netdev - Re: [PATCH net] net/mlx4_core: Fix Oops on reboot when SRIOV VFs are probed into the Host

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Date:	Sun, 1 Jun 2014 22:59:59 +0300
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	Or Gerlitz <ogerlitz@...lanox.com>,
	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Amir Vadai <amirv@...lanox.com>,
	Wei Yang <weiyang@...ux.vnet.ibm.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>
Subject: Re: [PATCH net] net/mlx4_core: Fix Oops on reboot when SRIOV VFs are
 probed into the Host

On Sun, Jun 1, 2014 at 7:41 PM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> On 06/01/2014 02:49 PM, Or Gerlitz wrote:

>> Commit befdf89 did not take into account the case where the Host
>    Please also specify that commit's summary line in parens.

Did that below, see where we say

Fixes: befdf89 ("preserve pcd_dev_data after __mlx4_remove_one()")

>> driver is being unloaded. In this case, pci_get_drvdata for the VF
>> remove_one call may return NULL, so that dereferencing the priv
>> struct results in a kernel oops.

>> The fix is to also test that the dev pointer returned by
>> pci_get_drvdata is non-NULL.
>> Fixes: befdf89 ("preserve pcd_dev_data after __mlx4_remove_one()")
>> Signed-off-by: Jack Morgenstein <jackm@....mellanox.co.il>
>> Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
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