panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff82954e49) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8290ac23,ffffffff828ae780,90,ffffffff8290e137) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd80081af740,fffffd807d524420,7205d0000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd807d524420,7205d0000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd807d5243f0,e40ba12a000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd807d5243f0,e40ba12a000,70cab000,3,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_upper_lookup(ffff80002a231c70,ffff80002a231ca8,ffff80002a231b70,ffff80002a231bf0) at uvm_fault_upper_lookup+0x2b2
uvm_fault(fffffd805761bc20,e40ba12b000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a231df0,e40ba12b160) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a231df0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0xe40ba12b1f0, count: 246
End of stack trace.