[Crash-utility] Re: [PATCH 0/2] vmcoreinfo support for dump filtering #2

On Fri, 7 Sep 2007 17:57:46 +0900 Ken'ichi Ohmichi wrote: > Hi, > I released a new makedumpfile (version 1.2.0) with vmcoreinfo support. > I updated the patches for linux and kexec-tools. > > PATCH SET: > [1/2] [linux-2.6.22] Add vmcoreinfo > The patch is for linux-2.6.22. > The patch adds the vmcoreinfo data. Its address and size are output > to /sys/kernel/vmcoreinfo. > > [2/2] [kexec-tools] Pass vmcoreinfo's address and size > The patch is for kexec-tools-testing-20070330. > (http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/) > kexec command gets the address and size of the vmcoreinfo data from > /sys/kernel/vmcoreinfo, and passes them to the second kernel through > ELF header of /proc/vmcore. When the second kernel is booting, the > kernel gets them from the ELF header and creates vmcoreinfo's PT_NOTE > segment into /proc/vmcore. Hi, When using the vmcoreinfo patches, what tool(s) are available for analyzing the vmcore (dump) file? E.g., lkcd or crash or just gdb? gdb works for me, but I tried to use crash (4.0-4.6 from http://people.redhat.com/anderson/) and crash complained: crash: invalid kernel virtual address: 0 type: "cpu_pda entry" Should crash work, or does it need to be modified?

This is on a 2.6.23-rc3 kernel with vmcoreinfo patches and a dump file with -l 31 (dump level 31, omitting all possible pages).