Bug#1069092: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares
Hi, Looks like this fixed the problem. I ran a couple of backup jobs to cifs-mounted shares and no error messages so far. Thanks! Regards, Kari From: Salvatore Bonaccorso on behalf of Salvatore Bonaccorso Date: Tuesday, 7. May 2024 at 19.01 To: Kari Lempiäinen Cc: 1069...@bugs.debian.org <1069...@bugs.debian.org>, Manfred Larcher , 1069...@bugs.debian.org <1069...@bugs.debian.org> Subject: Re: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares Hi, On Tue, May 07, 2024 at 03:30:58PM +, Kari Lempiäinen wrote: > Hi, > > New kernel 6.1.0-21 seems to be out. Could you verify if this bus is fixed in > it? > > I found from > https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.90 that > there is a commit b3686200adba26dd1f8beee3d9c1b34563db1e65 is that a fix for > this? I closed the bug in the changelog with it, with the testing case I had at hand. But please verify if that is the case as well in your setup. Can you then report back? Regards, Salvatore
Bug#1069092: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares
Hi, New kernel 6.1.0-21 seems to be out. Could you verify if this bus is fixed in it? I found from https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.90 that there is a commit b3686200adba26dd1f8beee3d9c1b34563db1e65 is that a fix for this? Regards, Kari From: Salvatore Bonaccorso on behalf of Salvatore Bonaccorso Date: Thursday, 18. April 2024 at 9.39 To: Kari Lempiäinen Cc: 1069...@bugs.debian.org <1069...@bugs.debian.org>, Manfred Larcher , 1069...@bugs.debian.org <1069...@bugs.debian.org> Subject: Re: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares Hi Kari, On Thu, Apr 18, 2024 at 05:31:33AM +, Kari Lempiäinen wrote: > Hi, > > I think I spoke too soon. I removed 'noserverino' options from all > my cifs mounts yesterday and u/remounted them. From last night > syslog I can still find the "directory entry name would overflow > frame end of buf" entries. > > I have options like this in my fstab: > //mercury/backups/mnt/backups cifs > credentials=/etc/smbcredentials,uid=kari,gid=kari,_netdev,dir_mode=0775,file_mode=0775,noperm,vers=3.0 > 0 0 Thanks for reporting back! So it might be possible that the noserverino just makes the issue easier visible. If I would provide you a (unsigned!) kernel-image package with a tentative patch from upstream, asking for testing, could you boot one affected machine into it to verify if the problem is solved? Regards, Salvatore
Bug#1069092: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares
Hi, I probably could try it. The problem is that I don't have extra computer at the moment and I should do it on my main server. There is also a Virtualbox host running there, which needs to compile some parts of it every time the host kernel is updated. For that it needs kernel-headers. I assume that the fix you're talking about wouldn't affect Virtualbox itself, but if the kernel headers version differs from the "test" kernel, then Virtualbox won't start. If you can make "test" kernel so it matches my headers: ii linux-headers-6.1.0-20-amd64 6.1.85-1 amd64Header files for Linux 6.1.0-20-amd64 ii linux-headers-6.1.0-20-common 6.1.85-1 all Common header files for Linux 6.1.0-20 ii linux-headers-amd64 6.1.85-1 amd64Header files for Linux amd64 configuration (meta-package) I think I could probably try it. Also instructions to revert back is necessary 😉 Regards, Kari From: Salvatore Bonaccorso on behalf of Salvatore Bonaccorso Sent: 18 April 2024 09:39 To: Kari Lempiäinen Cc: 1069...@bugs.debian.org <1069...@bugs.debian.org>; Manfred Larcher ; 1069...@bugs.debian.org <1069...@bugs.debian.org> Subject: Re: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares Hi Kari, On Thu, Apr 18, 2024 at 05:31:33AM +, Kari Lempiäinen wrote: > Hi, > > I think I spoke too soon. I removed 'noserverino' options from all > my cifs mounts yesterday and u/remounted them. From last night > syslog I can still find the "directory entry name would overflow > frame end of buf" entries. > > I have options like this in my fstab: > //mercury/backups/mnt/backups cifs > credentials=/etc/smbcredentials,uid=kari,gid=kari,_netdev,dir_mode=0775,file_mode=0775,noperm,vers=3.0 > 0 0 Thanks for reporting back! So it might be possible that the noserverino just makes the issue easier visible. If I would provide you a (unsigned!) kernel-image package with a tentative patch from upstream, asking for testing, could you boot one affected machine into it to verify if the problem is solved? Regards, Salvatore
Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares
Hi, I think I spoke too soon. I removed 'noserverino' options from all my cifs mounts yesterday and u/remounted them. From last night syslog I can still find the "directory entry name would overflow frame end of buf" entries. I have options like this in my fstab: //mercury/backups/mnt/backups cifs credentials=/etc/smbcredentials,uid=kari,gid=kari,_netdev,dir_mode=0775,file_mode=0775,noperm,vers=3.0 0 0 Regards, Kari ____ From: Kari Lempiäinen Sent: 17 April 2024 14:29 To: Salvatore Bonaccorso ; 1069...@bugs.debian.org <1069...@bugs.debian.org> Cc: Manfred Larcher ; 1069...@bugs.debian.org <1069...@bugs.debian.org>; sub...@bugs.debian.org Subject: Re: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares Hi, I can confirm that removing the 'noserverino' mount option fixed the problem for me. Unfortunately, I don't have suitable environment at the moment for testing kernel-fixes... Best regads, Kari From: Salvatore Bonaccorso Sent: 16 April 2024 23:49 To: 1069...@bugs.debian.org <1069...@bugs.debian.org> Cc: Manfred Larcher ; 1069...@bugs.debian.org <1069...@bugs.debian.org>; Kari Lempiäinen ; sub...