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authorMasami Hiramatsu (Google) <mhiramat@kernel.org>2024-03-20 17:10:38 +0900
committerMasami Hiramatsu (Google) <mhiramat@kernel.org>2024-03-25 16:24:31 +0900
commit0add699ad068d26e5b1da9ff28b15461fc4005df (patch)
tree3fa74050e6350890dedc90cea4e4876191e231d4 /kernel
parente8c32f24766a1f22da024e73d1eb8e9c822482ac (diff)
tracing: probes: Fix to zero initialize a local variable
Fix to initialize 'val' local variable with zero. Dan reported that Smatch static code checker reports an error that a local 'val' variable needs to be initialized. Actually, the 'val' is expected to be initialized by FETCH_OP_ARG in the same loop, but it is not obvious. So initialize it with zero. Link: https://lore.kernel.org/all/171092223833.237219.17304490075697026697.stgit@devnote2/ Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/all/b010488e-68aa-407c-add0-3e059254aaa0@moroto.mountain/ Fixes: 25f00e40ce79 ("tracing/probes: Support $argN in return probe (kprobe and fprobe)") Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_probe.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 217169de0920..dfe3ee6035ec 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -839,7 +839,7 @@ out:
void store_trace_entry_data(void *edata, struct trace_probe *tp, struct pt_regs *regs)
{
struct probe_entry_arg *earg = tp->entry_arg;
- unsigned long val;
+ unsigned long val = 0;
int i;
if (!earg)