RHEL7.1: kernel crash due to list_del corruption and LIST_POISON called from cifs find_writeable_file
Issue
- System crashed while running 'tar' which was doing a backup to CIFS
- Prior to the crash, we see a lot of the following messages:
CIFS VFS: No writable handles for inode
Environment
- Red Hat Enterprise Linux 7.1
- kernel 3.10.0-229.1.2.el7
- cifs
- 'tar' command being used to backup a database to CIFS
- seen with EMC / VMX CIFS server
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