Public bug reported: I was validating https://bugs.launchpad.net/ubuntu/+source/rtl8812au/+bug/1960169 in a focal chroot on an impish host.
despite only having v5.15 kernel in a chroot, the dkms module was attempted to be built against the host kernel, which failed. dkms modules should respect the kernel version dkms is asking the module to built against. Setting up rtl8812au-dkms (4.3.8.12175.20140902+dfsg-0ubuntu13~20.04.4) ... Loading new rtl8812au-4.3.8.12175.20140902+dfsg DKMS files... It is likely that 5.13.0-40-generic belongs to a chroot's host Building for 5.15.0-25-generic Building initial module for 5.15.0-25-generic ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/rtl8812au-dkms.0.crash' Error! Bad return status for module build on kernel: 5.15.0-25-generic (x86_64) Consult /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/make.log for more informati on. dpkg: error processing package rtl8812au-dkms (--configure): installed rtl8812au-dkms package post-installation script subprocess returned error exit s tatus 10 dmesg: read kernel buffer failed: Operation not permitted Errors were encountered while proc essing: rtl8812au-dkms E: Sub-process /usr/bin/dpkg returned an error code (1) root@normal-snake:~# cat /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/make.log DKMS make.log for rtl8812au-4.3.8.12175.20140902+dfsg for kernel 5.15.0-25-generic (x86_64) Wed Apr 27 15:22:31 UTC 2022 make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/5.13.0-40-generic/build M=/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build modules make[1]: *** /lib/modules/5.13.0-40-generic/build: No such file or directory. Stop. make: *** [Makefile:1457: modules] Error 2 Note how make file is inconsistent with the dkms output. ** Affects: rtl8812au (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970635 Title: dkms module is built against host kernel, when asking to build against a chroot kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rtl8812au/+bug/1970635/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs