On Fri, Apr 05, 2013 at 12:23:30AM +0200, Arkadiusz Miskiewicz wrote: > On Thursday 14 of March 2013, Arkadiusz Miśkiewicz wrote: > > Hi. > > > > Just hit watchdog related oops in 3.8.3 kernel. Unfortunately photos only. > > > > http://ixion.pld-linux.org/~arekm/watchdog-oops-3.8.3/IMG_8942.JPG > > http://ixion.pld-linux.org/~arekm/watchdog-oops-3.8.3/IMG_8941.JPG > > 3.9git from today isn't any better unfortunately: > > http://ixion.pld-linux.org/~arekm/watchdog-oops-3.9git.jpg > > > > > oops started after I enabled systemd watchdog functionality. Cannot > > reproduce easily. > > > > watchdog here (thinkpad t400) is: > > iTCO_wdt: Found a ICH9M-E TCO device (Version=2, TCOBASE=0x1060) > > Wonder if there is a race condition in the watchdog driver: The watchdog device is opened before watchdog_register_device returns. I suspect systemd waits for a udev event, or by some other means detects that /dev/watchdog was created, and opens it immediately.
I just have no idea where exactly the race condition, if there is one, is hiding. Or maybe I am completely off track. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
