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Re: [Xen-devel] Latest unstable detects cpu speed incorrectly

Subject: Re: [Xen-devel] Latest unstable detects cpu speed incorrectly
From: Valtteri Kiviniemi <valtteri.kiviniemi@xxxxxxxxxxxx>
Date: Tue, 27 Oct 2009 23:39:18 +0200
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Hi,

Compared to "nothing", just started to crash. Sometimes they boot and sometimes they dont. I did a full reboot for the server and now they are all working again without cpu spiking. The server was up only couple of days before this started, so I think that its going to start crashin in 48 hours or so.

The problem is both tsc native and emulated. If the domUs wont crash, they just start to using 400-800% cpu when just idling.

dmesg on Domain-0 is also flooding this:

"Attempting to checksum a non-TCP/UDP packet, dropping a protocol 1 packet"

- Valtteri Kiviniemi

Jeremy Fitzhardinge kirjoitti:
On 10/27/09 09:34, Valtteri Kiviniemi wrote:
Hi,

Now they are crashing on bootup:

"Now" compared to what?  Is this still related to tsc_native?

    J

general protection fault: 0000 [#1] SMP
last sysfs file:
CPU 0
Pid: 1, comm: swapper Not tainted 2.6.31.4-domU-00396-g9cf89da #15
RIP: e030:[<ffffffff8119e25f>]  [<ffffffff8119e25f>] strcmp+0x7/0x19
RSP: e02b:ffff88001f83be58  EFLAGS: 00010246
RAX: 0000000000000073 RBX: ffff88001fa1eb90 RCX: ffff88001fa1eb73
RDX: 0000000000000000 RSI: 0000b67d64d2a30e RDI: ffff88001f806900
RBP: 0000b67d64d2a30e R08: 0000000000000001 R09: ffffffff813c37c8
R10: ffffffff8100e072 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff81402030 R14: ffffffff8143f6a0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffffc90000000000(0000)
knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000000001001000 CR4: 0000000000002660
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 1, threadinfo ffff88001f83a000, task
ffff88001f858000)
Stack:
 ffffffff810c7e84 ffffffff8100e072 ffff88001fa1eb40 0000b67d64d2a30e
<0> ffffffff810c6dc5 ffff88001fa1eb40 0000000000000000 0000000000000000
<0> 0000000000000000 0000b67d64d2a30e 00000000000274b2 0000000000000000
Call Trace:
 [<ffffffff810c7e84>] ? sysfs_find_dirent+0x1b/0x2f
 [<ffffffff8100e072>] ? check_events+0x12/0x20
 [<ffffffff810c6dc5>] ? sysfs_hash_and_remove+0x29/0x59
 [<ffffffff8107cecd>] ? sysfs_slab_alias+0x25/0x81
 [<ffffffff81431a7d>] ? slab_sysfs_init+0xb6/0xe9
 [<ffffffff814319c7>] ? slab_sysfs_init+0x0/0xe9
 [<ffffffff8100a051>] ? do_one_initcall+0x50/0x151
 [<ffffffff8141fb20>] ? kernel_init+0x14b/0x1a1
 [<ffffffff810112aa>] ? child_rip+0xa/0x20
 [<ffffffff810104ac>] ? int_ret_from_sys_call+0x7/0x1b
 [<ffffffff81010c5d>] ? retint_restore_args+0x5/0x6
 [<ffffffff810112a0>] ? child_rip+0x0/0x20
Code: f8 eb 10 48 ff c1 49 ff c0 4c 39 c2 75 08 c6 01 00 eb 0d 45 31
c0 42 8a 04 06 88 01 84 c0 75 e3 48 89 f8 c3 31 d2 8a 0c 17 88 c8 <2a>
04 16 84 c0 75 07 48 ff c2 84 c9 75 ed 0f be c0 c3 31 c9 eb
RIP  [<ffffffff8119e25f>] strcmp+0x7/0x19
 RSP <ffff88001f83be58>
---[ end trace a7919e7f17c0a725 ]---
Kernel panic - not syncing: Attempted to kill init!
Pid: 1, comm: swapper Tainted: G D 2.6.31.4-domU-00396-g9cf89da #15
Call Trace:
 [<ffffffff812b4993>] ? panic+0x86/0x12e
 [<ffffffff812b6919>] ? _spin_lock_irq+0x7/0x1c
 [<ffffffff811a5e20>] ? dummycon_dummy+0x0/0x3
 [<ffffffff811a5e20>] ? dummycon_dummy+0x0/0x3
 [<ffffffff8100d9bd>] ? xen_force_evtchn_callback+0x9/0xa
 [<ffffffff8100e072>] ? check_events+0x12/0x20
 [<ffffffff811a5e20>] ? dummycon_dummy+0x0/0x3
 [<ffffffff812b6995>] ? _write_lock_irq+0x7/0x16
 [<ffffffff8103b2bd>] ? exit_ptrace+0xa7/0x126
 [<ffffffff81036605>] ? do_exit+0x6a/0x5ce
 [<ffffffff8100e072>] ? check_events+0x12/0x20
 [<ffffffff81013eb1>] ? oops_end+0x8e/0x93
 [<ffffffff812b6d45>] ? general_protection+0x25/0x30
 [<ffffffff8100e072>] ? check_events+0x12/0x20
 [<ffffffff8119e25f>] ? strcmp+0x7/0x19
 [<ffffffff810c7e84>] ? sysfs_find_dirent+0x1b/0x2f
 [<ffffffff8100e072>] ? check_events+0x12/0x20
 [<ffffffff810c6dc5>] ? sysfs_hash_and_remove+0x29/0x59
 [<ffffffff8107cecd>] ? sysfs_slab_alias+0x25/0x81
 [<ffffffff81431a7d>] ? slab_sysfs_init+0xb6/0xe9
 [<ffffffff814319c7>] ? slab_sysfs_init+0x0/0xe9
 [<ffffffff8100a051>] ? do_one_initcall+0x50/0x151
 [<ffffffff8141fb20>] ? kernel_init+0x14b/0x1a1
 [<ffffffff810112aa>] ? child_rip+0xa/0x20
 [<ffffffff810104ac>] ? int_ret_from_sys_call+0x7/0x1b
 [<ffffffff81010c5d>] ? retint_restore_args+0x5/0x6
 [<ffffffff810112a0>] ? child_rip+0x0/0x20



- Valtteri Kiviniemi

Valtteri Kiviniemi kirjoitti:
Hi,

It was downloaded and compiled on 2009-10-26 00:48 GMT+2. Kernel
version is 2.6.31.4-dom0-00396-g9cf89da.

- Valtteri Kiviniemi

Keir Fraser kirjoitti:
On 27/10/2009 16:14, "Valtteri Kiviniemi"
<valtteri.kiviniemi@xxxxxxxxxxxx>
wrote:

I'll take that back, now its occuring in every virtual.
Yes it didn't sound like it would really be TSC related. How
'latest' is
your xen-unstable?

 -- Keir



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