diff options
author | Yafang Shao <laoar.shao@gmail.com> | 2023-07-09 02:56:25 +0000 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2023-07-11 20:07:51 -0700 |
commit | 5125e757e62f6c1d5478db4c2b61a744060ddf3f (patch) | |
tree | b3d34621fe8b04695ee404a2370e90a4500da868 /kernel/trace/bpf_trace.c | |
parent | f1a414537ecc18b5882a57045ce3e4a11e528290 (diff) |
bpf: Clear the probe_addr for uprobe
To avoid returning uninitialized or random values when querying the file
descriptor (fd) and accessing probe_addr, it is necessary to clear the
variable prior to its use.
Fixes: 41bdc4b40ed6 ("bpf: introduce bpf subcommand BPF_TASK_FD_QUERY")
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230709025630.3735-6-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/trace/bpf_trace.c')
-rw-r--r-- | kernel/trace/bpf_trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index acb3d6dd7a77..31ec0e2853ec 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -2384,7 +2384,7 @@ int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id, #ifdef CONFIG_UPROBE_EVENTS if (flags & TRACE_EVENT_FL_UPROBE) err = bpf_get_uprobe_info(event, fd_type, buf, - probe_offset, + probe_offset, probe_addr, event->attr.type == PERF_TYPE_TRACEPOINT); #endif } |