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tracing: Fix wrong uprobe variable in iterator

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uprobe_perf_open() processes a list of probes, but due to a missing
 setting of the uprobe to be processed, the loop processes the head probe
 instead of the added probes.
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Merge tag 'trace-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Fix wrong uprobe variable in iterator

  uprobe_perf_open() processes a list of probes, but due to a missing
  setting of the uprobe to be processed, the loop processes the head
  probe instead of the added probes"

* tag 'trace-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/uprobe: Fix uprobe_perf_open probes iteration
This commit is contained in:
Linus Torvalds 2021-11-24 09:51:22 -08:00
commit 29889216be
1 changed files with 1 additions and 0 deletions
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1
kernel/trace/trace_uprobe.c
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@ -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);