Your message dated Thu, 10 Jul 2025 17:05:52 +0200 with message-id <[email protected]> and subject line Re: Bug#1109040: Subject: linux-headers-6.1.0-37-amd64 missing config files; cannot build external modules on Bookworm has caused the Debian Bug report #1109040, regarding Subject: linux-headers-6.1.0-37-amd64 missing config files; cannot build external modules on Bookworm to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 1109040: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1109040 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: linux-headers-6.1.0-37-amd64 Version: 6.1.140-1 Severity: serious Hello Debian team, (*First, I wish to apologize for not using the report tool fully. I used it and took the contents of the report from there to complete it, but my SMTP server failed to send the report, so I sent it manually instead. Thank you for understanding. Now to the report.*) I've encountered a serious and reproducible issue with the Debian 12 (Bookworm) kernel headers package that affects the ability to build out-of-tree kernel modules — such as for netfilter hooks or network drivers — using linux-headers-6.1.0-37-amd64. ==================== 📌 Problem Summary ==================== The installed kernel headers appear to be incomplete. While the symbolic link /lib/modules/$(uname -r)/build correctly points to /usr/src/linux-headers-6.1.0-37-amd64, this directory relies on shared contents from /usr/src/linux-headers-6.1.0-37-common, which is missing critical build infrastructure. As a result, any attempt to build a kernel module using the standard external Makefile flow fails or silently produces a broken .ko file that cannot be inserted. ==================== 🧨 Symptoms ==================== - make fails with: /usr/src/linux-headers-6.1.0-37-common/scripts/Makefile.build:44: /usr/src/linux-headers-6.1.0-37-common/scripts/basic/Makefile: No such file or directory - If the build succeeds by falling back to linux-source-6.1, the resulting .ko file throws: insmod: ERROR: could not insert module netherhook.ko: Invalid module format ==================== 🧪 Attempted Fixes ==================== - Tried make olddefconfig / make prepare / make modules_prepare - Verified all header links and paths are correct - Compared with working Kali system (same kernel base, properly functioning headers) ==================== ✅ Workaround ==================== Only way to build modules is to manually extract linux-source-6.1, manually prepare it with kernel config from /boot/, and avoid the headers package altogether. This breaks DKMS, automated toolchains, and all standard workflows relying on headers. ==================== 🔥 Impact ==================== This breaks expected kernel module workflows and contradicts Debian's packaging design, where linux-headers-* should be sufficient to compile out-of-tree modules. ==================== 🛠️ Recommendation ==================== Please verify that linux-headers-6.1.0-37-amd64 and -common contain: - include/config/auto.conf - include/generated/autoconf.h - scripts/basic/Makefile - Proper linker script compatibility (module.lds, etc.) Thanks for your work maintaining Debian — fixing this will restore a vital dev pipeline. Respectfully, Markus Johnsson (NetherTools project) -- System Information: Debian Release: 12.11 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 6.1.0-37-amd64 (SMP w/20 CPU threads; PREEMPT) Kernel taint flags: TAINT_FORCED_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages linux-headers-6.1.0-37-amd64 depends on: ii linux-compiler-gcc-12-x86 6.1.140-1 ii linux-headers-6.1.0-37-common 6.1.140-1 ii linux-kbuild-6.1 6.1.140-1 linux-headers-6.1.0-37-amd64 recommends no packages. linux-headers-6.1.0-37-amd64 suggests no packages. -- no debconf information -- Med vänlig hälsning / Regards Markus Johnsson [image: Mailsuite] Sent with Mailsuite · Unsubscribe <https://mailsuite.com/en/privacy/opt-out/unsubscribe/985906faef70ab81f81ff7118354680df9c8ce4a/7ff7ed2f940556df3e9d972b7e8a056be4e5840a6cfacf8e0902805c3957dc80cc3c7ad454450030eb92295f3d97ebeda4269560379d798671b221f8e727f85a> 07/10/25, 11:20:35 AM
--- End Message ---
--- Begin Message ---This was reported to be user error ("make -C /usr/src/linux-source-6.1 ..." instead of "make -C /lib/modules/$(uname -r)/build ..."). Ben. -- Ben Hutchings Never attribute to conspiracy what can adequately be explained by stupidity.
--- End Message ---
