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Re: [PATCH] Don't attach callback to a going-away netlink socket [message #12049 is a reply to message #12046]

Mon, 16 April 2007 12:55

Patrick McHardy
Messages: 107
Registered: March 2006

Senior Member

Pavel Emelianov wrote:
> Patrick McHardy wrote:
>
>>>There is a race between netlink_dump_start() and netlink_release()
>>>that can lead to the situation when a netlink socket with non-zero
>>>callback is freed.
>>
>>
>>Can you describe the race in more detail please?
>>
>
> Here it is:
>
> [...]
> The proposal it to make sock_orphan before detaching the callback
> in netlink_release() and to check for the sock to be SOCK_DEAD in
> netlink_dump_start() before setting a new callback.

Thanks, good catch. Your patch also looks good.

Acked-by: Patrick McHardy <kaber@trash.net>

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[Message index]

		[PATCH] Don't attach callback to a going-away netlink socket By: xemul on Mon, 16 April 2007 11:34
		Re: [PATCH] Don't attach callback to a going-away netlink socket By: Patrick McHardy on Mon, 16 April 2007 11:41
		Re: [PATCH] Don't attach callback to a going-away netlink socket By: xemul on Mon, 16 April 2007 11:53
		Re: [PATCH] Don't attach callback to a going-away netlink socket By: Patrick McHardy on Mon, 16 April 2007 12:55
		Re: [PATCH] Don't attach callback to a going-away netlink socket By: James Morris on Mon, 16 April 2007 12:37

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