Public bug reported:
The vdso* files are built into the kernel for loading into userspace
binaries to accelerate various kernel-related operations. These files
do not need to be packaged & installed for the system to operate, and
indeed they aren't part of the linux-image* deb's in Ubuntu. However,
tools such as systemtap (and possibly perf and oprofile;
https://bugs.launchpad.net/ubuntu/+source/oprofile/+bug/295975) need
them, in order to unwind user-space stacks.
In Fedora, these vdso.so's are installed with:
[...]
%{make} -s ARCH=$Arch INSTALL_MOD_PATH=$RPM_BUILD_ROOT vdso_install
KERNELRELEASE=$KernelVer
[...]
so they show up under /usr/lib/modules/`uname -r`/vdso/.
Please make the change to have the linux-image deb preserve & ship these
.so's in the same location.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1325713
Title:
need vdso*.so images installed under /lib/modules for systemtap etc.
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