panic: kernel diagnostic assert ion "ps->ps_uvncount == 0" fail ed: file "/syzkaller/managers/m ulticore/kernel/sys/kern/kern_u nveil.c", line 188 Starting stack trace... panic(ffffffff830e4cb7) at panic+0x1d0 sys/kern/subr_prf.c:229 __assert(ffffffff8309dd67,ffffffff83057a74,bc,ffffffff8301a4f3) at __assert+0x29 unveil_destroy(ffff800031f8e448) at unveil_destroy+0x1dd sys/kern/kern_unveil.c:188 exit1(ffff800031f8a2c8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800031f8a2c8,ffff80002fb837f0,ffff80002fb83740) at sys_exit+0x1a syscall(ffff80002fb837f0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002fb837f0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70e5703da830, count: 250 End of stack trace.