panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e1b4d) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff83095bc7,ffffffff8303c1b4,90,ffffffff8309c0cb) at __assert+0x29
uvm_pagealloc_pg(fffffd8008266c60,fffffd806a2ce128,d96f000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806a2ce128,d96f000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806a2ce0f8,1b2df1c000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806a2ce0f8,1b2df1c000,5ae15000,3,20) at pmap_enter+0x389
uvm_fault_lower_lookup(ffff80002a0a63e0,ffff80002a0a6418,ffff80002a0a6360) at uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192
uvm_fault_lower(ffff80002a0a63e0,ffff80002a0a6418,ffff80002a0a6360,0) at uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227
uvm_fault(fffffd80675fda68,1b2df1f000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637
upageflttrap(ffff80002a0a6560,1b2df1fe5c) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a0a6560) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f0a4c61b8e0, count: 245
End of stack trace.