panic with 1 spinlocks held
panic: chooseproc: at least the first lp was good
cpuid = 2
Trace beginning at frame 0xfffff80118c977f8
bsd4_release_curproc() at bsd4_release_curproc+0x89a 0xffffffff8066874a 
bsd4_release_curproc() at bsd4_release_curproc+0x89a 0xffffffff8066874a 
bsd4_acquire_curproc() at bsd4_acquire_curproc+0x17d 0xffffffff80669d7d 
syscall2() at syscall2+0x213 0xffffffff80bd6b03 
Debugger("panic")
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>