On a booted 5.2.5, at the point where I see the panic I get : [ 0.183953] efi: Error mapping PA 0x0 -> VA 0x0! [ 0.183956] efi: Error mapping PA 0x90000 -> VA 0x90000! [ 0.183959] efi: Error mapping PA 0x100000 -> VA 0x100000! [ 0.183961] efi: Error mapping PA 0x2165000 -> VA 0x2165000! [ 0.183963] efi: Error mapping PA 0x2200000 -> VA 0x2200000! [ 0.183966] efi: Error mapping PA 0x4265000 -> VA 0x4265000! [ 0.183968] efi: Error mapping PA 0x30ae7000 -> VA 0x30ae7000! [ 0.183971] efi: Error mapping PA 0x3456b000 -> VA 0x3456b000! [ 0.183973] efi: Error mapping PA 0x5d590000 -> VA 0x5d590000! [ 0.183975] efi: Error mapping PA 0x7c84e000 -> VA 0x7c84e000! [ 0.183978] efi: Error mapping PA 0x7c864000 -> VA 0x7c864000! [ 0.183980] efi: Error mapping PA 0x7c86f000 -> VA 0x7c86f000! [ 0.183982] efi: Error mapping PA 0x7c891000 -> VA 0x7c891000! [ 0.183985] efi: Error mapping PA 0x7c8cb000 -> VA 0x7c8cb000! [ 0.183987] efi: Error mapping PA 0x7c8d0000 -> VA 0x7c8d0000! [ 0.183989] efi: Error mapping PA 0x7d0d6000 -> VA 0x7d0d6000! [ 0.183992] efi: Error mapping PA 0x7d0d9000 -> VA 0x7d0d9000! [ 0.183994] efi: Error mapping PA 0x7d0de000 -> VA 0x7d0de000! [ 0.183996] efi: Error mapping PA 0x7d0df000 -> VA 0x7d0df000! [ 0.183999] efi: Error mapping PA 0x7d11c000 -> VA 0x7d11c000! [ 0.184001] efi: Error mapping PA 0x7d11d000 -> VA 0x7d11d000! [ 0.184003] efi: Error mapping PA 0x7e776000 -> VA 0x7e776000! [ 0.184006] efi: Error mapping PA 0x7e78b000 -> VA 0x7e78b000! [ 0.184008] efi: Error mapping PA 0x7e7cb000 -> VA 0x7e7cb000! [ 0.184010] efi: Error mapping PA 0x7e7cc000 -> VA 0x7e7cc000! [ 0.184013] efi: Error mapping PA 0x7e7d6000 -> VA 0x7e7d6000! [ 0.184015] efi: Error mapping PA 0x7e7d9000 -> VA 0x7e7d9000! [ 0.184017] efi: Error mapping PA 0x7e7dd000 -> VA 0x7e7dd000! [ 0.184020] efi: Error mapping PA 0x7e7e0000 -> VA 0x7e7e0000! [ 0.184022] efi: Error mapping PA 0x7e7e2000 -> VA 0x7e7e2000! [ 0.184025] efi: Error mapping PA 0x7e7e3000 -> VA 0x7e7e3000! [ 0.184027] efi: Error mapping PA 0x7e7e6000 -> VA 0x7e7e6000! [ 0.184029] efi: Error mapping PA 0x7e7e9000 -> VA 0x7e7e9000! [ 0.184032] efi: Error mapping PA 0x7e7eb000 -> VA 0x7e7eb000! [ 0.184034] efi: Error mapping PA 0x7e7ec000 -> VA 0x7e7ec000! [ 0.184036] efi: Error mapping PA 0x7e801000 -> VA 0x7e801000! [ 0.184039] efi: Error mapping PA 0x7e812000 -> VA 0x7e812000! [ 0.184041] efi: Error mapping PA 0x7e823000 -> VA 0x7e823000! [ 0.184043] efi: Error mapping PA 0x7e82b000 -> VA 0x7e82b000! [ 0.184046] efi: Error mapping PA 0x7e82e000 -> VA 0x7e82e000! [ 0.184048] efi: Error mapping PA 0x7e831000 -> VA 0x7e831000! [ 0.184050] efi: Error mapping PA 0x7e94d000 -> VA 0x7e94d000! [ 0.184053] efi: Error mapping PA 0x7e96f000 -> VA 0x7e96f000! [ 0.184055] efi: Error mapping PA 0x7e997000 -> VA 0x7e997000! [ 0.184057] efi: Error mapping PA 0x7e9a4000 -> VA 0x7e9a4000! [ 0.184060] efi: Error mapping PA 0x7e9b2000 -> VA 0x7e9b2000! [ 0.184062] efi: Error mapping PA 0x7ec26000 -> VA 0x7ec26000! [ 0.184065] efi: Error mapping PA 0x7ec27000 -> VA 0x7ec27000! [ 0.184067] efi: Error mapping PA 0x7f5f7000 -> VA 0x7f5f7000! [ 0.184069] efi: Error mapping PA 0x7f6f7000 -> VA 0x7f6f7000! [ 0.184072] efi: Error mapping PA 0x7f7e1000 -> VA 0x7f7e1000! [ 0.184074] efi: Error mapping PA 0x7f7f7000 -> VA 0x7f7f7000! [ 0.184076] efi: Error mapping PA 0x7f8ca000 -> VA 0x7f8ca000! [ 0.184079] efi: Error mapping PA 0x7f8f7000 -> VA 0x7f8f7000! [ 0.184081] efi: Error mapping PA 0x7fb7b000 -> VA 0x7fb7b000! [ 0.184083] efi: Error mapping PA 0x7fb89000 -> VA 0x7fb89000! [ 0.184086] efi: Error mapping PA 0x7fbbb000 -> VA 0x7fbbb000! [ 0.184088] efi: Error mapping PA 0x7fbbc000 -> VA 0x7fbbc000! [ 0.184091] efi: Error mapping PA 0x100000000 -> VA 0x100000000! [ 0.184093] efi: Error mapping PA 0xfff90000 -> VA 0xfff90000! [ 0.184097] efi: Error ident-mapping new memmap (0x17b5a4000)! Le mar. 6 août 2019 à 11:39, Antoine Reversat a écrit : > Sorry for the maybe not so helpful title. > > Here is the problem : > I'm running Linux on a Mac pro 1,1 (the first x86 mac pro). It's a dual > xeon 5150 with ECC ram. I have 2 ram kits in it : 2x512M and 2x2G (this one > : > http://www.ec.kingston.com/ecom/hyperx_us/partsinfo.asp?root=&ktcpartno=KTA-MP667AK2/4G > ) > > If I only have the 2x512M kit everything works fine for all kernel > versions but if I have both kits or just the 2x2G kit any kernel above 4.10 > panics very early on (picture of said panic https://imgur.com/a/PipU5Oc). > The picture was taken on 4.15 (using earlyprintk=efi,keep) on other > versions even using earlyprintk I don't get any output. > > I have been trying several kernels and everything up to 4.11 works no > problem. Then on 4.11 I got a panic which mentionned NX and pages being in > W+X which prompted me to try noexec=off on newer versions and that fixes > the panic. This works up to 5.2.5. > > /proc/cpuinfo reports that the CPU support the NX flag. > > I would need help in order to troubleshoot this further. >