panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/multicore/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(ffffffff8279c7bf) at panic+0x17b sys/kern/subr_prf.c:198
__assert(ffffffff8281f037,ffffffff8282537a,bc,ffffffff827bb2af) at __assert+0x29 sys/kern/subr_prf.c:157
unveil_destroy(ffff80002e459940) at unveil_destroy+0x1a4 sys/kern/kern_unveil.c:188
exit1(ffff8000230f7b68,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220
sys_exit(ffff8000230f7b68,ffff80002e4d1a60,ffff80002e4d1ab0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e4d1b30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002e4d1b30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71c8837d67c0, count: 7
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