.so
 00364000-00365000 rw-p 00003000 08:01 1401086 /lib/i386-linux-gnu/libdl-2.15.so
 00365000-00378000 r-xp 00000000 08:01 1401066 /lib/i386-linux-gnu/libresolv-2.15.so
 00378000-00379000 ---p 00013000 08:01 1401066 /lib/i386-linux-gnu/libresolv-2.15.so
 00379000-0037a000 r--p 00013000 08:01 1401066 /lib/i386-linux-gnu/libresolv-2.15.so
 0037a000-0037b000 rw-p 00014000 08:01 1401066 /lib/i386-linux-gnu/libresolv-2.15.so
 0037b000-0037d000 rw-p 00000000 00:00 0
 0040b000-0040d000 r-xp 00000000 08:01 140...

What is the output of

lsusb

on your machine? Do you get any output? Does it crash? Please post the output here.

Can you reproduce the crash? Probably most easily you can reproduce it running

sudo /usr/lib/cups/backend/usb

If a crash report pops up, follow the steps until a new bug report gets generated. Please post a link to the new bug here.

~$ sudo lsusb
unable to initialize libusb: -99

BUT:
~$ sudo dpkg -l | grep 'libusb'
ii libusb-0.1-4 2:0.1.12-20 userspace USB programming library
ii libusb-1.0-0 2:1.0.9~rc3-2ubuntu1 userspace USB programming library
ii libusbmuxd1 1.0.7-2ubuntu0.1 USB multiplexor daemon for iPhone and iPod Touch devices - library

~$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices

--> programm crashes --> apport pops up --> show details -->
--> Ungültiger Problembericht - Konnte Paket oder Quellpaket-Namen nicht bestimmen.
--> apport closes!

I attached the crash report (_usr_lib_cups_backend_usb.0.crash).

Sorry, forgot the translation for the (german) error window:

Invalid problem report - Could package or source package names not determine/identify.

Can you install the cups-dbg package and then run

ulimit -c unlimited
sudo /usr/lib/cups/backend/usb

"usb" will crash and produce a core file.

Run

sudo gdb -c core /usr/lib/cups/backend/usb

and at the prompt of gdb run

bt

and after that

quit

Please post all the screen output here.

Thanks for your fast response!

Here the ouput:

~$ sudo apt-get install cups-dbg
[sudo] password for icafe:
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut
Statusinformationen werden eingelesen... Fertig
Die folgenden NEUEN Pakete werden installiert:
  cups-dbg
0 aktualisiert, 1 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Es müssen 1.536 kB an Archiven heruntergeladen werden.
Nach dieser Operation werden 2.219 kB Plattenplatz zusätzlich benutzt.
Hole:1 http://de.archive.ubuntu.com/ubuntu/ precise-updates/main cups-dbg i386 1.5.3-0ubuntu6 [1.536 kB]
Es wurden 1.536 kB in 2 s geholt (670 kB/s)
Vormals nicht ausgewähltes Paket cups-dbg wird gewählt.
(Lese Datenbank ... 152329 Dateien und Verzeichnisse sind derzeit installiert.)
Entpacken von cups-dbg (aus .../cups-dbg_1.5.3-0ubuntu6_i386.deb) ...
cups-dbg (1.5.3-0ubuntu6) wird eingerichtet ...

~$ ulimit -c unlimited

~$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices

~$ sudo gdb -c core /usr/lib/cups/backend/usb
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /usr/lib/cups/backend/usb...Reading symbols from /usr/lib/debug/.build-id/1e/8ca22c9b6dc7a5de728fa24fbaba456a35ede2.debug...done.
done.
[New LWP 6250]

warning: Can't read pathname for load map: Eingabe-/Ausgabefehler.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/lib/cups/backend/usb'.
Program terminated with signal 11, Segmentation fault.
#0 0x006d945f in ?? () from /lib/i386-linux-gnu/libc.so.6
(gdb)

(gdb) bt
#0 0x006d945f in ?? () from /lib/i386-linux-gnu/libc.so.6
#1 0x006d94dd in opendir () from /lib/i386-linux-gnu/libc.so.6
#2 0x00c3ec2e in ?? () from /lib/i386-linux-gnu/libusb-1.0.so.0
#3 0x00c3704c in libusb_get_device_list () from /lib/i386-linux-gnu/libusb-1.0.so.0
#4 0x00c20bea in find_device (cb=0xc208d0 <list_cb>, data=0x0) at usb-libusb.c:847
#5 0x00c1f957 in main (argc=1, argv=0xbfa27e34) at usb.c:177
(gdb)

(gdb) quit

Fix uploaded as cups_1.6.2-1ubuntu6. Most probably it will not go into today's release of Raring but will be made available as an update (SRU).

