panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff828a7a20) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8292efe7,ffffffff8289445e,90,ffffffff8287a4b1) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8007656d80,fffffd806b9606f8,65ba7b000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8007656d80,fffffd806b9606f8,65ba7b000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd806b9606f8,65ba7b000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b9606c8,cb74f686000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd806b9606c8,cb74f686000,68df2000,3,23) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2722
udv_fault(ffff80002bca6cc0,cb74f686000,ffff80002bca6c40,1,0,0,addd8178cb9f5234,ffff80002bca6cc0) at udv_fault+0x19e sys/uvm/uvm_device.c:374
uvm_fault(fffffd806960b1e0,cb74f686000,0,1) at uvm_fault+0x1c1 sys/uvm/uvm_fault.c:623
upageflttrap(ffff80002bca6e40,cb74f686008) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002bca6e40) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7e0e5caadc80, count: 246
End of stack trace.