CIFS client panics in cifsFileInfo_put due to a freed cifsFileInfo struct
Issue
Frequent kernel panics on a CIFS client inside cifsFileInfo_put
Environment
- Red Hat Enterprise Linux 7
- seen on 3.10.0-693.21.1.el7, 3.10.0-862.9.1.el7, 3.10.0-957.5.1.el7
- Red Hat Enterprise Linux 8
- kernel versions including 4.18.0-147.el8 may be affected
- cifs client
- seen on CIFS 3.0 + Kerberos mount
- multithreaded app. with frequent open/write/close a file
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