panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830d88d9) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8308fc3c,ffffffff83032856,90,ffffffff83092968) at __assert+0x29
uvm_pagealloc_pg(fffffd800717c6e0,fffffd806b8ff9f0,54bd6a000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806b8ff9f0,54bd6a000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806b8ff9c0,a97ad4b1000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806b8ff9c0,a97ad4b1000,612e2000,3,23) at pmap_enter+0x389
udv_fault(ffff80002a0dc1b0,a97ad4b1000,ffff80002a0dc130,1,0,0,e9e3805654e13a86,ffff80002a0dc1b0) at udv_fault+0x20c sys/uvm/uvm_device.c:372
uvm_fault(fffffd806cdbba68,a97ad4b1000,0,1) at uvm_fault+0x23f sys/uvm/uvm_fault.c:623
upageflttrap(ffff80002a0dc330,a97ad4b1000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a0dc330) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x70048c67bfa0, count: 246
End of stack trace.