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[5.4,249/314] tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes

Message ID 20200623195350.825256873@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH June 23, 2020, 7:57 p.m. UTC 
From: Jean-Philippe Brucker <jean-philippe@linaro.org>


[ Upstream commit 22d5bd6867364b41576a712755271a7d6161abd6 ]

Commit 60d53e2c3b75 ("tracing/probe: Split trace_event related data from
trace_probe") removed the trace_[ku]probe structure from the
trace_event_call->data pointer. As bpf_get_[ku]probe_info() were
forgotten in that change, fix them now. These functions are currently
only used by the bpf_task_fd_query() syscall handler to collect
information about a perf event.

Fixes: 60d53e2c3b75 ("tracing/probe: Split trace_event related data from trace_probe")
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Acked-by: Yonghong Song <yhs@fb.com>

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>

Link: https://lore.kernel.org/bpf/20200608124531.819838-1-jean-philippe@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

---
 kernel/trace/trace_kprobe.c | 2 +-
 kernel/trace/trace_uprobe.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

-- 
2.25.1
diff mbox series

Patch

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index fba4b48451f6c..26de9c6549566 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1464,7 +1464,7 @@  int bpf_get_kprobe_info(const struct perf_event *event, u32 *fd_type,
 	if (perf_type_tracepoint)
 		tk = find_trace_kprobe(pevent, group);
 	else
-		tk = event->tp_event->data;
+		tk = trace_kprobe_primary_from_call(event->tp_event);
 	if (!tk)
 		return -EINVAL;
 
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 2619bc5ed520c..5294843de6efd 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -1405,7 +1405,7 @@  int bpf_get_uprobe_info(const struct perf_event *event, u32 *fd_type,
 	if (perf_type_tracepoint)
 		tu = find_probe_event(pevent, group);
 	else
-		tu = event->tp_event->data;
+		tu = trace_uprobe_primary_from_call(event->tp_event);
 	if (!tu)
 		return -EINVAL;