[GIT PULL] perf fix

From: Ingo Molnar
Date: Thu Sep 12 2019 - 04:39:09 EST


Linus,

Please pull the latest perf-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-for-linus

# HEAD: 310aa0a25b338b3100c94880c9a69bec8ce8c3ae perf/hw_breakpoint: Fix arch_hw_breakpoint use-before-initialization

Fix an initialization bug in the hw-breakpoints, which triggered on the
ARM platform.

Thanks,

Ingo

------------------>
Mark-PK Tsai (1):
perf/hw_breakpoint: Fix arch_hw_breakpoint use-before-initialization


kernel/events/hw_breakpoint.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index c5cd852fe86b..3cc8416ec844 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -413,7 +413,7 @@ static int hw_breakpoint_parse(struct perf_event *bp,

int register_perf_hw_breakpoint(struct perf_event *bp)
{
- struct arch_hw_breakpoint hw;
+ struct arch_hw_breakpoint hw = { };
int err;

err = reserve_bp_slot(bp);
@@ -461,7 +461,7 @@ int
modify_user_hw_breakpoint_check(struct perf_event *bp, struct perf_event_attr *attr,
bool check)
{
- struct arch_hw_breakpoint hw;
+ struct arch_hw_breakpoint hw = { };
int err;

err = hw_breakpoint_parse(bp, attr, &hw);