Bug 474362

Summary: hp backend crashes when dbus not running
Product: [Fedora] Fedora Reporter: Pete Wyckoff <pw>
Component: hplipAssignee: Tim Waugh <twaugh>
Status: CLOSED NEXTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 10CC: mlichvar, twaugh
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: 2.8.12-6.fc10 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-03-13 18:35:01 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
hplip dbus bug patch none

Description Pete Wyckoff 2008-12-03 14:32:47 UTC
Created attachment 325540 [details]
hplip dbus bug patch

Description of problem:

HP backend crashes if dbus (messagebus) is not running.

Version-Release number of selected component (if applicable):

hplip-2.8.7-3

How reproducible:

every time

Steps to Reproduce:
1. configure a printer to use hp:/net/hp_LaserJet_...
2. print to it

Additional info:

/var/log/cups/error_log:

I [03/Dec/2008:08:54:22 -0500] [Job 47] Started backend /usr/lib/cups/backend/hp (PID 9219)
E [03/Dec/2008:08:54:23 -0500] PID 9219 (/usr/lib/cups/backend/hp) crashed on signal 6!
I [03/Dec/2008:08:54:23 -0500] Hint: Try setting the LogLevel to "debug" to find out more.
I [03/Dec/2008:08:54:44 -0500] [Job 47] Backend returned status -6 (crashed)

/var/log/messages:

Dec  3 08:54:23 host hp_LaserJet_9050_MFP?ip=10.62.229.18: prnt/backend/hp.c 528: dBus Connection Error (Failed to connect to socket /var/run/dbus/system_bus_socket: Connection refused)!

strace shows that it is libdbus that is killing hplip with SIGABRT:

9219  write(2, "process 9219: "..., 14 <unfinished ...>
9219  write(2, "arguments to dbus_connection_send() were incorrect, assertion \"connection != NULL\" failed in file dbus-connection.c line 3099.\nThis is normally a bug in some application using the D-Bus library.\n"..., 195 <unfinished ...>
9219  write(2, "  D-Bus not built with -rdynamic so unable to print a backtrace\n"..., 64 <unfinished ...>
9219  rt_sigprocmask(SIG_UNBLOCK, [ABRT],  <unfinished ...>
9219  tgkill(9219, 9219, SIGABRT <unfinished ...>
9219  --- SIGABRT (Aborted) @ 0 (0) ---

Patch attached that makes hplip avoid sending messages to dbus if the
connection attempt was unsuccessful.

Comment 1 Tim Waugh 2008-12-11 11:21:49 UTC
Thanks for the patch.

Comment 2 Fedora Update System 2009-01-07 09:14:04 UTC
hplip-2.8.12-1.fc10 has been pushed to the Fedora 10 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update hplip'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F10/FEDORA-2008-11236

Comment 3 Fedora Update System 2009-01-15 03:04:59 UTC
hplip-2.8.12-5.fc10 has been pushed to the Fedora 10 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update hplip'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F10/FEDORA-2008-11236

Comment 4 Fedora Update System 2009-01-29 23:01:48 UTC
hplip-2.8.12-6.fc10 has been pushed to the Fedora 10 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update hplip'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F10/FEDORA-2008-11236

Comment 5 Fedora Update System 2009-03-13 18:34:37 UTC
hplip-2.8.12-6.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.