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Message #77363
[Bug 1156398] Re: "scp-dbus-service" creates 100s of thousands symlinks to the ppd-file in "/tmp" untill the root filesystem runs out of inodes everytime I print something
** Changed in: system-config-printer (Debian)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1156398
Title:
"scp-dbus-service" creates 100s of thousands symlinks to the ppd-file
in "/tmp" untill the root filesystem runs out of inodes everytime I
print something
Status in “system-config-printer” package in Ubuntu:
Confirmed
Status in “system-config-printer” package in Debian:
Fix Released
Bug description:
When I print e.g. a webpage in Firefox, shortly after the printing finished, the root filesystem is running out of available inodes.
"/tmp/" is populated with hundreds of thousands of symlinks to "/etc/cups/ppd/Hewlett-Packard-hp-LaserJet-4350.ppd" which are all named like "51465xxxxxxxx" (where x is a hexadecimal digit) and are created at a rate of aprox. 1500 new symlinks per second. The filenames are not counted up but seem to appear in random order.
During this time the process "/usr/bin/python /usr/share/system-
config-printer/scp-dbus-service.py" is using ~130% CPU.
As soon as I kill this process, no more symlinks are created.
When I wait for the inodes to run out, this process's CPU usage drops to ~7% for a few seconds before the process suddenly disapears from the process list. This indicates that all the symlinks are created by this one process.
If I delete the symlinks now and print another document, things start
over again.
---+ Furher notes
This does not happen when printing with
lpr
gv
It does happen when printing with
Firefox
Chromium
LibreOffice
An unpriviledged user could break down the system by filling up all
free inodes on the root fs, so this might be security relevant.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: system-config-printer-common 1.3.11+20120807-0ubuntu10
ProcVersionSignature: Ubuntu 3.5.0-25.39-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
NonfreeKernelModules: openafs fglrx
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Mon Mar 18 00:45:56 2013
Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: Transport endpoint is not connected
MachineType: Gigabyte Technology Co., Ltd. GA-A75M-UD2H
MarkForUpload: True
PackageArchitecture: all
Papersize: letter
PpdFiles: Hewlett-Packard-hp-LaserJet-4350: HP LaserJet 4350 pcl3, hpcups 3.12.2
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-25-generic root=/dev/mapper/hostname-root ro splash quiet vt.handoff=7
SourcePackage: system-config-printer
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/03/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F5
dmi.board.name: GA-A75M-UD2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF5:bd11/03/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-A75M-UD2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-A75M-UD2H:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-A75M-UD2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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