Hi guys, I'm encountering a reproduceable problem with hardened 2.6.26-r9 and 2.6.27-r8 that wasn't there with 2.6.25-r13 on i686, and isn't there with amd64 using approximately the same kernel configuration in every case. I've been able to reproduce it in vmware, qemu and on physical boxes, one with a Intel(R) Core(TM)2 Quad CPU Q6700, the other AMD Athlon(tm) 64 FX-62 Dual Core. It a stack fault in kernel mode, but I can't pin it down further. It happens almost immediately after the bootloader passes control to the kernel. The best error message comes from qemu which gives the states of the registers. Here's the error message from a bootable ISO I made suing 2.6.26-r9. Any idea where I can start tackling this one?
# qemu -cdrom th-i686-20090307-RC3.iso qemu: fatal: triple fault EAX=000000ff EBX=0153cac0 ECX=0013a2d1 EDX=0013a2d1 ESI=0024c000 EDI=01400000 EBP=01541a20 ESP=01541a10 EIP=0153a2d0 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0018 00000000 ffffffff 00cf9300 CS =0010 00000000 ffffffff 00cf9b00 SS =0018 00000000 ffffffff 00cf9300 DS =0018 00000000 ffffffff 00cf9300 FS =0018 00000000 ffffffff 00cf9300 GS =0018 00000000 ffffffff 00cf9300 LDT=0000 00000000 00000000 00008000 TR =0020 00001000 00000067 00008900 GDT= 000928f0 00000027 IDT= 00000000 00000000 CR0=60000011 CR2=00000000 CR3=00000000 CR4=00000000 CCS=0024c000 CCD=ffeee2d1 CCO=SUBL FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 Aborted -- Anthony G. Basile, Ph.D. Chair of Information Technology D'Youville College Buffalo, NY 14201 USA (716) 829-8197
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