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From: Michael Kelley <mikelley@microsoft.com>
To: KY Srinivasan <kys@microsoft.com>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
	"olaf@aepfle.de" <olaf@aepfle.de>,
	"apw@canonical.com" <apw@canonical.com>,
	"jasowang@redhat.com" <jasowang@redhat.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	vkuznets <vkuznets@redhat.com>
Cc: Dexuan Cui <decui@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	"Stable@vger.kernel.org" <Stable@vger.kernel.org>
Subject: RE: [PATCH V2 3/5] Drivers: hv: kvp: Fix the recent regression caused by incorrect clean-up
Date: Wed, 24 Oct 2018 15:37:49 +0000	[thread overview]
Message-ID: <CY4PR21MB077329FE239A11054FFDD661D7F60@CY4PR21MB0773.namprd21.prod.outlook.com> (raw)
In-Reply-To: <20181018050932.27932-3-kys@linuxonhyperv.com>

From: kys@linuxonhyperv.com <kys@linuxonhyperv.com>  Sent: Wednesday, October 17, 2018 10:10 PM
> From: Dexuan Cui <decui@microsoft.com>
> 
> In kvp_send_key(), we do need call process_ib_ipinfo() if
> message->kvp_hdr.operation is KVP_OP_GET_IP_INFO, because it turns out
> the userland hv_kvp_daemon needs the info of operation, adapter_id and
> addr_family. With the incorrect fc62c3b1977d, the host can't get the
> VM's IP via KVP.
> 
> And, fc62c3b1977d added a "break;", but actually forgot to initialize
> the key_size/value in the case of KVP_OP_SET, so the default key_size of
> 0 is passed to the kvp daemon, and the pool files
> /var/lib/hyperv/.kvp_pool_* can't be updated.
> 
> This patch effectively rolls back the previous fc62c3b1977d, and
> correctly fixes the "this statement may fall through" warnings.
> 
> This patch is tested on WS 2012 R2 and 2016.
> 
> Fixes: fc62c3b1977d ("Drivers: hv: kvp: Fix two "this statement may fall through" warnings")
> Signed-off-by: Dexuan Cui <decui@microsoft.com>
> Cc: K. Y. Srinivasan <kys@microsoft.com>
> Cc: Haiyang Zhang <haiyangz@microsoft.com>
> Cc: Stephen Hemminger <sthemmin@microsoft.com>
> Cc: <Stable@vger.kernel.org>
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> ---
>  drivers/hv/hv_kvp.c | 26 ++++++++++++++++++++++----
>  1 file changed, 22 insertions(+), 4 deletions(-)
> 
Reviewed-by: Michael Kelley <mikelley@microsoft.com>

  reply	other threads:[~2018-10-24 15:37 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-18  5:08 [PATCH V2 0/5] Drivers: hv: Miscellaneous fixes kys
2018-10-18  5:09 ` [PATCH V2 1/5] Drivers: hv: vmbus: Get rid of unnecessary state in hv_context kys
2018-10-18  5:09   ` [PATCH V2 2/5] hv_utils: update name in struct hv_driver util_drv kys
2018-10-18  5:09   ` [PATCH V2 3/5] Drivers: hv: kvp: Fix the recent regression caused by incorrect clean-up kys
2018-10-24 15:37     ` Michael Kelley [this message]
2018-10-31 23:23       ` Dexuan Cui
2018-11-01 18:56         ` gregkh
2018-11-01 19:22           ` Dexuan Cui
2018-11-02  4:54             ` gregkh
2018-11-11  4:18               ` Dexuan Cui
2018-11-11 17:09                 ` gregkh
2018-11-02 21:55           ` KY Srinivasan
2018-11-01 19:38     ` Haiyang Zhang
2018-10-18  5:09   ` [PATCH V2 4/5] Drivers: hv: kvp: Use %u to print U32 kys
2018-10-18  5:09   ` [PATCH V2 5/5] Tools: hv: kvp: Fix a warning of buffer overflow with gcc 8.0.1 kys
2018-10-18  6:32     ` Dan Carpenter
2018-10-18 15:08       ` David Laight
2018-10-24 15:04   ` [PATCH V2 1/5] Drivers: hv: vmbus: Get rid of unnecessary state in hv_context Michael Kelley

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