Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: dkms (Ubuntu) Status: New => Confirmed
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to dkms in Ubuntu. https://bugs.launchpad.net/bugs/1608499 Title: Parallel depmod failure with dkms autoinstall Status in dkms package in Ubuntu: Confirmed Bug description: Description of problem ---------------------- "dkms autoinstall" installs DKMS modules in parallel, potentially executing several depmod instances in parallel. The resulting race condition causes depmod to fail and dkms install as well. This problem is critical because some DKMS modules can be left in "built" state after a kernel upgrade, thus the kernel modules will not be re-installed in /lib/modules/. Ubuntu release -------------- # lsb_release -rd Description: Ubuntu 16.04 LTS Release: 16.04 DKMS package version -------------------- # apt-cache policy dkms dkms: Installed: 2.2.0.3-2ubuntu11 Candidate: 2.2.0.3-2ubuntu11 Version table: *** 2.2.0.3-2ubuntu11 500 500 http://fr.archive.ubuntu.com/ubuntu xenial/main amd64 Packages 500 http://fr.archive.ubuntu.com/ubuntu xenial/main i386 Packages 100 /var/lib/dpkg/status Steps to reproduce ------------------ Add 2 simple DKMS modules, mod1 and mod2 (test case in attachment) with "dkms add", then run "dkms autoinstall". # dkms add mod1 ; dkms add mod2 Creating symlink /var/lib/dkms/mod1/1.0/source -> /usr/src/mod1-1.0 DKMS: add completed. Creating symlink /var/lib/dkms/mod2/1.0/source -> /usr/src/mod2-1.0 DKMS: add completed. # dkms autoinstall Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area... Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area.... .make KERNELRELEASE=4.4.0-28-generic -C /lib/modules/4.4.0-28-generic/build SUBDIRS=/var/lib/dkms/mod2/1.0/build S=/var/lib/dkms/mod2/1.0/build modules... make KERNELRELEASE=4.4.0-28-generic -C /lib/modules/4.4.0-28-generic/build SUBDIRS=/var/lib/dkms/mod1/1.0/build S=/var/lib/dkms/mod1/1.0/build modules..... cleaning build area...cleaning build area..... DKMS: build completed. DKMS: build completed. mod2.ko: Running module version sanity check. mod1.ko: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/4.4.0-28-generic/updates/dkms/ - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/4.4.0-28-generic/updates/dkms/ depmod...depmod.......(bad exit status: 1) -------- Uninstall Beginning -------- Module: mod2 Version: 1.0 Kernel: 4.4.0-28-generic (x86_64) ------------------------------------- DKMS: install completed. Status: Before uninstall, this module version was ACTIVE on this kernel. mod2.ko: - Uninstallation - Deleting from: /lib/modules/4.4.0-28-generic/updates/dkms/ - Original module - No original module was found for this module on this kernel. - Use the dkms install command to reinstall any previous module version. depmod.... DKMS: uninstall completed. Error! Problems with depmod detected. Automatically uninstalling this module. DKMS: Install Failed (depmod problems). Module rolled back to built state. root@ubuntu1604:~/dkms-depmod# dkms status mod1, 1.0, 4.4.0-28-generic, x86_64: installed mod2, 1.0, 4.4.0-28-generic, x86_64: built => mod2 should be in "installed" state as well. # modinfo mod1 filename: /lib/modules/4.4.0-28-generic/updates/dkms/mod1.ko author: 6WIND license: GPL srcversion: 8D30BAE7A8F4D38F20AEB57 depends: vermagic: 4.4.0-28-generic SMP mod_unload modversions # modinfo mod2 modinfo: ERROR: Module mod2 not found. Solution -------- The problem is fixed in dkms official repository by commit https://github.com/dell-oss/dkms/commit/00114cbc0a1f8c0aa5143808205d1a7cc9e58d3b (also in attachment). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dkms/+bug/1608499/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp