linux-kernel - 2.6.27-rc6 xen soft lockup

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Message-ID: <48C7BB39.6090700@xs4all.nl>
Date:	Wed, 10 Sep 2008 14:19:05 +0200
From:	Rambaldi <rambaldi@...all.nl>
To:	linux-kernel <linux-kernel@...r.kernel.org>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: 2.6.27-rc6 xen soft lockup

Hi,

I got the following bug while running the 2.6.27-rc6 kernel as a 64 bit domU:


BUG: soft lockup - CPU#1 stuck for 4125s! [swapper:0]
Modules linked in: sit ts_bm xt_string ipt_LOG xt_limit iptable_filter iptable_nat nf_nat nf_conntrack_ipv4 ip_tables 
nf_conntrack_ipv6 xt_state nf_conntrack xt_tcpudp ip6table_filter ip6_tables x_tables usbcore nfsd lockd auth_rpcgss 
sunrpc exportfs reiserfs ipv6
CPU 1:
Modules linked in: sit ts_bm xt_string ipt_LOG xt_limit iptable_filter iptable_nat nf_nat nf_conntrack_ipv4 ip_tables 
nf_conntrack_ipv6 xt_state nf_conntrack xt_tcpudp ip6table_filter ip6_tables x_tables usbcore nfsd lockd auth_rpcgss 
sunrpc exportfs reiserfs ipv6
Pid: 0, comm: swapper Not tainted 2.6.27-rc6 #2
RIP: e030:[<ffffffff802093aa>]  [<ffffffff802093aa>] _stext+0x3aa/0x1000
RSP: e02b:ffff8800f0869f28  EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff802093aa
RDX: ffff8800f0868000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff880001542478
R10: ffff8800f0a27e90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fe2c6a8a710(0000) GS:ffff8800f084cec0(0000) knlGS:0000000000000000
CS:  e033 DS: 002b ES: 002b CR0: 000000008005003b
CR2: 00007fe2c6aab000 CR3: 00000000cc292000 CR4: 0000000000002620
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400

Call Trace:
  [<ffffffff803f9a39>] unix_poll+0x0/0xa4
  [<ffffffff8020a533>] xen_safe_halt+0xc/0x15
  [<ffffffff8020b953>] xen_idle+0x33/0x48
  [<ffffffff8020e883>] cpu_idle+0x45/0x63


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