From a3e90db5180fd7f5d38940e2022aee19c3332f3e Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 23 Nov 2021 15:28:01 +0100 Subject: [PATCH] tracing/uprobe: Fix uprobe_perf_open probes iteration commit 1880ed71ce863318c1ce93bf324876fb5f92854f upstream. Add missing 'tu' variable initialization in the probes loop, otherwise the head 'tu' is used instead of added probes. Link: https://lkml.kernel.org/r/20211123142801.182530-1-jolsa@kernel.org Cc: stable@vger.kernel.org Fixes: 99c9a923e97a ("tracing/uprobe: Fix double perf_event linking on multiprobe uprobe") Acked-by: Masami Hiramatsu Signed-off-by: Jiri Olsa Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace_uprobe.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 0a5c0db3137e..f5f0039d31e5 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -1313,6 +1313,7 @@ static int uprobe_perf_open(struct trace_event_call *call, return 0; list_for_each_entry(pos, trace_probe_probe_list(tp), list) { + tu = container_of(pos, struct trace_uprobe, tp); err = uprobe_apply(tu->inode, tu->offset, &tu->consumer, true); if (err) { uprobe_perf_close(call, event);