Building against precise is interesting, at first we thought (ayan and myself)
that
we were modifying the same object twice which results in an error. To remedy
that, sort -u was added to the processing loop. After another precise build
with that precaution we get this failure.
MKDIR
/home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic-dbgsym/usr/lib/debug/lib/firmware/yam
INSTALL
debian/linux-image-3.2.0-26-generic-dbgsym/usr/lib/debug/lib/firmware/yam/1200.bin
INSTALL
debian/linux-image-3.2.0-26-generic-dbgsym/usr/lib/debug/lib/firmware/yam/9600.bin
DEPMOD 3.2.0-26-generic
make[1]: Leaving directory `/home/ppetraki/ubuntu-precise'
# Add .gnu_debuglink sections to each stripped .ko
# pointing to unstripped verson
find /home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic -name
'*.ko' | sed
's|/home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic||'| sort
-u | while read module ; do \
objcopy \
--add-gnu-debuglink=/home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic-dbgsym/usr/lib/debug/$module
\
/home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic/$module; \
done
objcopy:/home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic//lib/modules/3.2.0-26-generic/initrd/sttHRG8l:
cannot fill debug link section
`/home/ppetraki/ubuntu-precise/debian/linux-image-3.2.0-26-generic-dbgsym/usr/lib/debug//lib/modules/3.2.0-26-generic/initrd/vesafb.ko':
No such file or directory
make: *** [install-generic] Error 1
There is no "initrd" dir in the debug symbols tree
on an installed system...
root@ubuntu:~# find /usr/lib/debug -name vesafb.ko
/usr/lib/debug/lib/modules/3.2.0-23-generic/kernel/drivers/video/vesafb.ko
back to the build.
./debian/build/build-generic/drivers/video/vesafb.ko
./debian/linux-image-3.2.0-26-generic-dbgsym/usr/lib/debug/lib/modules/3.2.0-26-generic/kernel/drivers/video/vesafb.ko
./debian/linux-image-3.2.0-26-generic/lib/modules/3.2.0-26-generic/kernel/drivers/video/vesafb.ko
./debian/linux-image-3.2.0-26-generic/lib/modules/3.2.0-26-generic/initrd/vesafb.ko
ppetraki@tangerine:~/ubuntu-precise$ cmp
./debian/linux-image-3.2.0-26-generic/lib/modules/3.2.0-26-generic/kernel/drivers/video/vesafb.ko
./debian/linux-image-3.2.0-26-generic/lib/modules/3.2.0-26-generic/initrd/vesafb.ko
ppetraki@tangerine:~/ubuntu-precise$ echo $?
0
Perhaps we should attempt this sections update earlier in the build? Or we may
have to get smarter
about evaluating our destination arg for --add-gnu-debuglink=${...}.
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https://bugs.launchpad.net/bugs/669641
Title:
systemtap fails to discover installed debug modules
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