Messages in this thread |  | | From | Masami Hiramatsu <> | Subject | [PATCH 0/4] perf-probe: Fix GNU IFUNC probe issue etc. | Date | Thu, 9 Jul 2020 17:06:51 +0900 |
| |
Hi,
Here are patches to fix some issues of probing on GNU IFUNC, duplicated symbols, and memory leak, which were reported by Andi.
Andi reported that some issues on probing memcpy function in glibc, which was related to GNU IFUNC (indirect function). As I described in the patch [4/4], it is hard to support probing on the functions which are selected by GNU indirect function because those are chosen at runtime. I think we need a user-mode helper in uprobes to find which one is chosen at runtime. (Oleg, Srikar, would you have any idea?)
While cleaning up the patches, I also found a memory leak problem so fixed it ([3/4]).
Thank you,
---
Masami Hiramatsu (4): perf-probe: Avoid setting probes on same address on same event perf-probe: Fix wrong variable warning when the probe point is not found perf-probe: Fix memory leakage when the probe point is not found perf-probe: Warn if the target function is GNU Indirect function
tools/perf/util/probe-event.c | 14 ++++++++++++++ tools/perf/util/probe-finder.c | 5 ++++- 2 files changed, 18 insertions(+), 1 deletion(-)
-- Masami Hiramatsu (Linaro) <mhiramat@kernel.org>
|  |