12AUG Panic

Machine-check capabilities: 0x0000000000001c09
 family: 6 model: 44 stepping: 2 microcode: 31
 signature: 0x206c2
 Intel(R) Xeon(R) CPU           X5690  @ 3.47GHz
 9 error-reporting banks
Processor 2: IA32_MCG_STATUS: 0x0000000000000004
 IA32_MC5_STATUS(0x415): 0xbe00000000800400
 IA32_MC5_ADDR(0x416):   0x000000010f872b90
 IA32_MC5_MISC(0x417):   0x0000000000000000
Processor 3: IA32_MCG_STATUS: 0x0000000000000004
 IA32_MC5_STATUS(0x415): 0xbe00000000800400
 IA32_MC5_ADDR(0x416):   0x000000010f872b90
 IA32_MC5_MISC(0x417):   0x0000000000000000
mp_kdp_enter() timed-out on cpu 0, NMI-ing
mp_kdp_enter() NMI pending on cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
mp_kdp_enter() timed-out during locked wait after NMI;expected 24 acks but received 1 after 16942900 loops in 1728999779 ticks
panic(cpu 0 caller 0xffffff80172471ec): "Machine Check at 0xffffff801724d241, registers:\n" "CR0: 0x000000008001003b, CR2: 0x0000000106de20f0, CR3: 0x000000001c528000, CR4: 0x00000000000226e0\n" "RAX: 0x0000000000000000, RBX: 0x0000000000000003, RCX: 0x000000004a07ff6f, RDX: 0x000000000000ea3e\n" "RSP: 0xffffff8ac61d3d00, RBP: 0xffffff8ac61d3d00, RSI: 0x0000000000000002, RDI: 0x0000000000000130\n" "R8:  0xffffffffffffffff, R9:  0x000000006721336a, R10: 0x0000000000000000, R11: 0xffffff8017aa1700\n" "R12: 0x0000ea3efd1f1109, R13: 0xffffff80da034780, R14: 0x0000ea3efd1f1f97, R15: 0xffffff7f9a2f24a8\n" "RFL: 0x0000000000000006, RIP: 0xffffff801724d241, CS:  0x0000000000000008, SS:  0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.141.1/osfmk/i386/trap_native.c:168
Backtrace (CPU 0), Frame : Return Address
0xffffff8016f51310 : 0xffffff801711a65d