login: 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(fffffd8008b7ede0,fffffd806be18800,3be8153000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be18800,3be8153000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be187d0,77d02a7f0000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be187d0,77d02a7f0000,54f8a000,3,30) at pmap_enter+0x389 uvm_fault_upper_lookup(ffff80002a0b8da0,ffff80002a0b8dd8,ffff80002a0b8ca0,ffff80002a0b8d20) at uvm_fault_upper_lookup+0x389 uvm_fault(fffffd806c947538,77d02a7f3000,0,1) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a0b8f20,77d02a7f3e40) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a0b8f20) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x77d02a7f3e70, count: 246 End of stack trace.