panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e03cc) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff83093146,ffffffff8303a683,90,ffffffff8309a5c3) at __assert+0x29
uvm_pagealloc_pg(fffffd800847b320,fffffd80676529e8,3a11d4a000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd80676529e8,3a11d4a000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd80676529b8,7423a95f6000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd80676529b8,7423a95f6000,52f6b000,1,20) at pmap_enter+0x389
uvm_fault_upper_lookup(ffff800032e060a0,ffff800032e060d8,ffff800032e05fa0,ffff800032e06020) at uvm_fault_upper_lookup+0x389
uvm_fault(fffffd807b3331c8,7423a95f7000,0,1) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff800032e06220,7423a95f7b70) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800032e06220) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7423a95f7b90, count: 246
End of stack trace.