panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff833b12a8) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833ec8d6,ffffffff833e07d0,90,ffffffff83386d27) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagealloc_pg(fffffd80081d6050,fffffd800b062338,3d8ad96000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707
uvm_pagealloc(fffffd800b062338,3d8ad96000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913
pmap_get_ptp(fffffd800b062300,7b15b2d72000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1
pmap_enter(fffffd800b062300,7b15b2d72000,5cb7c000,3,22) at pmap_enter+0x38a sys/arch/amd64/amd64/pmap.c:-1
uvm_fault_upper(ffff8000347d8e90,ffff8000347d8ec8,ffff8000347d8d90) at uvm_fault_upper+0x338 sys/uvm/uvm_fault.c:1131
uvm_fault(fffffd806033c030,7b15b2d72000,0,2) at uvm_fault+0x198 sys/uvm/uvm_fault.c:635
kpageflttrap(ffff8000347d9040,7b15b2d72c4c) at kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
kerntrap(ffff8000347d9040) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:520
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x6f
syscall(ffff8000347d92d0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000347d92d0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b15b2d72be0, count: 243
End of stack trace.