panic: kernel diagnostic assertion "pr->ps_threadcnt == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_exit.c", line 886
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
* 95381   6227      0     0x14000      0x200    0  reaper
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83361bd1) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff8339cfcd,ffffffff833c082e,376,ffffffff833c0863) at __assert+0x29 sys/kern/subr_prf.c:-1
process_zap(ffff8000ffff8498) at process_zap+0x31d sys/kern/kern_exit.c:887
reaper(ffff80002a73ca60) at reaper+0x290 sys/kern/kern_exit.c:521
end trace frame: 0x0, count: 10
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