Hi everyone, Reading:
https://lore.kernel.org/lkml/20240206161111.454699-1-kova...@altlinux.org/T/ It seems the issue was introduced in commit 33eae65c6f49770fec7a662935d4eb4a6406d24b Author: Paulo Alcantara <p...@manguebit.com> Date: Wed Dec 13 12:25:57 2023 -0300 Subject: smb: client: fix OOB in SMB2_query_info_init() Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=33eae65c6f49770fec7a662935d4eb4a6406d24b this was indeed landed in 5.15.0-102-generic: $ git log --grep "smb: client: fix OOB in SMB2_query_info_init()" origin/master-next commit ed30eac9715d0bd5512ee42ca8e8f340d2d9d2d5 ... $ git describe --contains ed30eac9715d0bd5512ee42ca8e8f340d2d9d2d5 Ubuntu-5.15.0-102.112~472 The link mentions it is supposedly fixed in: commit b5d623611c9cda84ebb5e5bd044587955eaf782f Author: Kees Cook <keesc...@chromium.org> Date: Fri Feb 17 16:24:40 2023 -0800 Subject: smb3: Replace smb2pdu 1-element arrays with flex-arrays Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b5d623611c9cda84ebb5e5bd044587955eaf782f Looking at the Jammy kernel tree: $ git log --grep "smb3: Replace smb2pdu 1-element arrays with flex-arrays" origin/master-next commit b5d623611c9cda84ebb5e5bd044587955eaf782f $ git describe --contains b5d623611c9cda84ebb5e5bd044587955eaf782f Ubuntu-5.15.0-104.114~23 It seems it is already applied and tagged in 5.15.0-104-generic. This seems to be built, but not quite in -proposed yet: https://kernel.ubuntu.com/reports/kernel-stable-board/ I will write back as soon as 5.15.0-104-generic is in -proposed, with instructions on how to test it, and see if it fixes the issue. Thanks, Matthew -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2060780 Title: CIFS stopped working/is unstable with kernel update to 5.15.0-102.112 Status in linux package in Ubuntu: Confirmed Status in linux source package in Jammy: Fix Committed Bug description: Hi, updated some Ubuntu 22.04 systems to lastest available state this morning, which caused CIFS mounts (from various fileservers) to stop working. Kernel was updated to version 5.15.0-102-generic. I can mount the shares without problems (mount -t cifs), but then, df for example tells me: df: /mnt: Resource temporarily unavailable. I'm able to list and browse all the files, but accessing them (even readonly) is very unstable. Sometimes it works and sometimes it just gives me i/o errors. Switching back to 5.15.0-101-generic or 5.15.0-100-generic solves the problem and everything works again as expected. Seems like some bug has been implemented in 5.15.0-102-generic... To reproduce the problem, I started a while loop on one server to write to some file on a specific mounted CIFS share and read it from another one root@<hostname1>:~# while true; do echo "$(date) hallo" >> /mnt/hallo.txt; sleep 1 ; done -bash: /mnt/hallo.txt: Input/output error -bash: /mnt/hallo.txt: Input/output error ^C root@<hostname2>:~$ tail -f /mnt/hallo.txt Tue Apr 9 04:10:52 PM CEST 2024 hallo Tue Apr 9 04:10:53 PM CEST 2024 hallo Tue Apr 9 04:10:54 PM CEST 2024 hallo Tue Apr 9 04:10:55 PM CEST 2024 hallo Tue Apr 9 04:10:56 PM CEST 2024 hallo Tue Apr 9 04:10:57 PM CEST 2024 hallo Tue Apr 9 04:10:58 PM CEST 2024 hallo Tue Apr 9 04:10:59 PM CEST 2024 hallo Tue Apr 9 04:11:00 PM CEST 2024 hallo Tue Apr 9 04:11:01 PM CEST 2024 hallo tail: cannot determine location of '/mnt/hallo.txt'. reverting to polling: Resource temporarily unavailable Tue Apr 9 04:11:04 PM CEST 2024 hallo Tue Apr 9 04:11:05 PM CEST 2024 hallo Tue Apr 9 04:11:06 PM CEST 2024 hallo Tue Apr 9 04:11:07 PM CEST 2024 hallo Tue Apr 9 04:11:08 PM CEST 2024 hallo Tue Apr 9 04:11:09 PM CEST 2024 hallo Tue Apr 9 04:11:10 PM CEST 2024 hallo While doing this, both servers tell me, the resource is unavailable root@<hostname1>:~# df -h /mnt df: /mnt: Resource temporarily unavailable root@<hostname2>:~$ df -h /mnt df: /mnt: Resource temporarily unavailable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2060780/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
