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 <o...@debian.org> Fri, 03 May 2013 11:30:59 +0200
** Changed in: cups (Ubuntu Saucy)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1108719
Title:
usb crashed with SIGSEGV in opendir() -- USB ports are in BIOS
disabled --> cupsd crashes every time
Status in “cups” package in Ubuntu:
Fix Released
Status in “cups” source package in Precise:
Fix Committed
Status in “cups” source package in Raring:
Fix Committed
Status in “cups” source package in Saucy:
Fix Released
Bug description:
On 4 machines is USB for safety disabled, an HP DeskJet 500 is
attached to one machine via LTP (IEEE 1284) and the other machines use
the network share... - all working well.
But every time i open up CUPS for configuration or something the process
/usr/sbin/cupsd
crashes and an crash report is generated (attached).
.
Xubuntu 12.04.1
Linux icafe-a 3.2.0-36-generic #57-Ubuntu SMP Tue Jan 8 21:41:24 UTC
2013 i686 i686 i386 GNU/Linux
CUPS
Versions:
1.5.3-0ubuntu6
(/var/lib/apt/lists/de.archive.ubuntu.com_ubuntu_dists_precise-updates_main_binary-i386_Packages)
(/var/lib/dpkg/status)
BTW: I was also not able to send the bug via apport, this crashes with
"package not installed".
[IMPACT]
If on a machine (mainly servers and high-security environments) the
USB is turned off in the BIOS or a very old pre-USB-era machine is
used the attempt of CUPS to detect available printers makes the USB
CUPS backend being called and the backend crashes then due to absense
of USB . The crash itself is harmless, but it makes Apport popping up
with a crash report which is annoying.
[TESTCASE]
Turn off the USB support completely in the BIOS setup of the machine,
boot and run either
lpinfo -v
or
sudo /usr/lib/cups/backend/usb
A crash report will pop up. Close it, do not generate the actual bug
report.
After installing the proposed package the backend will not crash any
more and so no Apport pop-up will occur.
[Regression Potential]
The patch is very simple and adds only an error check to handle an
error on initializing libusb properly. The probability of a regression
caused by this is practically zero.
NOTE: As the archives for the new development cycle are not open yet I
am posting this SRU proposal without a fixed package in the new
development branch. The fix is committed to Debian's GIT repo of CUPS
though and so it will appear in the new development cycle with the
first sync of the cups package.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1108719/+subscriptions
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