linux-kernel - Re: [PATCH 0/3] s390 refcount conversions

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Date:   Mon, 23 Oct 2017 14:11:13 +0200
From:   Julian Wiedmann <jwi@...ux.vnet.ibm.com>
To:     Elena Reshetova <elena.reshetova@...el.com>,
        linux-s390@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, schwidefsky@...ibm.com,
        heiko.carstens@...ibm.com, ubraun@...ux.vnet.ibm.com,
        peterz@...radead.org, keescook@...omium.org
Subject: Re: [PATCH 0/3] s390 refcount conversions

On 10/20/2017 09:47 AM, Elena Reshetova wrote:
> This series, for S390, replaces atomic_t reference
> counters with the new refcount_t type and API (see include/linux/refcount.h).
> By doing this we prevent intentional or accidental
> underflows or overflows that can led to use-after-free vulnerabilities.
> 
> The patches are fully independent and can be cherry-picked separately.
> Patches are based on top of linux-next as of yesterday.
> If there are no objections to the patches, please merge them via respective trees
> 
> Elena Reshetova (3):
>   [S390] vmur: convert urdev.ref_count from atomic_t to refcount_t
>   [S390] net: convert lcs_reply.refcnt from atomic_t to refcount_t
>   [S390] qeth: convert qeth_reply.refcnt from atomic_t to refcount_t
> 
>  drivers/s390/char/vmur.c          |  8 ++++----
>  drivers/s390/char/vmur.h          |  4 +++-
>  drivers/s390/net/lcs.c            | 10 +++++-----
>  drivers/s390/net/lcs.h            |  3 ++-
>  drivers/s390/net/qeth_core.h      |  3 ++-
>  drivers/s390/net/qeth_core_main.c | 10 +++++-----
>  6 files changed, 21 insertions(+), 17 deletions(-)
> 
Thanks Elena, I picked up the two network patches. Also removed the WARN_ONs while applying,
those who care may use CONFIG_REFCOUNT_FULL.