panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 188
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8277c700) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fc096,ffffffff827794fd,bc,ffffffff82799dc4) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff8000ffff6be0) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exclient_loop: send disconnect: Broken pipe