panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff8295b44d) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8290d634,ffffffff828b50d9,90,ffffffff82914988) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd80082b18a0,fffffd807f001bf0,23fa000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd807f001bf0,23fa000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd807f001ba0,8fe971e3000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd807f001ba0,8fe971e3000,6b64a000,4,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_lower_lookup(ffff80003741a8a0,ffff80003741a8d8,ffff80003741a820) at uvm_fault_lower_lookup+0x29b sys/uvm/uvm_fault.c:1192
uvm_fault_lower(ffff80003741a8a0,ffff80003741a8d8,ffff80003741a820,0) at uvm_fault_lower+0x62 sys/uvm/uvm_fault.c:1227
uvm_fault(fffffd807f002528,8fe971e6000,0,4) at uvm_fault+0x255 sys/uvm/uvm_fault.c:637
upageflttrap(ffff80003741aa20,8fe971e6d6b) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003741aa20) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c20700e1620, count: 245
End of stack trace.