Please consider applying commit fc61e83a29308601e6e8a0759e24fc8fe2122692 watchdog: Revert "iTCO_wdt: all versions count down twice" to 4.13-stable and 4.12-stable. If this patch is missing, some systems silently reboot when the watchdogs fires prematurely. Only 4.12 and 4.13 are affected. https://bugzilla.kernel.org/show_bug.cgi?id=196509 Thanks, Martin -- Dr. Martin Wilck <mwilck@xxxxxxxx>, Tel. +49 (0)911 74053 2107 SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg)