Hello
Once or twice a day I get a kernel trace in dom0 like this.
Aug 1 05:52:08 zeus kernel: INFO: rcu_bh self-detected stall on CPU { 3}
(t=0 jiffies)
Aug 1 05:52:08 zeus kernel: Pid: 0, comm: swapper/3 Not tainted
3.4.7-4-xen #1
Aug 1 05:52:08 zeus kernel: Call Trace:
Aug 1 05:52:08 zeus kernel: <IRQ> [<ffffffff81096841>] ?
__rcu_pending+0x1a1/0x4b0
Aug 1 05:52:08 zeus kernel: [<ffffffff8106f150>] ?
tick_init_highres+0x10/0x10
Aug 1 05:52:08 zeus kernel: [<ffffffff8109771b>] ?
rcu_check_callbacks+0xbb/0xd0
Aug 1 05:52:08 zeus kernel: [<ffffffff81042c9f>] ?
update_process_times+0x3f/0x80
Aug 1 05:52:08 zeus kernel: [<ffffffff8106f1a4>] ?
tick_sched_timer+0x54/0x130
Aug 1 05:52:08 zeus kernel: [<ffffffff81055469>] ?
__run_hrtimer.isra.34+0x59/0xf0
Aug 1 05:52:08 zeus kernel: [<ffffffff81055aac>] ?
hrtimer_interrupt+0xec/0x230
Aug 1 05:52:08 zeus kernel: [<ffffffff81006caa>] ?
xen_timer_interrupt+0x2a/0x1a0
Aug 1 05:52:08 zeus kernel: [<ffffffff810422b3>] ? cascade+0x73/0x90
Aug 1 05:52:08 zeus kernel: [<ffffffff81090fea>] ?
handle_irq_event_percpu+0x3a/0x150
Aug 1 05:52:08 zeus kernel: [<ffffffff8109403f>] ?
handle_percpu_irq+0x3f/0x70
Aug 1 05:52:08 zeus kernel: [<ffffffff8103d23d>] ?
__do_softirq+0xbd/0x130
Aug 1 05:52:08 zeus kernel: [<ffffffff811f35f4>] ?
__xen_evtchn_do_upcall+0x194/0x240
Aug 1 05:52:08 zeus kernel: [<ffffffff811f55f2>] ?
xen_evtchn_do_upcall+0x22/0x40
Aug 1 05:52:08 zeus kernel: [<ffffffff813244ee>] ?
xen_do_hypervisor_callback+0x1e/0x30
Aug 1 05:52:08 zeus kernel: <EOI> [<ffffffff810013aa>] ?
hypercall_page+0x3aa/0x1000
Aug 1 05:52:08 zeus kernel: [<ffffffff810013aa>] ?
hypercall_page+0x3aa/0x1000
Aug 1 05:52:08 zeus kernel: [<ffffffff81006afc>] ? xen_safe_halt+0xc/0x20
Aug 1 05:52:08 zeus kernel: [<ffffffff81012453>] ? default_idle+0x23/0x40
Aug 1 05:52:08 zeus kernel: [<ffffffff81012e86>] ? cpu_idle+0xa6/0xc0
Im am using a HP DL585 G2 running openSuse 12.1.
