panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830dbf1c) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8308e3c2,ffffffff8302f667,90,ffffffff8308f614) at __assert+0x29
uvm_pagealloc_pg(fffffd8007b82e40,fffffd807ec5a8e8,1a775c000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd807ec5a8e8,1a775c000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd807ec5a8b8,34eeb89b000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd807ec5a8b8,34eeb89b000,5fbb0000,3,21) at pmap_enter+0x389
uvm_fault_upper(ffff800030d8bf80,ffff800030d8bfb8,ffff800030d8be80,0) at uvm_fault_upper+0x376 sys/uvm/uvm_fault.c:1056
uvm_fault(fffffd806eca78a0,34eeb89b000,0,1) at uvm_fault+0x1b2 sys/uvm/uvm_fault.c:608
upageflttrap(ffff800030d8c100,34eeb89b000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800030d8c100) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7e3b6fbfbb90, count: 246
End of stack trace.