Re: [PATCH -v4] futex: fix reference leak

[Ingo Molnar]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> Subject: futex: fix reference leak
> From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> 
> Catalin noticed that (38d47c1b7075: futex: rely on get_user_pages() for
> shared futexes) caused an mm_struct leak.
> 
> Some tracing with the function graph tracer quickly pointed out that
> futex_wait() has exit paths with unbalanced reference counts.
> 
> This regression was discovered by kmemleak.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> Tested-by: "Pallipadi, Venkatesh" <venkatesh.pallipadi@xxxxxxxxx>
> Tested-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> Reported-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> ---
>  kernel/futex.c |   53 ++++++++++++++++++++++++++++-------------------------
>  1 files changed, 28 insertions(+), 25 deletions(-)

Applied to tip:core/urgent, thanks guys!

	Ingo
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