Thanks for the quick response :)
Il 22/10/2010 10:52, Ian Campbell ha scritto:
Thanks, I was just about to send you a rant about the lack of content in
the bug ;-)
my bad, first time using bugreport :) I posted again shortly after with
the lacking logs ;)
On Fri, 2010-10-22 at 09:54 +0200, Tecnici wrote:
Hello there, with versions above 2.6.32-23 of
xen-linux-system-2.6.32-5-xen-amd64 (we tried *-25 and *-26) we found
the following bug:
Does the problem occur with -25/-26 when it is used in the dom0 or the
domU or both?
We only use paravirtualized guests so I guess we can say both since we
use the same kernel for dom0 and domU
Do you get any output on the domU console corresponding with the
migration attempt? (perhaps increase log level with "echo 9
/proc/sysrq-trigger" before the suspend attempt)
we just tried and the domU gave this output on its console:
[ 151.400005] BUG: soft lockup - CPU#0 stuck for 61s! [xenwatch:12]
[ 151.400005] Modules linked in: ext3 jbd mbcache dm_mod raid1 md_mod
xen_netfront xen_blkfront
[ 151.400005] CPU 0:
[ 151.400005] Modules linked in: ext3 jbd mbcache dm_mod raid1 md_mod
xen_netfront xen_blkfront
[ 151.400005] Pid: 12, comm: xenwatch Not tainted 2.6.32-5-xen-amd64 #1
[ 151.400005] RIP: e030:[<ffffffff810686d5>] [<ffffffff810686d5>]
lock_hrtimer_base+0xa/0x3c
[ 151.400005] RSP: e02b:ffff88003fe11d70 EFLAGS: 00000246
[ 151.400005] RAX: ffff880002a40680 RBX: 0000000000000000 RCX:
0000000000000006
[ 151.400005] RDX: ffff88003db31c50 RSI: ffff88003fe11da0 RDI:
ffff880002a47820
[ 151.400005] RBP: ffff880002a47820 R08: 0000000000000000 R09:
0000000000000000
[ 151.400005] R10: ffff88003db2e050 R11: ffffffff8122b649 R12:
ffff88003fe11da0
[ 151.400005] R13: 0000000000000002 R14: ffff88003db31ca0 R15:
ffff88003fe11df0
[ 151.400005] FS: 00007f6840bc96e0(0000) GS:ffff880003557000(0000)
knlGS:0000000000000000
[ 151.400005] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 151.400005] CR2: 00007fc98d3e7000 CR3: 000000003eef3000 CR4:
0000000000000660
[ 151.400005] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 151.400005] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 151.400005] Call Trace:
[ 151.400005] [<ffffffff8106875b>] ? hrtimer_try_to_cancel+0x16/0x43
[ 151.400005] [<ffffffff8122b649>] ? serial8250_suspend+0x0/0x48
[ 151.400005] [<ffffffff81068794>] ? hrtimer_cancel+0xc/0x16
[ 151.400005] [<ffffffffa0009147>] ? netfront_suspend+0x19/0x1d
[xen_netfront]
[ 151.400005] [<ffffffff811f569b>] ? xenbus_dev_suspend+0x1f/0x3b
[ 151.400005] [<ffffffff81233872>] ? dpm_suspend_start+0x359/0x45b
[ 151.400005] [<ffffffff811f2ca0>] ? shutdown_handler+0x15f/0x25c
[ 151.400005] [<ffffffff8130b475>] ? mutex_lock+0xd/0x31
[ 151.400005] [<ffffffff811f47ad>] ? xenwatch_thread+0x117/0x14a
[ 151.400005] [<ffffffff81065afe>] ? autoremove_wake_function+0x0/0x2e
[ 151.400005] [<ffffffff811f4696>] ? xenwatch_thread+0x0/0x14a
[ 151.400005] [<ffffffff81065831>] ? kthread+0x79/0x81
[ 151.400005] [<ffffffff81012baa>] ? child_rip+0xa/0x20
[ 151.400005] [<ffffffff81011d61>] ? int_ret_from_sys_call+0x7/0x1b
[ 151.400005] [<ffffffff8101251d>] ? retint_restore_args+0x5/0x6
[ 151.400005] [<ffffffff81012ba0>] ? child_rip+0x0/0x20
We cannot suspend any domU machine so migration and save are broken,
because they both use the suspension. On /var/log/xen/xend.log I have:
[snip, thanks]
reverting to 2.6.32-23 made the suspension work again
I didn't think much changed xen-wise between these two intervals but I
will check. I assume that the versions of xen-hypervisor* and xen-utils* have
not
changed?
Ian.
You assume right :) we only upgraded the kernel
cheers
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