uprobe_perf_print() passes addr=ip to perf_trace_buf_submit() for no reason. This sets perf_sample_data->addr for PERF_SAMPLE_ADDR, we already have perf_sample_data->ip initialized if PERF_SAMPLE_IP.
Signed-off-by: Oleg Nesterov <o...@redhat.com> --- kernel/trace/trace_uprobe.c | 8 +++----- 1 files changed, 3 insertions(+), 5 deletions(-) diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 2d08bea..37ccb72 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -811,7 +811,6 @@ static void uprobe_perf_print(struct trace_uprobe *tu, struct ftrace_event_call *call = &tu->call; struct uprobe_trace_entry_head *entry; struct hlist_head *head; - unsigned long ip; void *data; int size, rctx, i; @@ -825,13 +824,12 @@ static void uprobe_perf_print(struct trace_uprobe *tu, if (!entry) goto out; - ip = instruction_pointer(regs); if (is_ret_probe(tu)) { entry->vaddr[0] = func; - entry->vaddr[1] = ip; + entry->vaddr[1] = instruction_pointer(regs); data = DATAOF_TRACE_ENTRY(entry, true); } else { - entry->vaddr[0] = ip; + entry->vaddr[0] = instruction_pointer(regs); data = DATAOF_TRACE_ENTRY(entry, false); } @@ -839,7 +837,7 @@ static void uprobe_perf_print(struct trace_uprobe *tu, call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset); head = this_cpu_ptr(call->perf_events); - perf_trace_buf_submit(entry, size, rctx, ip, 1, regs, head, NULL); + perf_trace_buf_submit(entry, size, rctx, 0, 1, regs, head, NULL); out: preempt_enable(); } -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/