ramoops: Only unregister when registered

While none of the "fragile" pstore backends unregister yet, if they ever did, the unregistering code for the non-dump targets might get confused. This adds a check for fragile backends on unregister. Signed-off-by: Kees Cook <[email protected]>
klaby · May 31, 2016 · a1db806 · a1db806
1 parent 1a695a9
commit a1db806
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
@@ -497,9 +497,11 @@ EXPORT_SYMBOL_GPL(pstore_register);
 
 void pstore_unregister(struct pstore_info *psi)
 {
-	pstore_unregister_pmsg();
-	pstore_unregister_ftrace();
-	pstore_unregister_console();
+	if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) {
+		pstore_unregister_pmsg();
+		pstore_unregister_ftrace();
+		pstore_unregister_console();
+	}
 	pstore_unregister_kmsg();
 
 	free_buf_for_compression();