Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
Here's some debugging output. I booted domU with an older kernel to be able to
install
On opensuse dom0 I ran
sudo gdbserver-xen 127.0.0.1: --attach 37
where 37 is domid printed by xm list and then used
sudo gdb /local/lindi/vmlinux-2.6.32-5-amd64
(gdb) target remote 127.0.0.1:
to start the debugger. It seems that the kernel is stuck trying to
print information about a kernel OOPS:
(gdb) info threads
* 1 Remote target 0x812f8c78 in __ticket_spin_lock (
lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/include/asm/spinlock.h:114
(gdb) bt full
#0 0x812f8c78 in __ticket_spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/include/asm/spinlock.h:114
inc = 1
tmp = 0
#1 __raw_spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/include/asm/spinlock.h:190
No locals.
#2 __spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/include/linux/spinlock_api_smp.h:337
No locals.
#3 _spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/spinlock.c:138
No locals.
#4 0x8104d344 in vprintk (
fmt=0x813a8798 1BUG: unable to handle kernel ,
args=0x88003fdb93a8)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/printk.c:705
printed_len = 0
current_log_level = 4
flags = 0
p = value optimized out
#5 0x812f6eec in printk (fmt=0x815d13c0 )
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/printk.c:595
---Type return to continue, or q return to quit---
args = {{gp_offset = 8, fp_offset = 48,
overflow_arg_area = 0x88003fdb9488,
reg_save_area = 0x88003fdb93c8}}
r = 1
#6 0x810311b0 in show_fault_oops (address=value optimized out,
error_code=value optimized out, regs=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/fault.c:583
No locals.
#7 no_context (address=value optimized out,
error_code=value optimized out, regs=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/fault.c:658
tsk = 0x88003fdb4000
flags = 0
sig = value optimized out
#8 0x81031429 in __bad_area_nosemaphore (regs=0x88003fdb9598,
error_code=value optimized out, address=18446744071582043416,
si_code=196609)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/fault.c:741
tsk = 0x88003fdb4000
#9 0x812f9015 in ?? ()
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/kernel/entry_64.S:1383
No locals.
#10 0x0005398d646e415d in ?? ()
No symbol table info available.
#11 0xd5de35ab in ?? ()
---Type return to continue, or q return to quit---
No symbol table info available.
#12 0x0002 in ?? ()
No symbol table info available.
#13 0x000c82198774ef00 in ?? ()
No symbol table info available.
#14 0x0001 in ?? ()
No symbol table info available.
#15 0x8800032e6040 in ?? ()
No symbol table info available.
#16 0x0202 in ?? ()
No symbol table info available.
#17 0x8800 in ?? ()
No symbol table info available.
#18 0x813a87b8 in ?? ()
__kcrctab_unregister_net_sysctl_table = 2623496682
__kstrtab_unregister_net_sysctl_table = unregister_net_sysctl_table
net_sysctl_ro_root = {root_list = {next = 0x814649b0,
prev = 0x814a6350}, default_set = {list = {
next = 0x88003fe34c08, prev = 0x88003d8dd808},
parent = 0x814649c0, is_seen = 0}, lookup = 0,
permissions = 0x812e4313 net_ctl_ro_header_perms}
sysctl_pernet_ops = {list = {next = 0x8149bcc0,
prev = 0x814a6140},
init = 0x812e4323 sysctl_net_init,
exit = 0x812e4375 sysctl_net_exit}
__ksymtab_register_net_sysctl_table = {value = 18446744071581877167,
name = 0x81422f46 register_net_sysctl_table}
__kstrtab_register_net_sysctl_table = register_net_sysctl_table
__initcall_sysctl_init4 = 0
---Type return to continue, or q return to quit---
__kcrctab_register_net_sysctl_table = 829491708
Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
Here's some debugging output. I installed
linux-image-2.6.32-5-amd64-dbg and linux-source-2.6.32 and then used
sudo gdbserver-xen 127.0.0.1: --attach 37
where 37 is the domid printed by xm list and
sudo gdb /local/lindi/vmlinux-2.6.32-5-amd64
(gdb) target remote 127.0.0.1:
on the opensuse dom0 to attach gdb to linux. It seems that Linux (-17)
is stuck trying to print an OOPS:
(gdb) info threads
* 1 Remote target 0x812f8c78 in __ticket_spin_lock (
lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/include/asm/spinlock.h:114
(gdb) bt full
#0 0x812f8c78 in __ticket_spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/include/asm/spinlock.h:114
inc = 1
tmp = 0
#1 __raw_spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/include/asm/spinlock.h:190
No locals.
#2 __spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/include/linux/spinlock_api_smp.h:337
No locals.
#3 _spin_lock (lock=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/spinlock.c:138
No locals.
#4 0x8104d344 in vprintk (
fmt=0x813a8798 1BUG: unable to handle kernel ,
args=0x88003fdb93a8)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/printk.c:705
printed_len = 0
current_log_level = 4
flags = 0
p = value optimized out
#5 0x812f6eec in printk (fmt=0x815d13c0 )
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/printk.c:595
---Type return to continue, or q return to quit---
args = {{gp_offset = 8, fp_offset = 48,
overflow_arg_area = 0x88003fdb9488,
reg_save_area = 0x88003fdb93c8}}
r = 1
#6 0x810311b0 in show_fault_oops (address=value optimized out,
error_code=value optimized out, regs=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/fault.c:583
No locals.
#7 no_context (address=value optimized out,
error_code=value optimized out, regs=value optimized out)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/fault.c:658
tsk = 0x88003fdb4000
flags = 0
sig = value optimized out
#8 0x81031429 in __bad_area_nosemaphore (regs=0x88003fdb9598,
error_code=value optimized out, address=18446744071582043416,
si_code=196609)
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/fault.c:741
tsk = 0x88003fdb4000
#9 0x812f9015 in ?? ()
at
/build/buildd-linux-2.6_2.6.32-17-amd64-FO3n8v/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/kernel/entry_64.S:1383
No locals.
#10 0x0005398d646e415d in ?? ()
No symbol table info available.
#11 0xd5de35ab in ?? ()
---Type return to continue, or q return to quit---
No symbol table info available.
#12 0x0002 in ?? ()
No symbol table info available.
#13 0x000c82198774ef00 in ?? ()
No symbol table info available.
#14 0x0001 in ?? ()
No symbol table info available.
#15 0x8800032e6040 in ?? ()
No symbol table info available.
#16 0x0202 in ?? ()
No symbol table info available.
#17 0x8800 in ?? ()
No symbol table info available.
#18 0x813a87b8 in ?? ()
__kcrctab_unregister_net_sysctl_table = 2623496682
__kstrtab_unregister_net_sysctl_table = unregister_net_sysctl_table
net_sysctl_ro_root = {root_list = {next = 0x814649b0,
prev = 0x814a6350}, default_set = {list = {
next = 0x88003fe34c08, prev = 0x88003d8dd808},
parent = 0x814649c0, is_seen = 0}, lookup = 0,
permissions = 0x812e4313 net_ctl_ro_header_perms}
sysctl_pernet_ops = {list = {next = 0x8149bcc0,
prev = 0x814a6140},
init = 0x812e4323 sysctl_net_init,
exit = 0x812e4375 sysctl_net_exit}
__ksymtab_register_net_sysctl_table = {value = 18446744071581877167,
name = 0x81422f46 register_net_sysctl_table}
__kstrtab_register_net_sysctl_table = register_net_sysctl_table
__initcall_sysctl_init4 = 0
---Type return to continue, or q return to quit---
__kcrctab_register_net_sysctl_table = 829491708
Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
