[Xen-bugs] [Bug 1164] Dom0 "BUG: soft lockup detected on CPU#0!", (ntpd?)

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1164


nenolod@xxxxxxxxxxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nenolod@xxxxxxxxxxxxxxxxx




------- Comment #7 from nenolod@xxxxxxxxxxxxxxxxx  2010-03-04 10:14 -------
This happens on backported Xen 3.4 + Debian 2.6.26-2-xen-amd64 too, the only
fix is to set clocksource to jiffies:

[115987.148841] clocksource/0: Time went backwards: ret=68bbdfc01c9e
delta=-7979216098222924866 shadow=68bbc1fece8b offset=1dc1520a
[115987.150668] BUG: soft lockup - CPU#0 stuck for 792s! [swapper:0]
[115987.150715] Modules linked in: jfs nls_base xt_tcpudp nf_conntrack_ipv4
xt_state xt_physdev iptable_filter xt_NOTRACK nf_conntrack iptable_raw
ip_tables x_tables bridge iscsi_trgt crc32c libcrc32c ipv6 sg loop serio_raw
psmouse pcspkr button i2c_nforce2 i2c_core evdev ext3 jbd mbcache dm_mod sd_mod
ata_generic sata_nv libata dock mptsas mptscsih mptbase scsi_transport_sas
scsi_mod tg3 ide_pci_generic amd74xx ide_core ehci_hcd ohci_hcd thermal
processor fan thermal_sys [last unloaded: scsi_wait_scan]
[115987.151153] CPU 0:
[115987.151196] Modules linked in: jfs nls_base xt_tcpudp nf_conntrack_ipv4
xt_state xt_physdev iptable_filter xt_NOTRACK nf_conntrack iptable_raw
ip_tables x_tables bridge iscsi_trgt crc32c libcrc32c ipv6 sg loop serio_raw
psmouse pcspkr button i2c_nforce2 i2c_core evdev ext3 jbd mbcache dm_mod sd_mod
ata_generic sata_nv libata dock mptsas mptscsih mptbase scsi_transport_sas
scsi_mod tg3 ide_pci_generic amd74xx ide_core ehci_hcd ohci_hcd thermal
processor fan thermal_sys [last unloaded: scsi_wait_scan]
[115987.152832] Pid: 0, comm: swapper Not tainted 2.6.26-2-xen-amd64 #1
[115987.152832] RIP: e030:[<ffffffff802083aa>]  [<ffffffff802083aa>]
[115987.152832] RSP: e02b:ffffffff80553f10  EFLAGS: 00000246
[115987.152832] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
ffffffff802083aa
[115987.152832] RDX: ffffffff80553f28 RSI: 0000000000000000 RDI:
0000000000000001
[115987.152832] RBP: 0000000000631918 R08: ffffffff80502fb0 R09:
ffff880001b61ee0
[115987.152832] R10: 0000000000631918 R11: 0000000000000246 R12:
ffffffffffffffff
[115987.152832] R13: ffffffff8057c580 R14: ffffffff8057d1c0 R15:
0000000000000000
[115987.152832] FS:  00007f9f8de8b6f0(0000) GS:ffffffff8053a000(0000)
knlGS:0000000000000000
[115987.152832] CS:  e033 DS: 0000 ES: 0000
[115987.152832] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[115987.152832] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[115987.152832] 
[115987.152832] Call Trace:
[115987.152832]  [<ffffffff8020e79d>] ? xen_safe_halt+0x90/0xa6
[115987.152832]  [<ffffffff8020a0c8>] ? xen_idle+0x2e/0x66
[115987.152832]  [<ffffffff80209cd6>] ? cpu_idle+0x97/0xb9
[115987.152832] 
[115987.152832] clocksource/0: Time went backwards: ret=68bbe02b46ec
delta=-7979216098215901684 shadow=68bbc1fece8b offset=1e2c7930
[115987.152832] clocksource/0: Time went backwards: ret=68bbe02caa26
delta=-7979216098215810746 shadow=68bbc1fece8b offset=1e2ddc0d
[115987.152832] clocksource/0: Time went backwards: ret=68bbe02dec28
delta=-7979216098215728312 shadow=68bbc1fece8b offset=1e2f1e19
[115987.152832] clocksource/0: Time went backwards: ret=68bbe02f075b
delta=-7979216098215655813 shadow=68bbc1fece8b offset=1e303942
[115987.152832] clocksource/0: Time went backwards: ret=68bbe030327d
delta=-7979216098215579235 shadow=68bbc1fece8b offset=1e316466
[115987.152832] clocksource/0: Time went backwards: ret=68bbe031540b
delta=-7979216098215505109 shadow=68bbc1fece8b offset=1e3285ec
[115987.152832] clocksource/0: Time went backwards: ret=68bbe0327ce1
delta=-7979216098215429119 shadow=68bbc1fece8b offset=1e33aec2
[115987.152832] clocksource/0: Time went backwards: ret=68bbe033afbb
delta=-7979216098215350565 shadow=68bbc1fece8b offset=1e34e19a
[115987.152832] clocksource/0: Time went backwards: ret=68bbe034ee62
delta=-7979216098215268990 shadow=68bbc1fece8b offset=1e362043


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