linux-kernel - RE: [PATCH 1/1] Drivers: hv: util: don't forget to init host

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Date:   Sun, 5 Mar 2017 00:02:18 +0000
From:   KY Srinivasan <kys@...rosoft.com>
To:     KY Srinivasan <kys@...rosoft.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "olaf@...fle.de" <olaf@...fle.de>,
        "apw@...onical.com" <apw@...onical.com>,
        "vkuznets@...hat.com" <vkuznets@...hat.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "leann.ogasawara@...onical.com" <leann.ogasawara@...onical.com>
CC:     Dexuan Cui <decui@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>
Subject: RE: [PATCH 1/1] Drivers: hv: util: don't forget to init host_ts.lock



> -----Original Message-----
> From: kys@...hange.microsoft.com [mailto:kys@...hange.microsoft.com]
> Sent: Monday, February 27, 2017 5:26 PM
> To: gregkh@...uxfoundation.org; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
> vkuznets@...hat.com; jasowang@...hat.com;
> leann.ogasawara@...onical.com
> Cc: Dexuan Cui <decui@...rosoft.com>; KY Srinivasan
> <kys@...rosoft.com>; Haiyang Zhang <haiyangz@...rosoft.com>; Stephen
> Hemminger <sthemmin@...rosoft.com>
> Subject: [PATCH 1/1] Drivers: hv: util: don't forget to init host_ts.lock
> 
> This&nbsp;sender&nbsp;failed&nbsp;our&nbsp;fraud&nbsp;detection&nbs
> p;checks&nbsp;and&nbsp;may&nbsp;not&nbsp;be&nbsp;who&nbsp;they&
> nbsp;appear&nbsp;to&nbsp;be.&nbsp;Learn&nbsp;about&nbsp;<a
> href="http://aka.ms/LearnAboutSpoofing">spoofing</a>
> 
> From: Dexuan Cui <decui@...rosoft.com>
> 
> Without the patch, I always get a "BUG: spinlock bad magic" warning.
> 
> Fixes: 3716a49a81ba ("hv_utils: implement Hyper-V PTP source")
> Signed-off-by: Dexuan Cui <decui@...rosoft.com>
> Cc: Vitaly Kuznetsov <vkuznets@...hat.com>
> Cc: "K. Y. Srinivasan" <kys@...rosoft.com>
> Cc: Haiyang Zhang <haiyangz@...rosoft.com>
> Cc: Stephen Hemminger <sthemmin@...rosoft.com>
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> ---
>  drivers/hv/hv_util.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
> index 3042eaa..186b100 100644
> --- a/drivers/hv/hv_util.c
> +++ b/drivers/hv/hv_util.c
> @@ -590,6 +590,8 @@ static int hv_timesync_init(struct hv_util_service *srv)
>         if (!hyperv_cs)
>                 return -ENODEV;
> 
> +       spin_lock_init(&host_ts.lock);
> +
>         INIT_WORK(&wrk.work, hv_set_host_time);
> 
>         /*
> --
> 1.7.1

Greg,

Please drop this patch; I am going to resend.

K. Y