Recent -current cpucontrol panic: [cpuctl, 129]: cannot bind to target cpu 1

[Konstantin Belousov]

On Sun, May 22, 2016 at 09:47:08AM +0300, Andrey Chernov wrote:
> With microcode_update_enable="YES" in rc.conf:
> 
> db:0:kdb.enter.panic>  show pcpu
> cpuid        = 1
> dynamic pcpu = 0xfffffe02ac1fd300
> curthread    = 0xfffff8000ae75a00: pid 736 "cpucontrol"
> curpcb       = 0xfffffe023754eb80
> fpcurthread  = none
> idlethread   = 0xfffff800022b5000: tid 100003 "idle: cpu1"
> curpmap      = 0xfffff8000af02138
> tssp         = 0xffffffff80c1cf78
> commontssp   = 0xffffffff80c1cf78
> rsp0         = 0xfffffe023754eb80
> gs32p        = 0xffffffff80c237d0
> ldt          = 0xffffffff80c23810
> tss          = 0xffffffff80c23800
> db:0:kdb.enter.panic>  bt
> Tracing pid 736 tid 100121 td 0xfffff8000ae75a00
> kdb_enter() at kdb_enter+0x3b/frame 0xfffffe023754e620
> vpanic() at vpanic+0x19f/frame 0xfffffe023754e6a0
> kassert_panic() at kassert_panic+0x126/frame 0xfffffe023754e710
> cpuctl_do_cpuid_count() at cpuctl_do_cpuid_count+0x85/frame
> 0xfffffe023754e750
> cpuctl_ioctl() at cpuctl_ioctl+0x389/frame 0xfffffe023754e800
> devfs_ioctl_f() at devfs_ioctl_f+0x156/frame 0xfffffe023754e860
> kern_ioctl() at kern_ioctl+0x204/frame 0xfffffe023754e8c0
> sys_ioctl() at sys_ioctl+0x171/frame 0xfffffe023754e9a0
> amd64_syscall() at amd64_syscall+0x28e/frame 0xfffffe023754eab0
> Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe023754eab0
> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8009778ea, rsp =
> 0x7fffffffe788, rbp = 0x7fffffffe7d0 ---

Show verbose dmesg of your boot.
What scheduler do you use ?

In the fired KASSERT, add printout of td->td_oncpu and show the updated
panic message.