I changed static atomic64_t last_value = ATOMIC64_INIT(0); to volatile static atomic64_t last_value = ATOMIC64_INIT(0); but then Linux got stuck in (gdb) bt 8 #0 panic (fmt=0x0) at /local/lindi/debian-linux-2.6/linux-2.6-2.6.32/debian/build/source_amd64_none/kernel/panic.c:137 #1 0x812e550f in find_early_table_space (use_gbpages=value optimized out, use_pse=value optimized out, end=value optimized out) at /local/lindi/debian-linux-2.6/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/init.c:80 #2 init_memory_mapping (use_gbpages=value optimized out, use_pse=value optimized out, end=value optimized out) at /local/lindi/debian-linux-2.6/linux-2.6-2.6.32/debian/build/source_amd64_none/arch/x86/mm/init.c:271 #3 0x814f0e25 in ?? () #4 0x814ed9d0 in start_kernel () at /local/lindi/debian-linux-2.6/linux-2.6-2.6.32/debian/build/source_amd64_none/init/main.c:546 #5 0x8307f000 in ?? () #6 0x8308 in ?? () #7 0x83081000 in ?? () (More stack frames follow...) without printing anything. The check in question is probably e820_table_start = find_e820_area(start, max_pfn_mappedPAGE_SHIFT, tables, PAGE_SIZE); if (e820_table_start == -1UL) panic(Cannot find space for the kernel page tables); Any idea what is going on? -Timo -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
package linux-image-2.6.32-5-amd64 tags 588509 patch thanks The trouble I had in message #47 was caused by accidental mem=nopentium option that got enabled when I installed my modified package. When I remove that I can boot: [0.00] Initializing cgroup subsys cpuset [0.00] Initializing cgroup subsys cpu [0.00] Linux version 2.6.32-5-amd64 (Debian 2.6.32-17+lindi1) (li...@kurp.hut.fi) (gcc version 4.3.5 (Debian 4.3.5-1) ) #1 SMP Fri Jul 16 18:55:57 EEST 2010 [0.00] Command line: root=/dev/xvda ro console=hvc0 [0.00] KERNEL supported cpus: [0.00] Intel GenuineIntel [0.00] AMD AuthenticAMD [0.00] Centaur CentaurHauls [0.00] ACPI in unprivileged domain disabled [0.00] BIOS-provided physical RAM map: [0.00] Xen: - 000a (usable) [0.00] Xen: 000a - 0010 (reserved) [0.00] Xen: 0010 - 4000 (usable) [0.00] DMI not present or invalid. [0.00] last_pfn = 0x4 max_arch_pfn = 0x4 [0.00] init_memory_mapping: -4000 [0.00] RAMDISK: 016a3000 - 02fb5000 [0.00] No NUMA configuration found [0.00] Faking a node at -4000 [0.00] Bootmem setup node 0 -4000 [0.00] NODE_DATA [8000 - ] [0.00] bootmap [0001 - 00017fff] pages 8 [0.00] (7 early reservations) == bootmem [00 - 004000] [0.00] #0 [00 - 001000] BIOS data page == [00 - 001000] [0.00] #1 [00031b8000 - 00031d5000] XEN PAGETABLES == [00031b8000 - 00031d5000] [0.00] #2 [006000 - 008000] TRAMPOLINE == [006000 - 008000] [0.00] #3 [000100 - 0001682794]TEXT DATA BSS == [000100 - 0001682794] [0.00] #4 [00016a3000 - 0002fb5000] RAMDISK == [00016a3000 - 0002fb5000] [0.00] #5 [0002fb5000 - 00031b8000] XEN START INFO == [0002fb5000 - 00031b8000] [0.00] #6 [10 - 2e2000] PGTABLE == [10 - 2e2000] [0.00] Zone PFN ranges: [0.00] DMA 0x - 0x1000 [0.00] DMA320x1000 - 0x0010 [0.00] Normal 0x0010 - 0x0010 [0.00] Movable zone start PFN for each node [0.00] early_node_map[2] active PFN ranges [0.00] 0: 0x - 0x00a0 [0.00] 0: 0x0100 - 0x0004 [0.00] SFI: Simple Firmware Interface v0.7 http://simplefirmware.org [0.00] SMP: Allowing 1 CPUs, 0 hotplug CPUs [0.00] No local APIC present [0.00] APIC: disable apic facility [0.00] PM: Registered nosave memory: 000a - 0010 [0.00] Allocating PCI resources starting at 4000 (gap: 4000:c000) [0.00] Booting paravirtualized kernel on Xen [0.00] Xen version: 3.4.1_19718_04-2.1 (preserve-AD) [0.00] NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:1 nr_node_ids:1 [0.00] PERCPU: Embedded 30 pages/cpu @88000320b000 s90328 r8192 d24360 u122880 [0.00] pcpu-alloc: s90328 