From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041111 Firefox/1.0 Description of problem: When mounting an NFS server with NFS version 3 and Kerberos security, a variety of bad things happen when any application tries to lock or unlock files on sec=krb5 mounts, such as application hangs and kernel oopses. The problem is that kernel NLM tries to use a GSS credential when it should be using an AUTH_SYS credential. Note this is also a problem for RHEL 4.0. Version-Release number of selected component (if applicable): 2.6.10-1.741_FC3 How reproducible: Always Steps to Reproduce: 1. Mount a NetApp filer with the sec=krb5 option 2. kinit yourself 3. Run the Connectathon locking tests on that mount Actual Results: Kernel oops or application hangs (sorry, i don't have the oops output any more, but you should be able to reproduce some misbehavior using the steps listed above). Expected Results: Connectathon tests should pass with only one warning. Additional info: I'll attach a patch that Trond created for 2.6.11-rc2 that fixes this problem.
Created attachment 110459 [details] Allow NLM to work when mounting with sec=krb5 option This is an equivalent patch to Trond's linux-2.6.11-13-fixup_nlm_auth.dif.
fixed in cvs, will be in the next kernel thanks Chuck.
Kernels with the fix in them are in: ftp://partners.redhat.com/8cd6de3e57442035516b60f12911e067/2.6.9-11.EL/ If possible be give them try to ensure the problem is fixed.