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Re: [linux-next:master 3615/4301] include/linux/compiler_types.h:335:45: error: call to '__compiletime_assert_314' declared with attribute error: BUILD_BUG_ON failed: sizeof(txpd->tx_dest_addr) != ETH_ALEN

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On Wed, 2021-12-01 at 08:41 -0800, Kees Cook wrote:
> 
> > >    drivers/net/wireless/marvell/libertas/tx.c:116:9: note: in expansion of macro 'BUILD_BUG_ON'
> > >      116 |         BUILD_BUG_ON(sizeof(txpd->tx_dest_addr) != ETH_ALEN);
> > >          |         ^~~~~~~~~~~~
> > 
> > Kees, can you take a look at this build error? You added the
> > BUILD_BUG_ON(), right?
> 
> I will investigate! Given this doesn't happen on allmodconfig but
> a randconfig trips it, this might be finding a legit issue, but I'll
> report back more details.
> 

It's probably some alignment thing - note it happened on a specific ARM
with a specific compiler?

But there's not really a good reason to even have the struct_group here,
we only use it as if it was

	u8 tx_dest_addr[ETH_ALEN];

anyway?

johannes



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