From: Justin Dossey <jbd@justindossey.com>
To: kvm@vger.kernel.org
Subject: Linux x86 guest panics in skb_copy_bits
Date: Sun, 3 May 2009 11:40:47 -0700 [thread overview]
Message-ID: <ce02da610905031140w76c44964sac142c1965621e98@mail.gmail.com> (raw)
Hi all,
I have a pretty straightforward setup.
Hypervisor:
dual xeon e5205 running Gentoo Linux
kernel 2.6.27 with virtio devices enabled
kvm 84
libvirt 0.5.1
Guest:
32-bit, virtio for nic and disk, qcow2.
Linux 2.6.28.
Network is bridged using tap and brctl.
I'm running Apache on the guest. Whenever I send enough data through
the virtual NIC, I get a panic in skb_copy_bits. I've tried using the
e1000 driver instead of the virtio one, but that makes no difference.
Has anyone else seen this behavior before? I got this on 2.6.27 and 2.6.28.
Here's a snippet:
[280204.340016] [<c02253e2>] panic+0x4e/0xea
[280204.340016] [<c05906b9>] oops_end+0x8f/0xa3
[280204.340016] [<c0204e94>] die+0x57/0x5f
[280204.340016] [<c0592192>] do_page_fault+0x605/0x6bc
[280204.340016] [<c059010d>] ? _spin_lock+0x15/0x18
[280204.340016] [<c04bfad8>] ? __qdisc_run+0xe6/0x1a7
[280204.340016] [<c0591b8d>] ? do_page_fault+0x0/0x6bc
[280204.340016] [<c0590482>] error_code+0x72/0x78
[280204.340016] [<c04ace8c>] ? skb_copy_bits+0x4f/0x1c4
[280204.340016] [<c0215864>] ? kvm_set_pte+0x26/0x29
[280204.340016] [<c054889c>] xdr_skb_read_bits+0x1f/0x37
[280204.340016] [<c054872b>] xdr_partial_copy_from_skb+
0x117/0x16c
[280204.340016] [<c0549ec4>] xs_tcp_data_recv+0x245/0x3de
[280204.340016] [<c054887d>] ? xdr_skb_read_bits+0x0/0x37
[280204.340016] [<c04e07d6>] tcp_read_sock+0x8c/0x1e2
[280204.340016] [<c0549c7f>] ? xs_tcp_data_recv+0x0/0x3de
[280204.340016] [<c054a5d1>] xs_tcp_data_ready+0x54/0x64
[280204.340016] [<c04e9469>] tcp_rcv_established+0x524/0x7b7
[280204.340016] [<c04ee4b2>] tcp_v4_do_rcv+0x173/0x2dc
--
Justin Dossey
next reply other threads:[~2009-05-03 18:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-03 18:40 Justin Dossey [this message]
2009-05-04 22:40 ` Linux x86 guest panics in skb_copy_bits Marcelo Tosatti
[not found] ` <ce02da610905051529w23a72a54m33218d998a36e5d0@mail.gmail.com>
2009-05-06 23:35 ` Justin Dossey
2009-05-07 0:16 ` Marcelo Tosatti
2009-05-11 17:57 ` Justin Dossey
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