This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-precise- needed' to 'verification-precise-done'.
If verification is not done by one week from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-precise ** Tags added: verification-needed-quantal -- 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/1222442 Title: Linux kernel regression: Links on CIFS shares Status in “linux” package in Ubuntu: Fix Committed Bug description: After upgrading from (Ubuntu) kernel version 3.2.0-45-generic to 3.2.0-48-generic on Ubuntu Precise (x86_64), links on CIFS shares are broken. The used setup is the following: Clients running Ubuntu Precise mount a CIFS share with mount -t cifs -o sec=krb5,multiuser,cifsacl,serverino,nobrl,nounix,cruid=xyz,mfsymlinks //srv.example.com /mnt/cifs Issuing the following commands touch hello ln -s hello hello2 ls -l on the mounted CIFS share results in the output ls: cannot read symbolic link hello2: Invalid argument total 1024 -rwxr-xr-x 0 user group 0 Sep 8 16:36 hello lrwxrwxrwx 1 user group 5 Sep 8 16:36 hello2 for kernel versions >= 3.2.0-48-generic. Running "less hello2" yields: hello2 is not a regular file (use -f to see it) Using "less -f hello2" changes the error message to hello2: Too many levels of symbolic links Some of our users only see this problem if there is at least one reboot of the client between link creation and link access. The problem can be traced back to the following kernel code change: ------------------------------------------------------------------------------------------------------- diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index e851d5b..20431b4 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -173,7 +173,8 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL) inode->i_flags |= S_AUTOMOUNT; - cifs_set_ops(inode); + if (inode->i_state & I_NEW) + cifs_set_ops(inode); } void ------------------------------------------------------------------------------------------------------- Reverting this change fixes the problem. Another way to get rid of the error is to remove the "nounix" and "mksymlinks" mount options but this slows down the setup such that it becomes practically useless. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1222442/+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
