openSUSE Kernel June 2021

kernel@lists.opensuse.org

11 participants
6 discussions

Why CRYPTO_ECDSA=y?
by Jean Delvare 25 Jun '21

25 Jun '21

Hi Michal, Is there a specific reason why you set CRYPTO_ECDSA=y in the kernel config, instead of making it a module? I think we want do make things modular whenever possible so that the base kernel isn't too heavy to load? Thanks, -- Jean Delvare SUSE L3 Support

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kernel-firmware-20210609-35.1.noarch - kernel says: no suitable firmware found!
by Manfred Hollstein 23 Jun '21

23 Jun '21

Hi there, I'm pretty sure this is a result of the UsrMerge thing. I normally use kernel-default and kernel-firmware from Kernel:stable on all of my systems. While kernel-default-5.12.12-2.1.g43254cf.x86_64 works flawlessly, it fails to locate the firmware files from the latest package kernel-firmware-20210609-35.1.noarch. Here are the symptoms: iwlwifi 0000:06:00.0: Direct firmware load for iwlwifi-3160-17.ucode failed with error -2 iwlwifi 0000:06:00.0: no suitable firmware found! iwlwifi 0000:06:00.0: check git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git i915 0000:00:02.0: Direct firmware load for i915/kbl_dmc_ver1_04.bin failed with error -2 i915 0000:00:02.0: [drm] Failed to load DMC firmware i915/kbl_dmc_ver1_04.bin. Disabling runtime power management. i915 0000:00:02.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git… And indeed, the files used to live at /lib/firmware before, but are now located at /usr/lib/firmware, however dracut does not look there when creating the initrd. This is on Leap 15.3 and 15.2. Shall I put this into Bugzilla? Cheers. l8er manfred

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Getting the kernel out of /boot
by Ludwig Nussel 22 Jun '21

22 Jun '21

Hi, One of the motivations for UsrMerge is to have all read-only parts of the operating system in /usr. The kernel packages install files in /boot though which isn't in line with that idea. Looking at Fedora they install files like vmlinuz that used to be named /boot/$name-$kver as (/usr)/lib/modules/$kver/$name instead. They include /boot/$name-$kver as %ghost. Since all necessary information is passed to /usr/lib/bootloader/bootloader_entry in %post, that script could create links or copies in /boot if needed. Does anyone have a better idea or can we just follow Fedora's approach here? cu Ludwig -- (o_ Ludwig Nussel //\ V_/_ http://www.suse.com/ SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer HRB 36809 (AG Nürnberg)

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Request for low latency kernel CONFIG_HZ at 1000 Hz
by Thomas Hartwig 16 Jun '21

16 Jun '21

I am wondering if there is any kernel available by default which offers kernel interrupt timer (CONFIG_HZ) at 1000 Hz. I checked preempt in 15.2 but there it is 250 Hz. Why this is kept at 250 Hz there? My use case is very special: my environment is dealing with high speed cameras and the low frequency is needed to be able to manage high frame speed at several thousand frames per second. Right now I am using a special desktop kernel from a foreign source however I am wondering if there is any chance to have this into mainline LEAP distro available? I know my use case is very special and I should be able to maintain my own kernel for this, however I am wondering if this would be a nice benefit of the LEAP distribution in general and why the preempt kernel is kept at lower frequency still... Thanks Thomas

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Re: Pluggable SATA disk not detected on recent kernels
by Manfred Hollstein 14 Jun '21