zeus:~ # xm info
host : zeus
release : 3.4.7-4-xen
version : #1 SMP Mon Jul 30 15:31:08 CEST 2012
machine : x86_64
nr_cpus : 8
nr_nodes : 4
cores_per_socket : 2
threads_per_core : 1
cpu_mhz : 2612
hw_caps :
178bf3ff:ebc3fbff:00000000:00000010:00002001:00000000:0000001f:00000000
virt_caps : hvm
total_memory : 24572
free_memory : 14810
free_cpus : 0
max_free_memory : 14810
max_para_memory : 14806
max_hvm_memory : 14763
xen_major : 4
xen_minor : 1
xen_extra : .2_17-199.1
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset : 23174
xen_commandline : dom0_mem=max:768M
cc_compiler : gcc version 4.6.2 (SUSE Linux)
cc_compile_by : abuild
cc_compile_domain :
cc_compile_date : Tue Jul 10 14:09:23 UTC 2012
xend_config_format : 4
zeus:~ # xm dmesg
__ __ _ _ _ ____ _ _____ _ ___ ___ _
\ \/ /___ _ __ | || | / | |___ \ / |___ |/ |/ _ \ / _ \ / |
\ // _ \ ''_ \ | || |_ | | __) | | | / /_| | (_) | (_) || |
/ \ __/ | | | |__ _|| |_ / __/ | | / /__| |\__, |\__, || |
/_/\_\___|_| |_| |_|(_)_(_)_____|___|_|/_/ |_| /_/ /_(_)_|
|_____|
(XEN) Xen version 4.1.2_17-199.1 (abuild@) (gcc version 4.6.2 (SUSE Linux)
) Tue Jul 10 14:09:23 UTC 2012
(XEN) Latest ChangeSet: 23174
(XEN) Bootloader: GNU GRUB 0.97
(XEN) Command line: dom0_mem=max:768M
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: V2; EDID transfer time: 2 seconds
(XEN) Disc information:
(XEN) Found 1 MBR signatures
(XEN) Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 000000000009f400 (usable)
(XEN) 000000000009f400 - 00000000000a0000 (reserved)
(XEN) 00000000000f0000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 000000007fd4e000 (usable)
(XEN) 000000007fd4e000 - 000000007fd56000 (ACPI data)
(XEN) 000000007fd56000 - 000000007fd57000 (usable)
(XEN) 000000007fd57000 - 0000000080000000 (reserved)
(XEN) 00000000e0000000 - 00000000f0000000 (reserved)
(XEN) 00000000fec00000 - 00000000fed00000 (reserved)
(XEN) 00000000fee00000 - 00000000fee10000 (reserved)
(XEN) 00000000ffc00000 - 0000000100000000 (reserved)
(XEN) 0000000100000000 - 000000067ffff000 (usable)
(XEN) ACPI: RSDP 000F4F00, 0024 (r2 HP )
(XEN) ACPI: XSDT 7FD4ED80, 0074 (r1 HP ProLiant 2 Ò 162E)
(XEN) ACPI: FACP 7FD4EE00, 00F4 (r3 HP A07 2 Ò 162E)
(XEN) ACPI: DSDT 7FD4EF00, 4A6D (r1 HP DSDT 1 INTL 20030228)
(XEN) ACPI: FACS 7FD4E100, 0040
(XEN) ACPI: SPCR 7FD4E140, 0050 (r1 HP SPCRRBSU 1 Ò 162E)
(XEN) ACPI: HPET 7FD4E1C0, 0038 (r1 HP ProLiant 2 Ò 162E)
(XEN) ACPI: SPMI 7FD4E200, 0040 (r5 HP ProLiant 1 Ò 162E)
(XEN) ACPI: ERST 7FD4E240, 01D0 (r1 HP ProLiant 1 Ò 162E)
(XEN) ACPI: APIC 7FD4E440, 00C6 (r1 HP ProLiant 2 0)
(XEN) ACPI: SRAT 7FD4E600, 01A0 (r1 AMD FAM_F_10 2 AMD 1)
(XEN) ACPI: FFFF 7FD4EA00, 0176 (r1 HP ProLiant 1 Ò 162E)
(XEN) ACPI: BERT 7FD4EB80, 0030 (r1 HP ProLiant 1 Ò 162E)
(XEN) ACPI: HEST 7FD4EBC0, 0170 (r1 HP ProLiant 1 Ò 162E)
(XEN) System RAM: 24572MB (25162676kB)
(XEN) Domain heap initialised DMA width 31 bits
(XEN) Processor #0 15:1 APIC version 16
(XEN) Processor #2 15:1 APIC version 16
(XEN) Processor #4 15:1 APIC version 16
(XEN) Processor #6 15:1 APIC version 16
(XEN) Processor #1 15:1 APIC version 16
(XEN) Processor #3 15:1 APIC version 16
(XEN) Processor #5 15:1 APIC version 16
(XEN) Processor #7 15:1 APIC version 16
(XEN) IOAPIC[0]: apic_id 8, version 17, address 0xd9af0000, GSI 0-23
(XEN) IOAPIC[1]: apic_id 9, version 17, address 0xd9fd0000, GSI 24-30
(XEN) IOAPIC[2]: apic_id 10, version 17, address 0xd9fe0000, GSI 31-37
(XEN) IOAPIC[3]: apic_id 11, version 17, address 0xd9ff0000, GSI 38-61
(XEN) Enabling APIC mode: Flat. Using 4 I/O APICs
(XEN) ERST table is invalid
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2612.090 MHz processor.
