[PATCH -next] livepatch: Fix missing unlock on error in klp_enable_patch()
From: Yang Yingliang <hidden>
Date: 2021-12-25 02:45:31
Also in:
live-patching
Subsystem:
live patching, the rest · Maintainers:
Josh Poimboeuf, Jiri Kosina, Miroslav Benes, Petr Mladek, Linus Torvalds
Add missing unlock when try_module_get() fails in klp_enable_patch().
Fixes: bf01c2975925 ("livepatch: Fix kobject refcount bug on klp_init_patch_early failure path")
Reported-by: Hulk Robot <redacted>
Signed-off-by: Yang Yingliang <redacted>
---
kernel/livepatch/core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 23cf444091a8..01bfab7fe7c0 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c@@ -1047,8 +1047,10 @@ int klp_enable_patch(struct klp_patch *patch) return -EINVAL; } - if (!try_module_get(patch->mod)) + if (!try_module_get(patch->mod)) { + mutex_unlock(&klp_mutex); return -ENODEV; + } klp_init_patch_early(patch);
--
2.25.1