netdev - Re: fib_hash removal

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Date:	Thu, 15 Mar 2007 08:40:46 +0100
From:	Jarek Poplawski <jarkao2@...pl>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	Robert.Olsson@...a.slu.se, tgr@...g.ch
Subject: Re: fib_hash removal

On 14-03-2007 23:49, Patrick McHardy wrote:
...
> I noticed this a couple of times, but didn't manage to look
> into it yet:
> 
> BUG: sleeping function called from invalid context at mm/slab.c:3032
> in_atomic():1, irqs_disabled():0
> no locks held by ip/14309.
> 
> Call Trace:
>  [<ffffffff810956e9>] debug_show_held_locks+0x9/0xb
>  [<ffffffff8100b0b0>] __might_sleep+0xd9/0xdb
>  [<ffffffff8100f745>] __kmalloc_track_caller+0x67/0x10f
>  [<ffffffff810aaff1>] __kzalloc+0x15/0x2f
>  [<ffffffff811fc5a5>] tnode_new+0x55/0x122

tnode_alloc() uses GFP_KERNEL ...

>  [<ffffffff811fcc88>] resize+0x616/0x966
>  [<ffffffff811d2e08>] nlmsg_notify+0x43/0x6f
>  [<ffffffff811fd074>] trie_rebalance+0x9c/0xef
>  [<ffffffff811fd231>] trie_leaf_remove+0x16a/0x1c2

... but we have preempt_disable() here.

Regards,
Jarek P.
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