r8192 d24360 u122880 alloc=30*4096 [0.00] pcpu-alloc: [0] 0 [0.00] Xen: using vcpu_info placement [0.00] Built 1 zonelists in Node order, mobility grouping on. Total pages: 257979 [0.00] Policy zone: DMA32 [0.00] Kernel command line: root=/dev/xvda ro console=hvc0 [0.00] PID hash table entries: 4096 (order: 3, 32768 bytes) [0.00] Initializing CPU#0 [0.00] Checking aperture... [0.00] No AGP bridge found [0.00] Memory: 996936k/1048576k available (3067k kernel code, 384k absent, 51256k reserved, 1879k data, 588k init) [0.00] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [0.00] Hierarchical RCU implementation. [0.00] NR_IRQS:4352 nr_irqs:256 [0.00] Console: colour dummy device 80x25 [0.00] console [tty0] enabled [0.00] console [hvc0] enabled [0.00] installing Xen timer for CPU 0 [0.00] Detected 2393.998 MHz processor. [0.004000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4787.99 BogoMIPS (lpj=9575992) [0.004000] Security Framework initialized [0.004000] SELinux: Disabled at boot. [0.004000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes) [0.004000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes) [0.004000] Mount-cache hash table entries: 256 [0.004000] Initializing cgroup subsys ns [0.004000] Initializing cgroup subsys cpuacct [0.004000] Initializing cgroup subsys devices [0.004000] Initializing cgroup subsys freezer [0.004000] Initializing cgroup subsys net_cls [
Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
Sorry, I forgot to include Xen version number information: $ sudo xm info host : overlord2 release: 2.6.31.12-0.2-xen version: #1 SMP 2010-03-16 21:25:39 +0100 machine: x86_64 nr_cpus: 4 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 1 cpu_mhz: 2394 hw_caps: bfebfbff:20100800::0140:e3bd::0001: virt_caps : hvm total_memory : 8189 free_memory: 16 max_free_memory: 2420 max_para_memory: 2416 max_hvm_memory : 2402 node_to_cpu: node0:0-3 node_to_memory : node0:16 xen_major : 3 xen_minor : 4 xen_extra : .1_19718_04-2.1 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=0x8000 xen_changeset : 19718 cc_compiler: gcc version 4.4.1 [gcc-4_4-branch revision 150839] (SUSE Linux) cc_compile_by : abuild cc_compile_domain : cc_compile_date: Tue Oct 27 16:31:01 UTC 2009 xend_config_format : 4 (If these look odd it is because Dom0 runs openSUSE 11.2) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
Would it be ok to raise the severity to serious to prevent migration to testing? Even if investigating this takes time I'd hate to have a kernel that does not boot under Xen in testing. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#588509: linux-image-2.6.32-5-amd64: hangs under Xen after Write protecting the kernel read-only data: 4220k
Package: linux-2.6 Version: 2.6.32-16 Severity: important I have been running linux-image-2.6.32-5-amd64 2.6.32-15 mostly without problems (except for #580889) since 2010-06-14 in debian squeeze running under Xen. When I heard that -16 includes CONFIG_KPROBES I wanted to test it early. I installed the package from unstable with wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-image-2.6.32-5-amd64_2.6.32-16_amd64.deb wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-image-2.6.32-5-amd64-dbg_2.6.32-16_amd64.deb wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-image-2.6.32-5-amd64-common_2.6.32-16_amd64.deb wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-headers-2.6.32-5-amd64-common_2.6.32-16_amd64.deb wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-headers-2.6.32-5-common_2.6.32-16_amd64.deb wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-headers-2.6.32-5-amd64_2.6.32-16_amd64.deb wget http://ftp.fi.debian.org/debian/pool/main/l/linux-2.6/linux-base_2.6.32-16_all.deb sudo dpkg -i *.deb but boot stopped at [0.00] Initializing cgroup subsys cpuset [0.00] Initializing cgroup subsys cpu [0.00] Linux version 2.6.32-5-amd64 (Debian 2.6.32-16) (b...@decadent.org.uk) (gcc version 4.3.5 (Debian 4.3.5-1) ) #1 SMP Tue Jul 6 14:14:38 UTC 2010 [0.00] Command line: root=/dev/xvda ro console=hvc0 [0.00] KERNEL supported cpus: [0.00] Intel GenuineIntel [0.00] AMD AuthenticAMD [0.00] Centaur CentaurHauls [0.00] ACPI in unprivileged domain disabled [0.00] BIOS-provided physical RAM map: [0.00] Xen: - 000a (usable) [0.00] Xen: 000a - 0010 (reserved) [0.00] Xen: 0010 - 8000 (usable) [0.00] DMI not present or invalid. [0.00] last_pfn = 0x8 max_arch_pfn = 0x4 [0.00] init_memory_mapping: -8000 [0.00] RAMDISK: 016a5000 - 03085000 [0.00] No NUMA configuration found [0.00] Faking a node at -8000 [0.00] Bootmem setup node 0 -8000 [0.00] NODE_DATA [8000 - ] [0.00] bootmap [0001 - 0001] pages 10 [0.00] (7 early reservations) == bootmem [00 - 008000] [0.00] #0 [00 - 001000] BIOS data page == [00 - 001000] [0.00] #1 [0003488000 - 00034a7000] XEN PAGETABLES == [0003488000 - 00034a7000] [0.00] #2 [006000 - 008000] TRAMPOLINE == [006000 - 008000] [0.00] #3 [000100 - 0001684754]TEXT DATA BSS == [000100 - 0001684754] [0.00] #4 [00016a5000 - 0003085000] RAMDISK == [00016a5000 - 0003085000] [0.00] #5 [0003085000 - 0003488000] XEN START INFO == [0003085000 - 0003488000] [0.00] #6 [10 - 4e1000] PGTABLE == [10 - 4e1000] [0.00] Zone PFN ranges: [0.00] DMA 0x - 0x1000 [0.00] DMA320x1000 - 0x0010 [0.00] Normal 0x0010 - 0x0010 [0.00] Movable zone start PFN for each node [0.00] early_node_map[2] active PFN ranges [0.00] 0: 0x - 0x00a0 [0.00] 0: 0x0100 - 0x0008 [0.00] SFI: Simple Firmware Interface v0.7 http://simplefirmware.org [0.00] SMP: Allowing 2 CPUs, 0 hotplug CPUs [0.00] No local APIC present [0.00] APIC: disable apic facility [0.00] PM: Registered nosave memory: 000a - 0010 [0.00] Allocating PCI resources starting at 8000 (gap: 8000:8000) [0.00] Booting paravirtualized kernel on Xen [0.00] Xen version: 3.4.1_19718_04-2.1 (preserve-AD) [0.00] NR_CPUS:512 nr_cpumask_bits:512 nr_cpu_ids:2 nr_node_ids:1 [0.00] PERCPU: Embedded 30 pages/cpu @8800034dd000 s90328 r8192 d24360 u122880 [0.00] pcpu-alloc: s90328 r8192 d24360 u122880 alloc=30*4096 [0.00] pcpu-alloc: [0] 0 [0] 1 [0.00] Xen: using vcpu_info placement [0.00] Built 1 zonelists in Node order, mobility grouping on. Total pages: 516028 [0.00] Policy zone: DMA32 [0.00] Kernel command line: root=/dev/xvda ro console=hvc0 [0.00] PID hash table entries: 4096 (order: 3, 32768 bytes) [0.00] Initializing CPU#0 [0.00] Checking aperture... [0.00] No AGP bridge found [0.00] Memory: 2026096k/2097152k available (3067k kernel code, 384k absent, 70672k reserved, 1887k data, 588k init) [0.00] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [0.00] Hierarchical RCU implementation. [0.00] NR_IRQS:4352
