i`ve tracked this down to a watchdog issue.
whenever i do "cat /dev/watchdog" - my system reboots after ~1 minute.
i`ve contacted the maintainer of the watchdog subsystem.
looks like a bug to me.
thanks roland
Hi! I think it's not a bug, it's a normal behaviour. The kernel watchdog is normally not active when the machine is booted, waiting for an user-space daemon to start handling of /dev/watchdog file (opening it and manipulating it from time to time to show that it's still alive). When you cat the file, kernel recognizes it as that such an app is taking over control of the watchdog and starts it. However, because cat closes the file immediately, it is not handled anymore and kernel recognizes it as a userspace problem, thus rebooting the machine after the timeout expires. With regards, Pavel Troller