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

On Mon, Sep 10, 2007 at 11:35:21AM -0700, Randy Dunlap wrote: > 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? > > Hi Randy, Crash should just work. It might broken on latest kernel. Copying it to crash-utility mailing list. Dave will be able to tell us better. > 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). > > Thanks Vivek -- Crash-utility mailing list Crash-utility(a)redhat.com https://www.redhat.com/mailman/listinfo/crash-utility