Note: Compare with the last email, this one is using my full name.
And I am sorry that yesterday I did not notice the bugs in trace_boot.c had been
already patched.
kstrdup() returns NULL when some internal memory errors happen, it is
better to check the return value of it.
Signed-off-by: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx>
---
kernel/trace/trace_uprobe.c | 5 +++++
1 files changed, 5 insertions(+)
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 225ce56..173ff0f 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -1618,6 +1618,11 @@ create_local_trace_uprobe(char *name, unsigned long offs,
tu->path = path;
tu->ref_ctr_offset = ref_ctr_offset;
tu->filename = kstrdup(name, GFP_KERNEL);
+ if (!tu->filename) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
init_trace_event_call(tu);
ptype = is_ret_probe(tu) ? PROBE_PRINT_RETURN : PROBE_PRINT_NORMAL;
--
