diff options
| author | Xiaoke Wang <xkernel.wang@foxmail.com> | 2021-12-14 04:28:02 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-08 21:12:38 +0300 |
| commit | 8a20fed48eb48bd3ef7d5649b3e9aeb038a79673 (patch) | |
| tree | 90b651a2b547443630b5688f7aebe5e91598b732 /kernel | |
| parent | 1a62246c2c600e4b5dabe1a5794c6d0bf5a860b5 (diff) | |
| download | linux-8a20fed48eb48bd3ef7d5649b3e9aeb038a79673.tar.xz | |
tracing/uprobes: Check the return value of kstrdup() for tu->filename
[ Upstream commit 8c7224245557707c613f130431cafbaaa4889615 ]
kstrdup() returns NULL when some internal memory errors happen, it is
better to check the return value of it so to catch the memory error in
time.
Link: https://lkml.kernel.org/r/tencent_3C2E330722056D7891D2C83F29C802734B06@qq.com
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: 33ea4b24277b ("perf/core: Implement the 'perf_uprobe' PMU")
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_uprobe.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index f5f0039d31e5..78ec1c16ccf4 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -1619,6 +1619,11 @@ 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; |