panic: kernel diagnostic assertion "pr->ps_threadcnt == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_exit.c", line 886
Starting stack trace...
panic(ffffffff83372854) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b2fbc,ffffffff833d69c1,376,ffffffff833d69f6) at __assert+0x29 sys/kern/subr_prf.c:-1
process_zap(ffff8000ffffa418) at process_zap+0x31d sys/kern/kern_exit.c:887
reaper(ffff80002a72d4c0) at reaper+0x270 sys/kern/kern_exit.c:521
end trace frame: 0x0, count: 253
End of stack trace.