A backport into Precise (LTS for 5 years!) would be appreciated!

Thanks again for the fast response.

Hi! This is missing a Test Case and Regression Potential.

https://wiki.ubuntu.com/StableReleaseUpdates#Procedure

The fix for Raring is uploaded to the -proposed repository. As soon as it gets approved instructions for testing it will get posted here. Please test and give your feedback. This is required for the package to get an official update.

SRU team: debdiff attached.

The fix for Precise is uploaded to the -proposed repository. As soon as it gets approved instructions for testing it will get posted here. Please test and give your feedback. This is required for the package to get an official update.

SRU team: debdiff attached.

The fix is also submitted upstream and committed to the GIT repository of CUPS at Debian. When the next CUPS package at Debian is released we will sync it to Saucy making the fix available.

cups package re-uploaded to also cover bug 1133794, new debdiff attached.

Hello LAZA, or anyone else affected,

Accepted cups into raring-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/cups/1.6.2-1ubuntu6 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Hello LAZA, or anyone else affected,

Accepted cups into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/cups/1.5.3-0ubuntu7 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Package re-uploaded due to FTBFS. Please test cups 1.6.2-1ubuntu7 as described above as soon as it gets approved.

SRU team: New debdiff attached.

Hello LAZA, or anyone else affected,

Accepted cups into raring-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/cups/1.6.2-1ubuntu7 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Now I have also re-uploaded the Precise package because of the same FTBFS. Please test cups 1.5.3-0ubuntu8 as described above as soon as it gets approved.

SRU team: New debdiff attached.

This bug was fixed in the package cups - 1.6.2-7

---------------
cups (1.6.2-7) experimental; urgency=low

  * Update the patch adding libusb error handling to also discard its
    errors in the counting of warning messages; this should make the
    error-suite succeed in more cases.

 -- Didier Raboud <email address hidden> Fri, 03 May 2013 11:30:59 +0200

Hello LAZA, or anyone else affected,

Accepted cups into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/cups/1.5.3-0ubuntu8 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Test version: cups -- 1.5.3-0ubuntu8

1. install all updates

2. reproduce bug
sudo /usr/lib/cups/backend/usb
--> crashes as expected

3. install updated CUPS version

4. check version
~$ dpkg -l | grep 'cups'
ii bluez-cups 4.98-2ubuntu7
ii cups 1.5.3-0ubuntu8
ii cups-bsd 1.5.3-0ubuntu8
ii cups-client 1.5.3-0ubuntu8
ii cups-common 1.5.3-0ubuntu8
ii cups-dbg 1.5.3-0ubuntu8
ii cups-filters 1.0.18-0ubuntu0.1
ii cups-ppdc 1.5.3-0ubuntu8
ii ghostscript-cups 9.05~dfsg-0ubuntu4.2
ii libcups2 1.5.3-0ubuntu6
ii libcupscgi1 1.5.3-0ubuntu6
ii libcupsdriver1 1.5.3-0ubuntu6
ii libcupsfilters1 1.0.18-0ubuntu0.1
ii libcupsimage2 1.5.3-0ubuntu6
ii libcupsmime1 1.5.3-0ubuntu6
ii libcupsppdc1 1.5.3-0ubuntu6
ii python-cups 1.9.61-0ubuntu2
ii python-cupshelpers 1.3.8+20120201-0ubuntu8.1

5. reproduce bug
~$ ulimit -c unlimited
~$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices
WARNING: Unable to initialize USB access via libusb, libusb error -99

--> no crash
--> setting to 'verification-done'

Rereading my comment, i saw, that i forget to update the libraries from cups.

Done this in Synaptic and re-testing the same - same error but no crash.

Thanks to all for the fast fix!

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.

This bug was fixed in the package cups - 1.5.3-0ubuntu8

---------------
cups (1.5.3-0ubuntu8) precise-proposed; urgency=low

  * debian/patches/usb-backend-do-not-crash-if-usb-disabled-in-bios.patch:
    Add patch to test suite to ignore the newly introduced warning message.
    This message gets regularly issued on build servers which use virtual
    machines without access to the host's USB and so the test suite fails due
    to an extra warning. Due to this there was a FTBFS in the previous release
    (LP: #1108719).
 -- Till Kamppeter <email address hidden> Fri, 10 May 2013 19:51:56 +0200

raring has seen the end of its life and is no longer receiving any updates. Marking the raring task for this ticket as "Won't Fix".