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authorIngo Molnar <mingo@kernel.org>2017-10-24 13:17:20 +0200
committerIngo Molnar <mingo@kernel.org>2017-10-24 13:17:20 +0200
commit9babb091e0ec84f7503fde0a2d9a2a16a0f48e3c (patch)
tree9b6f07288b9ca9d8444414cd7da291d7c4731da7 /kernel/fork.c
parent5cdda5117e125e0dbb020425cc55a4c143c6febc (diff)
parentbb176f67090ca54869fc1262c913aa69d2ede070 (diff)
Merge tag 'v4.14-rc6' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index e702cb9ffbd8..07cc743698d3 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -215,6 +215,10 @@ static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node)
if (!s)
continue;
+#ifdef CONFIG_DEBUG_KMEMLEAK
+ /* Clear stale pointers from reused stack. */
+ memset(s->addr, 0, THREAD_SIZE);
+#endif
tsk->stack_vm_area = s;
return s->addr;
}