panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff833655f5) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833a6252,ffffffff8338c7a7,90,ffffffff8333eae1) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagealloc_pg(fffffd8007832b80,fffffd806ae01130,1d918000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707
uvm_pagealloc(fffffd806ae01130,1d918000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913
pmap_get_ptp(fffffd806ae01100,76462772e000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1
pmap_enter(fffffd806ae01100,76462772e000,7e25f000,3,22) at pmap_enter+0x39c sys/arch/amd64/amd64/pmap.c:-1
uvm_fault_upper(ffff80003c93cbf0,ffff80003c93cc28,ffff80003c93caf0) at uvm_fault_upper+0x474 sys/uvm/uvm_fault.c:1139
uvm_fault(fffffd806c239e70,76462772e000,0,2) at uvm_fault+0x178 sys/uvm/uvm_fault.c:641
kpageflttrap(ffff80003c93cd90,76462772e0cc) at kpageflttrap+0x2d1 sys/arch/amd64/amd64/trap.c:-1
kerntrap(ffff80003c93cd90) at kerntrap+0x18a sys/arch/amd64/amd64/trap.c:510
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x6f
syscall(ffff80003c93d010) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c93d010) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76462772e060, count: 243
End of stack trace.