NetworkManager crashed with signal 2 (SIGINT) when gps device sending binary data is attached to USB port

[Andrea Foni]

Binary package hint: network-manager

Hi.

The issue comes when a GPS device (u-blox chipset), that implement a standard communication class (Abstract Line Control Model) to parse positioning information in binary format, is connected to a ubuntu 8.10 machine.

The issue is coming from the fact that, in the ubuntu version of the connection manager, there is a parse-modem functionality, that open the newly detected device to verify if its' a modem, without the option O_NOCTTY.

The GPS device, with a special configuration that send continuosly binary data, is then sending the escape character to the CM, and therefore the sistem detects a SIGINT signal and terminates.

The solution would be to add the option O_NOCTTY in the open of the device, inside the probe_modem() function, in the probe-modem.c module.

I have tested that after this modification the CM do not crash any more. The patch is enclosed.

Ciao,

Andrea

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
NonfreeKernelModules: nvidia
Package: network-manager 0.7~~svn20081018t105859-0ubuntu1.8.10.2
ProcEnviron:
 PATH=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/ARC/MetaWare/arc/bin
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
Uname: Linux 2.6.27-11-generic i686
WpaSupplicantLog:

[Alexander Sack (asac)]

the way modem probing is done has been changed considerably in jaunty. can you see if this is still a problem there?

[Andrea Foni (andrea-foni)]

No, the NetworkManager in the Jaunty release candidate (I see version 0.7.1-rc4.1.cf199a964-0ubuntu2) is not affected by this problem.

[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]