Re: BUG: sleeping function called from invalid context atmm/slub.c:793

From: Christoph Lameter
Date: Mon Jan 10 2011 - 11:52:16 EST



On Mon, 10 Jan 2011, Kirill A. Shutemov wrote:

> Every time I run qemu with KVM enabled I get this in dmesg:
>
> [ 182.878328] BUG: sleeping function called from invalid context at mm/slub.c:793
> [ 182.878339] in_atomic(): 1, irqs_disabled(): 0, pid: 4992, name: qemu
> [ 182.878355] Pid: 4992, comm: qemu Not tainted 2.6.37+ #31
> [ 182.878361] Call Trace:
> [ 182.878381] [<c104e317>] ? __might_sleep+0xd0/0xd7
> [ 182.878394] [<c10ec337>] ? slab_pre_alloc_hook.clone.39+0x23/0x27
> [ 182.878404] [<c10ece27>] ? kmem_cache_alloc+0x22/0xc8
> [ 182.878414] [<c1030221>] ? init_fpu+0x44/0x7b

fpu_alloc() does call kmem_cache_alloc with GFP_KERNEL although we are in
an atomic context.
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