linux-kernel - Re: linux-next: build failure after merge of the final tree (net-next tree related)

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Message-ID: <alpine.DEB.2.02.1304231639490.6938@chino.kir.corp.google.com>
Date:	Tue, 23 Apr 2013 16:44:33 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Patrick McHardy <kaber@...sh.net>
cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build failure after merge of the final tree (net-next
 tree related)

On Tue, 23 Apr 2013, Stephen Rothwell wrote:

> Hi all,
> 
> After merging the final tree, today's linux-next build (powerpc
> allyesconfig) failed like this:
> 
> net/netlink/af_netlink.c: In function 'netlink_frame_flush_dcache':
> net/netlink/af_netlink.c:384:40: error: 'NL_MMAP_MSG_HDRLEN' undeclared (first use in this function)
> 
> Caused by commit 9652e931e73b ("netlink: add mmap'ed netlink helper
> functions").  This needed to be build tested on an architecture that has
> ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE set to 1 (like Sparc :-)).
> 

Hijacking this thread since I didn't see the causing patch to be posted to 
lkml.  From linux-next:

net/netlink/af_netlink.c: In function 'netlink_queue_mmaped_skb':
net/netlink/af_netlink.c:663:14: error: incompatible types when assigning to type '__u32' from type 'kuid_t'
net/netlink/af_netlink.c:664:14: error: incompatible types when assigning to type '__u32' from type 'kgid_t'
net/netlink/af_netlink.c: In function 'netlink_ring_set_copied':
net/netlink/af_netlink.c:693:14: error: incompatible types when assigning to type '__u32' from type 'kuid_t'
net/netlink/af_netlink.c:694:14: error: incompatible types when assigning to type '__u32' from type 'kgid_t'

for a config with CONFIG_UIDGID_STRICT_TYPE_CHECKS enabled.

Looks like it's coming from f9c2288837ba ("netlink: implement memory 
mapped recvmsg()").  Patrick?
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