[PATCH] Fix module refcount leak in __set_personality()

[Sergey Vlasov <vsu@altlinux.ru>]

If the change of personality does not lead to change of exec domain,
__set_personality() returned without releasing the module reference
acquired by lookup_exec_domain().

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>

---

diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
index 867d6db..c01cead 100644
--- a/kernel/exec_domain.c
+++ b/kernel/exec_domain.c
@@ -140,6 +140,7 @@ __set_personality(u_long personality)
 	ep = lookup_exec_domain(personality);
 	if (ep == current_thread_info()->exec_domain) {
 		current->personality = personality;
+		module_put(ep->module);
 		return 0;
 	}
 
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