14 Jun '21

Hi there, On Sun, 13 Jun 2021, 13:26:48 +0200, Manfred Hollstein wrote: > Hi there, > > I'm not sure when it started, but noticed it around 5.12.9 - have to > admit though, that I was probably very lazy when doing backups during > the last months... Anyway, when plugging a SATA disk into some disk > tray, the kernel doesn't detect a new device. This used to work > perfectly some months before, and it actually still does on Leap's > default kernel (both 15.2 and 15.3). The following kernels both show > this bug: > > kernel-default-5.12.10-2.1.gb92eaf7.x86_64 > kernel-vanilla-5.12.10-2.1.gb92eaf7.x86_64 > > <https://bugzilla.opensuse.org/show_bug.cgi?id=1187252> strange thing, really! Just found the culprit: somehow the "Hot Plug" bit for the SATA port connected to the tray box got disabled in the BIOS. Really don't know how this could have happened, but I guess it must have been during a BIOS update as the misbehaviour could be reproduced on two otherwise identical systems. Cheers. l8er manfred

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KMP builds fail with current factory kernels
by Hans-Peter Jansen 06 Jun '21

06 Jun '21

[Just FYI: https://bugzilla.suse.com/show_bug.cgi?id=1186900] Hi, some changes to the packaging infra not too long ago result in failed builds of certain kernel module packages, eg: https://build.opensuse.org/package/live_build_log/security:forensics/lime-k… Here's a typical failing sequence: [ 45s] + for flavor in default [ 45s] + cp -a src obj-default [ 45s] + pushd obj-default [ 45s] ~/rpmbuild/BUILD/lime-1.9+git.20200809T155235.fa37b69/obj-default ~/rpmbuild/BUILD/lime-1.9+git.20200809T155235.fa37b69 [ 45s] ++ make -si -C /usr/src/linux-obj/x86_64/default ARCH=x86 kernelrelease [ 46s] + kver=5.12.9-1-default [ 46s] + make -j4 KVER=5.12.9-1-default KDIR=/usr/src/linux-obj/x86_64/default modules [ 46s] make -C /lib/modules/5.12.9-1-default/build M="/home/abuild/rpmbuild/BUILD/lime-1.9+git.20200809T155235.fa37b69/obj-default" modules [ 46s] make[1]: *** /lib/modules/5.12.9-1-default/build: No such file or directory. Stop. The reason is some wrong (packaged) symlinks in the kernel-$flavor-devel package. After co/building the package, chroot into the build env_ abuild@xrated:~> cd /lib/modules/5.12.9-1-default/ abuild@host:/lib/modules/5.12.9-1-default> l total 0 drwxr-xr-x 2 root root 33 Jun 5 16:01 ./ drwxr-xr-x 3 root root 30 Jun 5 16:01 ../ lrwxrwxrwx 1 root root 50 Jun 3 23:57 build -> ../../../usr/src/linux-5.12.9-1-obj/x86_64/default lrwxrwxrwx 1 root root 31 Jun 3 23:57 source -> ../../../usr/src/linux-5.12.9-1 abuild@xrated:/lib/modules/5.12.9-1-default> abuild@xrated:/lib/modules/5.12.9-1-default> l ../../.. total 68 drwxr-xr-x 14 root root 169 Jun 5 16:01 ./ drwxr-xr-x 21 root root 4096 Jun 5 16:01 ../ drwxr-xr-x 3 root root 21 Jun 5 16:01 X11R6/ dr-xr-xr-x 2 root root 12288 Jun 5 16:01 bin/ drwxr-xr-x 8 root root 175 Jun 5 16:01 etc/ dr-xr-xr-x 34 root root 8192 Jun 5 16:01 include/ dr-xr-xr-x 24 root root 4096 Jun 5 16:01 lib/ dr-xr-xr-x 18 root root 16384 Jun 5 16:01 lib64/ drwxr-xr-x 9 root root 136 Jun 5 16:01 libexec/ drwxr-xr-x 11 root root 118 May 25 07:58 local/ dr-xr-xr-x 2 root root 4096 Jun 5 16:01 sbin/ dr-xr-xr-x 43 root root 4096 Jun 5 16:01 share/ drwxr-xr-x 6 root root 100 Jun 5 16:01 src/ drwxr-xr-x 5 root root 43 May 25 07:58 x86_64-suse-linux/ The build and source symlinks either miss another ../ or usr/ needs to go. Best regards, Pete

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openSUSE Kernel June 2021