From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Mon, 7 Dec 2009 02:14:17 +0000 (+0100)
Subject: hw-breakpoints: Zeroe the breakpoint attrs on initialization
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ed872d09effd54aa8ecb4ceedbc4dbab9592f337;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

hw-breakpoints: Zeroe the breakpoint attrs on initialization

The perf attrs used to set up breakpoint parameters are often allocated
in the stack and not zeroed out before calling hw_breakpoint_init().
Handle it from this helper to avoid random attributes set by the stack.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Prasad <prasad@linux.vnet.ibm.com>
---

diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index 4d14a384a01e..42da1ce19ec0 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -22,6 +22,8 @@ enum {
 
 static inline void hw_breakpoint_init(struct perf_event_attr *attr)
 {
+	memset(attr, 0, sizeof(*attr));
+
 	attr->type = PERF_TYPE_BREAKPOINT;
 	attr->size = sizeof(*attr);
 	/*