linux-kernel - Re: linux-next: build warning after merge of the net-next tree

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Date:   Tue, 15 Nov 2016 16:56:05 -0800
From:   Martin KaFai Lau <kafai@...com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
CC:     David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>,
        <linux-next@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build warning after merge of the net-next tree

On Wed, Nov 16, 2016 at 11:36:47AM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the net-next tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
>
> kernel/bpf/bpf_lru_list.c: In function '__bpf_lru_list_rotate_inactive.isra.3':
> kernel/bpf/bpf_lru_list.c:201:28: warning: 'next' may be used uninitialized in this function [-Wmaybe-uninitialized]
>   l->next_inactive_rotation = next;
>                             ^
>
> Introduced by commit
>
>   3a08c2fd7634 ("bpf: LRU List")
>
> I can't tell if this is a false positive or not.
A false positive.

A patch has been posted: https://patchwork.ozlabs.org/patch/695202/

Thanks for the report.
--Martin