[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] crash can't analyze memory dumpfile of Xen
I used the following tools to debug Xen. xen-3.3-unstable(changeset 17917) kexec-tools 2.0.0 makedumpfile-1.2.8 crash 4.0-6.3 Extraction of the memory dumpfile was completed normally. And I executed the following command to analyze memory dumpfile of Xen. # crash /boot/xen-syms-3.3-unstable dumpfile.core The following errors occurred. ------------------------------------------- crash: invalid kernel virtual address:0 type:"note_buf_t or crash_note_t" WARNING: cannot fill note core. crash: cannot read elf note core. ------------------------------------------- I would like to ask some comments why these errors occurred. I did the following steps: 1.Boot Xen with the following Dom0 option. "crashkernel=128M@64M" And 2nd kernel is loaded by kexec. 2.On Dom0 Linux, carry out crash dump. # echo c > /sys/sysrq-trigger 3.On 2nd kernel, extract memory dumpfile. # makedumpfile -E -X /proc/vmcore dumpfile.core 4.Reboot Xen and execute the following command. And the above errors occurred. # crash /boot/xen-syms-3.3-unstable dumpfile.core I can read the same memory dumpfile by crash command with no error to debug vmlinux. Thanks, -- Yuji Shimada _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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