Re: [Crash-utility] crash can't handle virsh dump file

Gui Jianfeng wrote: > Dave Anderson wrote: >> ----- "Gui Jianfeng" <guijianfeng(a)cn.fujitsu.com&gt; wrote: >> >>> Dave Anderson wrote: >>>> ----- "Dave Anderson" <anderson(a)redhat.com&gt; wrote: >>>> >>>>> ----- "Paolo Bonzini" <pbonzini(a)redhat.com&gt; wrote: >>>>> >>>>>>> According to coredump, seems crash crashed at get_idt_base(). >>>>>>> device_find_instance() fails to find "cpu" instance. >>>>>> I think Dave already has a patch for this. >>>>>> >>>>>> Paolo >>>>> The patch for get_idt_base() was put in crash version 5.0.4. >>>>> Looking back at the mail archives, though, I don't see what >>>>> version Gui is/was using? >>>>> >>>>> Dave >>>> Now I see with the crash debug output that Gui is using version >>>> 5.0.3. Can you please retry Paolo's patch on top of version >>>> 5.0.4? >>>> >>> Hi Dave, >>> >>> I did apply Paolo's patch on top of version 5.0.4, the bug is still there. >>> I checked the 5.0.4 changelog and didn't see the fix for this. >> Sorry, the 5.0.4 fix I was referring to was in get_kernel_base(), which is >> called with the result from get_idt_base(). So, just to be clear, when it >> crashes in get_idt_base(), it's because device_find_instance() call returns >> a NULL? > > That's true. > >> static uint64_t >> get_idt_base(struct qemu_device_list *dl) >> { >> struct qemu_device_x86 *dx86 = (struct qemu_device_x86 *) >> device_find_instance (dl, "cpu", 0); >> >> return dx86->idt.base; >> } >> >> So, it seems that with Paolo's patch, it can find the "block" device, but >> then can no longer find the "cpu" device? > > Yes. > >> Can you make a vmlinux/vmcore pair available for me to download? > > Ok, will do later. Hi Dave, Please use the following link to download the vmlinux/vmcore http://dl.dropbox.com/u/4918988/core.dump http://dl.dropbox.com/u/4918988/f12_vmlinux