Re: [Crash-utility] [PATCH] x86_64: print wrong value for RDX register.

Hi Dave, crash has a funny bug that bt command wrongly shows RCX value as RDX value for exception stack of x86_64 xen hypervisor. Here is an example. RDX is 0xcfc but bt shows 0x4 (== RCX) for it. ffff828c802f0fa0: 0000000000000246 00000000ffffffff F............... R8 RAX ffff828c802f0fb0: 0000000000000004 0000000000000cfc ................ RCX ^^^^ RDX ^^^^ ffff828c802f0fc0: 0000000000000000 00000000800f0000 ................ RSI RDI crash> bt PCPU: 0 VCPU: ffff8300695be080 #0 [ffff828c802f0f40] kexec_crash at ffff828c8010d227 #1 [ffff828c802f0f50] handle_ist_exception at ffff828c801926f7 [exception RIP: pci_conf_read+130] RIP: ffff828c801537e2 RSP: ffff828c802f7de0 RFLAGS: 00000006 RAX: 00000000ffffffff RBX: 0000000000000004 RCX: 0000000000000004 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 00000000800f0000 ^^^^ RBP: 0000000000000cfc R8: 0000000000000246 R9: 0000000000000000 R10: 0000000000000000 R11: 000000000000ffff R12: 0000000000000004 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8300695be080 ORIG_RAX: 0000000200000000 CS: e008 SS: 0000 --- <exception stack> --- #2 [ffff828c802f7de0] guest_io_read at ffff828c80148345 #3 [ffff828c802f7e20] do_general_protection at ffff828c8014a00c #4 [ffff828c802f7eb0] reprogram_timer at ffff828c8012c55e #5 [ffff828c802f7f20] handle_exception_saved at ffff828c80192495 crash> Signed-off-by: Seiichi Ikarashi <s.ikarashi(a)jp.fujitsu.com&gt; --- a/x86_64.c 2012-02-04 04:22:33.000000000 +0900 +++ b/x86_64.c 2012-02-21 17:04:09.032121837 +0900 @@ -6562,7 +6562,7 @@ x86_64_print_eframe_regs_hyper(struct bt fprintf(fp, " RAX: %016lx RBX: %016lx RCX: %016lx\n", up[10], up[5], up[11]); fprintf(fp, " RDX: %016lx RSI: %016lx RDI: %016lx\n", - up[11], up[13], up[14]); + up[12], up[13], up[14]); fprintf(fp, " RBP: %016lx R8: %016lx R9: %016lx\n", up[4], up[9], up[8]); fprintf(fp, " R10: %016lx R11: %016lx R12: %016lx\n",