tracefs_ops is initialized inside tracefs_create_instance_dir and not
modified after. tracefs_create_instance_dir allows for initialization
only once, and is called from create_trace_instances(marked __init),
which is called from tracer_init_tracefs(marked __init). Also, mark
tracefs_create_instance_dir as __init.
Link: http://lkml.kernel.org/r/20180725171901.4468-1-zsm@chromium.org
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
static struct tracefs_dir_ops {
int (*mkdir)(const char *name);
int (*rmdir)(const char *name);
-} tracefs_ops;
+} tracefs_ops __ro_after_init;
static char *get_dname(struct dentry *dentry)
{
*
* Returns the dentry of the instances directory.
*/
-struct dentry *tracefs_create_instance_dir(const char *name, struct dentry *parent,
+__init struct dentry *tracefs_create_instance_dir(const char *name,
+ struct dentry *parent,
int (*mkdir)(const char *name),
int (*rmdir)(const char *name))
{