Lmst

Sudo update-grub command not found on Ubuntu 25.04 full-disk, tpm-backed encrypted installation #kernel #encryption #tpm #2504

https://askubuntu.com/q/1547034/612

New Version: #Linux #Kernel 6.12.26 (longterm;All) https://www.kernel.org/

New Version: #Linux #Kernel 6.14.5 (stable;All) https://www.kernel.org/

🐧🐝 Learn essential eBPF #Linux command line tools to improve your service observability with #opensource: https://t.ly/wNy6b

Check out #Coroot (we’re #FOSS!) to turn manual service analysis into instant root cause insights. Resolve issues and deploy faster with #eBPF: https://n9.cl/kfm0rw

#BPFtrace #BPF #kernel #freesoftware #FLOSS #SRE #DevOps #Coroot #tech #IT #kubernetes

Please boost!

I have a question for all of you Linux experts out there :

Is there a relationship between a tickless kernel (CONFIG_NO_HZ_IDLE or CONFIG_NO_HZ_FULL in the kernel config), & the RTC interrupt frequency, or do they do two different things?

In other words, if your kernel is running tickless, is there any audio latency benefit from increasing the highest requested RTC interrupt frequency—or, is it no longer relevant?

#Linux #LinuxAudio #Fedora #Debian #Ubuntu #Arch #Kernel #Audio

Screen turns black (but backlit) while image isn't being updated #kernel #graphics #display #intelgraphics #screen

https://askubuntu.com/q/1546927/612

#Ubuntu 22.04.5 で #kernel の #update 。

GNU/Linux 5.15.0-139-generic
CVE-2023-52664, CVE-2023-52927 へのセキュリティ対応。
linux-headers-5.15.0-139
linux-headers-5.15.0-139-generic
linux-image-5.15.0-139-generic
linux-modules-5.15.0-139-generic
linux-modules-extra-5.15.0-139-generic

セキュリティ対応なのでお早めに。
再起動必要。

#prattohome #更新

I've done a series that adds support for AF_UNIX sockets in coredumps. Userspace provides an AF_UNIX socket path via core_pattern and the kernel connects to it, shuts down the read side and writes the coredump to the socket.

This means no more super privileged usermode helper upcalls and makes for a very nice API experience. I captured coredumps simply via socat:

https://lore.kernel.org/20250430-work-coredump-socket-v1-0-2faf027dbb47@kernel.org

The receiver can use SO_PEERPIDFD to get a stable handle on the crashed process.

#kernel #linux #coredump

/* Avoid certain doom if a shootdown already occurred; re-registering the NMI handler will cause list corruption, modifying the callback will do who knows what, etc… */

https://elixir.bootlin.com/linux/v6.14.4/source/arch/x86/kernel/reboot.c#L915-L919

#linux #kernel #x86

nvidia "GPU has fallen off the bus" after upgrade to 25.04 #drivers #nvidia #kernel #graphics #2504

https://askubuntu.com/q/1546891/612

I want to build my kernels with clang but I keep forgetting to add LLVM=1 to my make command line. What do?

`alias buildkernel='make -j$(nproc) LLVM=1'`

I guess. (But now I need to remember to use buildkernel instead of make...)

#kernel

#Linux #Kernel Exploitation CVE-2025-21756: Attack of the #Vsock https://hoefler.dev/articles/vsock.html

🎉🚀 Behold! Another riveting tale of a self-proclaimed cyber genius who "accidentally" discovered a #kernel #exploit while procrastinating on their homework. 🧠💻 Brace yourself for the epic #saga of setting up the world's most "complex" #debugging environment, which was clearly the real villain all along. 🙄🔧
https://hoefler.dev/articles/vsock.html #cybersecurity #procrastination #HackerNews #ngated

Call for Testing: Parallel fault handler https://www.undeadly.org/cgi?action=article;sid=20250430184440 #openbsd #faulthandler #multicore #development #kernel #freesoftware #libresoftware

Researchers found automatically tuning parameters can improve memory tieirng performance by 2x, using DAMON and SK hynix' DAMON-based memory tiering solution as a part of the research.

https://arxiv.org/pdf/2504.18714

#linux #kernel #damon

really great blog on what the technical parts of my maintainer job are all about

https://blog.ceejbot.com/posts/programming-as-theory-building/

#kernel

As much as I like @fedora must admit no major version upgrade comes smooth :ablobcatcry:

This time, upgrading to Fedora v42 has weirdest issue on bootup when it asks for LUKS decryption phrase: it asks once, then attempts to boot, and then asks again, however, neither laptop nor external keyboard inputs anything.

So I loaded Kernel of Fedora v41 (all smooth with it) and when booted reinstalled Kernel:

sudo dnf reinstall kernel\*

Interestingly, it helped - after choosing 6.14.4-300.fc42.x86_64 Kernel, it asked for LUKS passphrase input, accepted it, then briefly flashed again (oh no, I thought!), but dialog disappeared and session manager loaded up.

There is always so much stress when upgrading :fedora: major version... :blobcatfearful:

#fedora #fedora42 #linux #linuxadmin #luks #kernel #keyboard #issue