(XEN) Initing memory sharing.
(XEN) AMD-Vi: IOMMU not found!
(XEN) I/O virtualisation disabled
(XEN) ENABLING IO-APIC IRQs
(XEN) -> Using new ACK method
(XEN) Platform timer is 25.000MHz HPET
(XEN) Allocated console ring of 16 KiB.
(XEN) HVM: ASIDs disabled.
(XEN) SVM: Supported advanced features:
(XEN) - none
(XEN) HVM: SVM enabled
(XEN) AMD: Disabling C1 Clock Ramping Node #0
(XEN) AMD: Disabling C1 Clock Ramping Node #1
(XEN) AMD: Disabling C1 Clock Ramping Node #2
(XEN) AMD: Disabling C1 Clock Ramping Node #3
(XEN) Brought up 8 CPUs
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Xen kernel: 64-bit, lsb, compat32
(XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1a01000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN) Dom0 alloc.: 000000043c000000->000000043e000000 (182523 pages to
be allocated)
(XEN) Init. ramdisk: 000000067e6fb000->000000067fdffa00
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN) Loaded kernel: ffffffff81000000->ffffffff81a01000
(XEN) Init. ramdisk: ffffffff81a01000->ffffffff83105a00
(XEN) Phys-Mach map: ffffffff83106000->ffffffff83286000
(XEN) Start info: ffffffff83286000->ffffffff832864b4
(XEN) Page tables: ffffffff83287000->ffffffff832a4000
(XEN) Boot stack: ffffffff832a4000->ffffffff832a5000
(XEN) TOTAL: ffffffff80000000->ffffffff83400000
(XEN) ENTRY ADDRESS: ffffffff81496200
(XEN) Dom0 has maximum 8 VCPUs
(XEN) Scrubbing Free RAM:
..........................................................................................................................................................................................................................................done.
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type ''CTRL-a'' three times
to switch input
to Xen)
(XEN) Freed 232kB init memory.
(XEN) traps.c:2527:d0 Domain attempted WRMSR 00000000c0010004 from
0x0000d6be5955d450 to 0x000000000000abcd.
(XEN) physdev.c:159: dom0: wrong map_pirq type 3
(XEN) traps.c:2527:d1 Domain attempted WRMSR 00000000c0010004 from
0x0000d6be5955d450 to 0x000000000000abcd.
(XEN) traps.c:2527:d2 Domain attempted WRMSR 00000000c0010004 from
0x0000a5bc3314d6f8 to 0x000000000000abcd.
(XEN) traps.c:2527:d3 Domain attempted WRMSR 00000000c0010004 from
0x000092bdbb01c033 to 0x000000000000abcd.
(XEN) traps.c:2527:d4 Domain attempted WRMSR 00000000c0010004 from
0x000095bff892b9bd to 0x000000000000abcd.
There are some linux guests (running kernel 3.4.6) and Windows systems. I
don''t see any problems in
the guest logs at these moments.
Anybody else has these problems too?
regards
Thomas