panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff8295774a) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8290ab3a,ffffffff828ae0f5,90,ffffffff8290dddc) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006f6f920,fffffd805e873700,5655d2000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd805e873700,5655d2000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd805e8736d0,acaba4b9000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd805e8736d0,acaba4b9000,7978f000,4,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_lower_lookup(ffff800033f2b270,ffff800033f2b2a8,ffff800033f2b1f0) at uvm_fault_lower_lookup+0x29b sys/uvm/uvm_fault.c:1192
uvm_fault_lower(ffff800033f2b270,ffff800033f2b2a8,ffff800033f2b1f0,0) at uvm_fault_lower+0x62 sys/uvm/uvm_fault.c:1227
uvm_fault(fffffd807e4ff530,acaba4bc000,0,4) at uvm_fault+0x255 sys/uvm/uvm_fault.c:637
upageflttrap(ffff800033f2b3f0,acaba4bcceb) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800033f2b3f0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c23a252e6b0, count: 245
End of stack trace.