When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.
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| @@ -163,10 +163,7 @@ static void fei_debugfs_add_attr(struct fei_attr *attr) · 162 unmodified lines | ||
| 163 | 163 | |
| 164 | 164 | static void fei_debugfs_remove_attr(struct fei_attr *attr) |
| 165 | 165 | { |
| 166 | − struct dentry *dir; | |
| 167 | − | |
| 168 | − dir = debugfs_lookup(attr->kp.symbol_name, fei_debugfs_dir); | |
| 169 | − debugfs_remove_recursive(dir); | |
| 166 | + debugfs_lookup_and_remove(attr->kp.symbol_name, fei_debugfs_dir); | |
| 170 | 167 | } |
| 171 | 168 | |
| 172 | 169 | static int fei_kprobe_handler(struct kprobe *kp, struct pt_regs *regs) |