[OpenAFS-devel] [CSL #328045] kernel BUG: file locks and openafs 1.4.2

[David Thompson]

Christopher Allen Wing wrote:
>The test case for this bug is:
>
> 	1. Get two computers (host A, host B) running the AFS client
>
> 	2. Create a file in AFS (you can just use 'touch')
>
> 	3. on host A, run a program that calls lockf() on this file, e.g.
> 	   like this:
>
> 		http://www-personal.engin.umich.edu/~wingc/openafs/code/lock.c
>
> 	4. Now go to host B and delete the file.
>
> 	5. Go back to host A and kill the program holding the lock
>
> 	6. The kernel will now crash on host A (if host A is running the
> 	   buggy version of OpenAFS)

We've seen it with Firefox (for user with home directory in afs: open browser 
on host A, then on host B, then close B, then close A.  A dies with BUG 
described earlier.)  Probably locking/deleting going on as per your example.

Thanks again.

Dave