XPost: linux.debian.bugs.dist   
   From: carnil@debian.org   
      
   Hi Reinhard,   
      
   On Sun, Jan 25, 2026 at 05:26:22PM +0100, Salvatore Bonaccorso wrote:   
   > Control: tags -1 + upstream   
   > Control: forwarded -1 https://tracker.ceph.com/issues/73886 ht   
   ps://lore.kernel.org/ceph-devel/20260114195524.1025067-2-slava@dubeyko.com/   
   >   
   > Hi Reinhard,   
   >   
   > On Sun, Jan 25, 2026 at 11:22:52AM +0100, Reinhard Eilmsteiner wrote:   
   > > OK, I just restarted   
   > >   
   > > FYI, I have create this script to build kernels:   
   > > #!/bin/bash   
   > >   
   > > cd /home/eilmrein/code/linux-stable   
   > > git checkout $1   
   > > cp /boot/config-$(uname -r) .config   
   > > yes '' | make localmodconfig   
   > > ./scripts/config --module CEPH_FS   
   > > ./scripts/config --module CEPH_LIB   
   > > ./scripts/config --enable CEPH_FSCACHE   
   > > ./scripts/config --enable CEPH_FS_POSIX_ACL   
   > > make savedefconfig   
   > > mv defconfig arch/x86/configs/my_defconfig   
   > > make my_defconfig   
   > > make -j $(nproc) bindeb-pkg   
   > >   
   > > After having run it with v6.12.58 as argument, I installed the resulting   
   > > kernel using   
   > > sudo dpkg -i linux-image-6.12.58_6.12.58-16_amd64.deb   
   > >   
   > > Booted into it and did a quick ls on one of the cephfs, which I have   
   systemd   
   > > automount for me - however it also fails when I try to mount it manually ,   
   I   
   > > get   
   > > natchez➜ codels /remote/vdl/files01   
   > > [1]    2647 killed     ls --color=tty /remote/vdl/files01   
   > >   
   > > , did the requested git bisect bad   
   > >   
   > > and as it is the immediate successor, I now ran this right after making the   
   > > current kernel as bad.   
   > >   
   > > git bisect start   
   > > # status: waiting for both good and bad commits   
   > > # good: [8a243ecde1f6447b8e237f2c1c67c0bb67d16d67] Linux 6.12.57   
   > > git bisect good 8a243ecde1f6447b8e237f2c1c67c0bb67d16d67   
   > > # status: waiting for bad commit, 1 good commit known   
   > > # bad: [567bd8cbc2fe6b28b78864cbbbc41b0d405eb83c] Linux 6.12.63   
   > > git bisect bad 567bd8cbc2fe6b28b78864cbbbc41b0d405eb83c   
   > > # bad: [7475d784169c7df48b0c55525fb862e06674d63c] Linux 6.12.58   
   > > git bisect bad 7475d784169c7df48b0c55525fb862e06674d63c   
   >   
   > This is still not the bisect procedure :).   
   >   
   > The next ommit pointed out by the procedure to bisec would be   
   > 850c7f0537cc5a37ed012592907920637cc548b6 . You need to build with that   
   > commit up a kernel, boot into it, test if ceph mount works or not and   
   > based on the result mark it with 'git bisect bad' or 'git bisect   
   > good'. Git will then calculate you the next commit to test, and you   
   > interate until you get 'the first bad commit' result. We need to have   
   > that (or worst case a range, if you needed to skip one).   
   >   
   > But in meahwhile I have found an upstream repot which matches your   
   > report:   
   >   
   > https://tracker.ceph.com/issues/73886   
   > https://lore.kernel.org/ceph-devel/20260114195524.1025067-2-sl   
   va@dubeyko.com/   
   >   
   > So it would be great if you instead could built the current kernel in   
   > trixie with this patch added on top.   
   >   
   > The procedure for this one is documented in   
   > https://kernel-team.pages.debian.net/kernel-handbook/ch-common   
   tasks.html#id-1.6.6.4   
   > but let me know if you need help with that.   
      
   Let's shortcut that step, I have built *test* packages at   
   https://people.debian.org/~carnil/tmp/linux/1125405-cephfs/ (if you   
   want to trust them, unsigned, but I have put a sha256sum file for   
   those signed with my gpg key in the Debian keyring).   
      
   Please report back if that fixes the problem.   
      
   Regards,   
   Salvatore   
      
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