[PATCH 5.12 176/292] module: correctly exit module_kallsyms_on_each_symbol when fn() != 0

[Greg Kroah-Hartman]

From: Jon Mediero <jmdr@xxxxxxxxxxx>

[ Upstream commit 2c0f0f3639562d6e38ee9705303c6457c4936eac ]

Commit 013c1667cf78 ("kallsyms: refactor
{,module_}kallsyms_on_each_symbol") replaced the return inside the
nested loop with a break, changing the semantics of the function: the
break only exits the innermost loop, so the code continues iterating the
symbols of the next module instead of exiting.

Fixes: 013c1667cf78 ("kallsyms: refactor {,module_}kallsyms_on_each_symbol")
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Reviewed-by: Miroslav Benes <mbenes@xxxxxxx>
Signed-off-by: Jon Mediero <jmdr@xxxxxxxxxxx>
Signed-off-by: Jessica Yu <jeyu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 kernel/module.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/module.c b/kernel/module.c
index 260d6f3f6d68..f928037a1b56 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -4410,9 +4410,10 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
 			ret = fn(data, kallsyms_symbol_name(kallsyms, i),
 				 mod, kallsyms_symbol_value(sym));
 			if (ret != 0)
-				break;
+				goto out;
 		}
 	}
+out:
 	mutex_unlock(&module_mutex);
 	return ret;
 }
-- 
2.30.2