@bugs.debian.org Subject: Re: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares Hi, On Tue, Apr 16, 2024 at 05:46:33PM +0200, Salvatore Bonaccorso wrote: > Control: tags -1 + moreinfo > > Hi > > > On Tue, Apr 16, 2024 at 02:17:49PM +0200, Manfred Larcher wrote: > > Package: src:linux > > Version: 6.1.85-1 > > Severity: important > > > > Dear Maintainer, > > > >* What led up to the situation? > > kernel update from version 6.1.0-18 to 6.1.0-20 > > > >* What exactly did you do (or not do) that was effective (or > > ineffective)? > > out system mounted a samba share via autofs (cifs) and we tried to access > > some files and directories > > > >* What was the outcome of this action? > > the mount point of our share is /srv/samba/shares/company and the directory > > it/MIJ had another directory "digitale kommunikation" which did not shop up > > on the computer which mounted the samba share. before the kernel update it > > did and when we renamed the file to "digitale_kommunikation" or to "digitalo > > kommunikation" we could see it. > > in the syslog we found the following messages: > > CIFS: VFS: directory entry name would overflow frame end of buf ... > > we could move that direcotry into another directory and it was useable, we > > created another directory it/abc and created the "digitale kommunikation" > > inside and it was hidden again. after switching back to kernel 6.1.0-20 > > everything was ok. > > upgrade to kernel 6.5.0-0.deb12.4-amd64 package was ok too. > > > >* What outcome did you expect instead? > > we expected to just see the "digitale kommunikation" directory as before. > > Can you share details on how the cifs mounts are done? Which mount > options are used? > > Were you able to find a minimal reproducing case which would help > debug the issue on non production systems? Can you confirm you are seeing the issue only if mounting with using 'noserverino' mount option? Would you be in the position of building a kernel with a commit reverted and verify the issue is gone with it? If you follow https://kernel-team.pages.debian.net/kernel-handbook/ch-common-tasks.html#id-1.6.6.4 with the attached patch, you should be able to get a kernel image to test with. Regards, Salvatore
Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares
Hi, I can confirm that removing the 'noserverino' mount option fixed the problem for me. Unfortunately, I don't have suitable environment at the moment for testing kernel-fixes... Best regads, Kari From: Salvatore Bonaccorso Sent: 16 April 2024 23:49 To: 1069...@bugs.debian.org <1069...@bugs.debian.org> Cc: Manfred Larcher ; 1069...@bugs.debian.org <1069...@bugs.debian.org>; Kari Lempiäinen ; sub...@bugs.debian.org Subject: Re: Bug#1069102: linux-image-6.1.0-20-amd64 and cifs mount problem on some folders which get hidden on shares Hi, On Tue, Apr 16, 2024 at 05:46:33PM +0200, Salvatore Bonaccorso wrote: > Control: tags -1 + moreinfo > > Hi > > > On Tue, Apr 16, 2024 at 02:17:49PM +0200, Manfred Larcher wrote: > > Package: src:linux > > Version: 6.1.85-1 > > Severity: important > > > > Dear Maintainer, > > > >* What led up to the situation? > > kernel update from version 6.1.0-18 to 6.1.0-20 > > > >* What exactly did you do (or not do) that was effective (or > > ineffective)? > > out system mounted a samba share via autofs (cifs) and we tried to access > > some files and directories > > > >* What was the outcome of this action? > > the mount point of our share is /srv/samba/shares/company and the directory > > it/MIJ had another directory "digitale kommunikation" which did not shop up > > on the computer which mounted the samba share. before the kernel update it > > did and when we renamed the file to "digitale_kommunikation" or to "digitalo > > kommunikation" we could see it. > > in the syslog we found the following messages: > > CIFS: VFS: directory entry name would overflow frame end of buf ... > > we could move that direcotry into another directory and it was useable, we > > created another directory it/abc and created the "digitale kommunikation" > > inside and it was hidden again. after switching back to kernel 6.1.0-20 > > everything was ok. > > upgrade to kernel 6.5.0-0.deb12.4-amd64 package was ok too. > > > >* What outcome did you expect instead? > > we expected to just see the "digitale kommunikation" directory as before. > > Can you share details on how the cifs mounts are done? Which mount > options are used? > > Were you able to find a minimal reproducing case which would help > debug the issue on non production systems? Can you confirm you are seeing the issue only if mounting with using 'noserverino' mount option? Would you be in the position of building a kernel with a commit reverted and verify the issue is gone with it? If you follow https://kernel-team.pages.debian.net/kernel-handbook/ch-common-tasks.html#id-1.6.6.4 with the attached patch, you should be able to get a kernel image to test with. Regards, Salvatore
Bug#1069092: Kernel 6.1.85-1 breaking CIFS mounts?
Package: linux-image-amd64 Version: 6.1.85-1 After updating to the latest kernel 6.1.85-1 I started getting messages like this in the syslog: kernel: [47578.266579] CIFS: VFS: directory entry name would overflow frame end of buf 3012d263 I have several CIFS file shares mounted from my Synology NAS and I noticed that some of the directories are not visible on my Debian server. For example if I rescan my music library which resides on the NAS, I get hundreds of similar messages on syslog. There is not much information on the internet about this, but I found this https://forums.unraid.net/bug-reports/stable-releases/6129-cifs-vfs-directory-entry-name-would-overflow-frame-end-of-buf-r2916/ Looks like unraid did a rollback on their kernel because of this. Is this somehow connected to this: https://lore.kernel.org/all/20240123002814.1396804-45-keesc...@chromium.org/
