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Use call_usermodehelper_setup() + call_usermodehelper_exec() instead of calling call_usermodehelper_fns(). In case there's an OOM in this last function the cleanup function may not be called - in this case we would miss a call to key_put(). Signed-off-by: Lucas De Marchi <[email protected]> Cc: Oleg Nesterov <[email protected]> Acked-by: David Howells <[email protected]> Acked-by: James Morris <[email protected]> Cc: Al Viro <[email protected]> Cc: Tejun Heo <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>