@hws @michael.holzheu @schwidefsky It seems like schwidefsky updated s390 config upstream in v4.12 to remove -CONFIG_DEBUG_FS=y for the zfcpdump_defconfig. Meaning any Linux on Z systems using v4.12+ default zfcpdump_defconfig from upstream linux source tree will get a bad configuration. It seems counter productive to ask all downstreams to patch for this config issue.
Are you going to get in touch with schwidefsky to re-introduce CONFIG_DEBUG_FS=y in the zfcpdump_defconfig and get it applied in the stable trees too? Also, i believe zfcpdump-kernel that we currently ship does have debugfs enabled. Are you using zfcpdump-kernel as provided in ubuntu? But we will note and will explicitely enable CONFIG_DEBUG_FS=y when we refress zfcpdump-kernel with v4.13+. Regards, Dimitri. ** Changed in: zfcpdump-kernel (Ubuntu Artful) Status: Triaged => Incomplete ** Changed in: linux (Ubuntu Artful) Status: Triaged => Incomplete ** Changed in: ubuntu-z-systems Status: Triaged => Incomplete ** No longer affects: zfcpdump-kernel (Ubuntu Artful) ** No longer affects: linux (Ubuntu Artful) ** Also affects: linux-hwe (Ubuntu) Importance: Undecided Status: New ** Changed in: linux-hwe (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1719290 Title: CONFIG_DEBUG_FS is not enabled by "make zfcpdump_defconfig" with Ubuntu 17.10 (kernel 4.13) Status in Ubuntu on IBM z Systems: Incomplete Status in linux package in Ubuntu: Incomplete Status in linux-hwe package in Ubuntu: Incomplete Status in zfcpdump-kernel package in Ubuntu: Incomplete Bug description: Ubuntu 17.10 uses kernel 4.13. We just found out that on this kernel version CONFIG_DEBUG_FS is not enabled by "make zfcpdump_defconfig". This makes zfcpdump fail with the following error message: ERROR: Unable to mount debugfs No such file or directory Patch solving this problem is attached As reference following bugzilla As reference h IBM bugzilla for enabling zfcpdump: https://bugzilla.linux.ibm.com/show_bug.cgi?id=139974 or Launchpad https://bugs.launchpad.net/ubuntu/+source/s390-tools/+bug/1565841 == Comment: #1 - Heinz-Werner Seeck <heinz-werner_se...@de.ibm.com> - 2017-09-25 06:00:23 == To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1719290/+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