RHEL6.5: kernel with openafs module panics with RIP cache_alloc_refill called from getname, names_cache corrupted
Issue
- Repeated kernel panics after updating to RHEL6.5 kernel 2.6.32-431.el6 from RHEL6.4 kernel (2.6.32-358*.el6). Kernel contains openafs module.
- Kernel panics with
kernel BUG at mm/slab.c:3069!similar to the following, indicatingnames_cacheis corrupted:
kernel BUG at mm/slab.c:3069!
...
RIP: 0010:[<ffffffff8116ed24>] [<ffffffff8116ed24>] cache_alloc_refill+0x1e4/0x240
...
Call Trace:
[<ffffffff8116fddf>] kmem_cache_alloc+0x15f/0x190
[<ffffffff81197007>] getname+0x47/0x240
[<ffffffff81185cf2>] do_sys_open+0x32/0x140
[<ffffffff81185e40>] sys_open+0x20/0x30
Environment
- Red Hat Enterprise Linux 6.5
- seen on kernel 2.6.32-431.el6
- all kernels above 2.6.32-431.el6 are likely affected
- seen with the following properietary modules, in particular openafs
openafs(P)(U) vmci(U) vsock(U)
- openafs-1.6.5-1
dkms-openafs-1.6.5-1.el6.x86_64 Wed Jul 31 10:26:02 2013
openafs-1.6.5-1.el6.x86_64 Wed Jul 31 10:26:00 2013
openafs-authlibs-1.6.5-1.el6.x86_64 Wed Jul 31 10:32:34 2013
openafs-client-1.6.5-1.el6.x86_64 Wed Jul 31 10:26:01 2013
openafs-docs-1.6.5-1.el6.x86_64 Wed Jul 31 10:32:33 2013
openafs-krb5-1.6.5-1.el6.x86_64 Wed Jul 31 10:32:33 2013
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