panic: kernel diagnostic assertion "ps->ps_uvncount == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 200
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 203045  43838      0     0x14000      0x200    1  reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
__assert(ffffffff82200a0d,ffffffff822060f7,c8,ffffffff821bdd13) at __assert+0x2b sys/kern/subr_prf.c:154
unveil_destroy(ffff800020adc700) at unveil_destroy+0x19f sys/kern/kern_unveil.c:200
exit1(ffff800020a88558,0,1) at exit1+0x38f sys/kern/kern_exit.c:218
sys_exit(ffff800020a88558,ffff800020b73650,ffff800020b736a0) at sys_exit+0x17 sys/kern/kern_exit.c:94
syscall(ffff800020b73720) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020b73720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall(6,1,0,1,0,7f7ffffbcb54) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffbcb20, count: 7
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