On Tuesday, November 21, 2017 2:34:03 PM CET Peter Zijlstra wrote: > On Tue, Nov 21, 2017 at 08:04:20PM +0800, Fengguang Wu wrote: > > Hello, > > > > FYI this happens in mainline kernel 4.14.0-00902-g43ff2f4. > > It happens since 4.13. > > > > It occurs in 7 out of 36 boots. > > > > [ 58.171538] no ifx modem active; > > [ 58.211860] ACPI: Preparing to enter system sleep state S5 > > [ 58.216823] reboot: Power down > > [ 58.244526] acpi_power_off called > > [ 61.460467] ------------[ cut here ]------------ > > [ 61.465481] WARNING: CPU: 0 PID: 11 at kernel/sched/core.c:1187 > > set_task_cpu+0x257/0x6b6: > > set_task_cpu at > > kernel/sched/core.c:1187 > > Never seen that before.. but I can't even figure out how CPUs end up > offline in that reboot path :/ > > So far I just get lost in the callback maze... Rafael any clues? >
Nope. We used to offline nonboot CPUs in the reboot path, but we don't seem to be doing that any more.
