pstore: Inform unregistered backend names as well

guilhermepiccoli · kees · commit 6a14f1982e6b · 2022-10-17T13:14:10.000-07:00
Currently we only show the registered ones in the kernel log; users that change backend for some reason require first to unregister the current one, so let's confirm this operation with a message in the log. Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20221006224212.569555-4-gpiccoli@igalia.com
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
@@ -665,6 +665,8 @@ void pstore_unregister(struct pstore_info *psi)
 	psinfo = NULL;
 	kfree(backend);
 	backend = NULL;
+
+	pr_info("Unregistered %s as persistent store backend\n", psi->name);
 	mutex_unlock(&psinfo_lock);
 }
 EXPORT_SYMBOL_GPL(pstore_unregister);

Original file line number	Diff line number	Diff line change
`@@ -665,6 +665,8 @@ void pstore_unregister(struct pstore_info *psi)`
`665`	`665`	`psinfo = NULL;`
`666`	`666`	`kfree(backend);`
`667`	`667`	`backend = NULL;`
	`668`	`+`
	`669`	`+ pr_info("Unregistered %s as persistent store backend\n", psi->name);`
`668`	`670`	`mutex_unlock(&psinfo_lock);`
`669`	`671`	`}`
`670`	`672`	`EXPORT_SYMBOL_GPL(pstore_unregister);`