Hi Ravi, On Tue, 2016-02-16 at 21:51 +0530, Ravi Bangoria wrote: > Elfutils, looking for kernel debuginfo file, tries to find it at > various places. If elfutils finds /boot/vmlinu*x* file, it checks > for debufginfo section. If debuginfo is not present, it saves it as > 'main elf' and continue looking for debuginfo file having .debug > extension i.e. vmlinux-RELEASE.debug. > > 'Ubuntu on powerpc' installs kernel as /boot/vmlinux and installs > debuginfo without any extension as /usr/lib/debug/boot/vmlinux-RELEASE > and hence, elfutils is not able to find the debuginfo file. > > Here is the lunchpad bug for the same: > https://bugs.launchpad.net/ubuntu/+source/systemtap/+bug/1537125 > > This patch adds functionality to search for file without any extension > followed by searching file having .debug extension.
Thanks for the analysis. I do have a question though. The reason we are looking for the vmlinux-3.13.0-76-generic.debug filename instead of the plain vmlinux-3.13.0-76-generic filename seems to be because /boot/vmlinux contains a .gnu_debuginfo link with the name of the debug file. But that name doesn't match? What does eu-readelf --strings=.gnu_debuglink /boot/vmlinux* say? Would it make sense to not put in the "correct" (without .debug suffix) debugfile name in .gnu_debuglink or completely leaving .gnu_debuginfo out (or is nothing found then?) Thanks, Mark
