Messages in this thread Patch in this message | | | From | Li Zhong <> | Subject | [PATCH v2] drivers/base/auxiliary: check return value of strrchr() | Date | Sat, 3 Sep 2022 17:51:56 -0700 |
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The return value of strrchr() could be NULL, which will cause invalid offset in (int)(p - name). So we check it here.
Signed-off-by: Li Zhong <floridsleeves@gmail.com> --- drivers/base/auxiliary.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c index 8c5e65930617..2ec0306bfba3 100644 --- a/drivers/base/auxiliary.c +++ b/drivers/base/auxiliary.c @@ -191,6 +191,8 @@ static int auxiliary_uevent(struct device *dev, struct kobj_uevent_env *env) name = dev_name(dev); p = strrchr(name, '.'); + if (!p) + return -EINVAL; return add_uevent_var(env, "MODALIAS=%s%.*s", AUXILIARY_MODULE_PREFIX, (int)(p - name), name); -- 2.25.1
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