percpu allocation failures in kvm

From: Andy Lutomirski
Date: Fri Dec 14 2012 - 00:43:31 EST


On 3.7.0 + irrelevant patches, I get this on boot. I've seen it on
and off on earlier kernels, I think (although I'm not currently
getting it on 3.5).

[ 10.230054] PERCPU: allocation failed, size=304 align=32, alloc
from reserved chunk failed
[ 10.230059] Pid: 1026, comm: modprobe Tainted: G W 3.7.0-ama+ #5
[ 10.230060] Call Trace:
[ 10.230070] [<ffffffff81129efb>] pcpu_alloc+0x9db/0xa40
[ 10.230074] [<ffffffff810a81ad>] ? find_symbol_in_section+0x4d/0x140
[ 10.230077] [<ffffffff810a8160>] ? finished_loading+0x50/0x50
[ 10.230080] [<ffffffff810a8af0>] ? each_symbol_section+0x30/0x70
[ 10.230083] [<ffffffff810a8b61>] ? find_symbol+0x31/0x60
[ 10.230086] [<ffffffff8112a1f3>] __alloc_reserved_percpu+0x13/0x20
[ 10.230089] [<ffffffff810ab48d>] load_module+0x3ed/0x1b50
[ 10.230093] [<ffffffff81075c3b>] ? __srcu_read_unlock+0x4b/0x70

--Andy
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