[tip:sched/core] sched/core: Fix &rd->cpudl memory leak

From: tip-bot for Mathieu Poirier
Date: Mon Jan 30 2017 - 06:57:14 EST

Commit-ID: 4b12db939166042eb78e592bdf94ef113c14e379
Gitweb: http://git.kernel.org/tip/4b12db939166042eb78e592bdf94ef113c14e379
Author: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
AuthorDate: Tue, 24 Jan 2017 14:11:35 -0700
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 30 Jan 2017 11:46:37 +0100

sched/core: Fix &rd->cpudl memory leak

While in the process of initialising a root domain, if function
cpupri_init() fails the memory allocated in cpudl_init() is not

Adding a new goto target to cleanup the previous initialistion of
the root_domain's dl_bw structure reclaims said memory.

Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1485292295-21298-2-git-send-email-mathieu.poirier@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
kernel/sched/core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 17d1df6..d01f9d0 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5979,9 +5979,11 @@ static int init_rootdomain(struct root_domain *rd)
goto free_rto_mask;

if (cpupri_init(&rd->cpupri) != 0)
- goto free_rto_mask;
+ goto free_cpudl;
return 0;

+ cpudl_cleanup(&rd->cpudl);