panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff82958e61) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8290b071,ffffffff828b192f,90,ffffffff829115d1) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8007c30700,fffffd807c10d148,153a000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd807c10d148,153a000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd807c10d0f8,54ea9430000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd807c10d0f8,54ea9430000,7c9cc000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_upper_lookup(ffff80002a258ac0,ffff80002a258af8,ffff80002a2589c0,ffff80002a258a40) at uvm_fault_upper_lookup+0x2b2
uvm_fault(fffffd805a7db530,54ea942e000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a258c40,54ea942ea48) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a258c40) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x54e141ab370, count: 246
End of stack trace.