panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff8295403c) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8290ac72,ffffffff828b2ae3,90,ffffffff829126cf) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8007938f40,fffffd806b6f68f8,3ec9cea000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806b6f68f8,3ec9cea000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd806b6f68c8,7d939d48f000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd806b6f68c8,7d939d48f000,7cf96000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_upper_lookup(ffff8000309bf080,ffff8000309bf0b8,ffff8000309bef80,ffff8000309bf000) at uvm_fault_upper_lookup+0x2b2
uvm_fault(fffffd8062ec0530,7d939d490000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605
upageflttrap(ffff8000309bf200,7d939d490680) at upageflttrap+0x8b sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000309bf200) at usertrap+0x227 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7d939d4906a0, count: 246
End of stack trace.