From: Nathan Chancellor <natechancellor@gmail.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
Andy Gross <agross@kernel.org>
Cc: Sibi Sankar <sibis@codeaurora.org>,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
clang-built-linux@googlegroups.com,
Nathan Chancellor <natechancellor@gmail.com>
Subject: [PATCH] soc: qcom: pdr: Avoid uninitialized use of found in pdr_indication_cb
Date: Mon, 16 Mar 2020 13:48:55 -0700 [thread overview]
Message-ID: <20200316204855.15611-1-natechancellor@gmail.com> (raw)
Clang warns:
../drivers/soc/qcom/pdr_interface.c:316:2: warning: variable 'found' is
used uninitialized whenever 'for' loop exits because its condition is
false [-Wsometimes-uninitialized]
list_for_each_entry(pds, &pdr->lookups, node) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/list.h:624:7: note: expanded from macro
'list_for_each_entry'
&pos->member != (head);
^~~~~~~~~~~~~~~~~~~~~~
../drivers/soc/qcom/pdr_interface.c:325:7: note: uninitialized use
occurs here
if (!found)
^~~~~
../drivers/soc/qcom/pdr_interface.c:316:2: note: remove the condition if
it is always true
list_for_each_entry(pds, &pdr->lookups, node) {
^
../include/linux/list.h:624:7: note: expanded from macro
'list_for_each_entry'
&pos->member != (head);
^
../drivers/soc/qcom/pdr_interface.c:309:12: note: initialize the
variable 'found' to silence this warning
bool found;
^
= 0
1 warning generated.
Initialize found to false to fix this warning.
Fixes: fbe639b44a82 ("soc: qcom: Introduce Protection Domain Restart helpers")
Link: https://github.com/ClangBuiltLinux/linux/issues/933
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
drivers/soc/qcom/pdr_interface.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/qcom/pdr_interface.c b/drivers/soc/qcom/pdr_interface.c
index 7ee088b9cc7c..17ad3b8698e1 100644
--- a/drivers/soc/qcom/pdr_interface.c
+++ b/drivers/soc/qcom/pdr_interface.c
@@ -306,7 +306,7 @@ static void pdr_indication_cb(struct qmi_handle *qmi,
const struct servreg_state_updated_ind *ind_msg = data;
struct pdr_list_node *ind;
struct pdr_service *pds;
- bool found;
+ bool found = false;
if (!ind_msg || !ind_msg->service_path[0] ||
strlen(ind_msg->service_path) > SERVREG_NAME_LENGTH)
--
2.26.0.rc1
next reply other threads:[~2020-03-16 20:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-16 20:48 Nathan Chancellor [this message]
2020-03-16 20:59 ` [PATCH] soc: qcom: pdr: Avoid uninitialized use of found in pdr_indication_cb Nick Desaulniers
2020-03-16 22:09 ` Bjorn Andersson
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