panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff828720e3) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff828f97d3,ffffffff82865637,90,ffffffff8284ba40) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006ec9680,fffffd807c030040,1c3a99000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd8006ec9680,fffffd807c030040,1c3a99000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd807c030040,1c3a99000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd807c030010,3875329f000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd807c030010,3875329f000,5abce000,3,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_upper_lookup(ffff80002e2b8060,ffff80002e2b8098,ffff80002e2b7f60,ffff80002e2b7fe0) at uvm_fault_upper_lookup+0x2c0 sys/uvm/uvm_fault.c:895
uvm_fault(fffffd806bbb1398,387532a1000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002e2b81e0,387532a1cb8) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002e2b81e0) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7bcb8a934570, count: 246
End of stack trace.