panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff82927f96) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff828e2837,ffffffff82835e39,90,ffffffff828ea7b7) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd80068ddb00,fffffd8062a36020,3f93f8000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd8062a36020,3f93f8000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd8062a36010,7f27f018000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd8062a36010,7f27f018000,75011000,3,22) at pmap_enter+0x2b0
uvm_fault_upper(ffff80002f597710,ffff80002f597748,ffff80002f597610,0) at uvm_fault_upper+0x26f sys/uvm/uvm_fault.c:1056
uvm_fault(fffffd8069cc2018,7f27f018000,0,2) at uvm_fault+0x137 sys/uvm/uvm_fault.c:608
upageflttrap(ffff80002f597890,7f27f018028) at upageflttrap+0x85 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002f597890) at usertrap+0x20e sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7597ff133d10, count: 246
End of stack trace.