Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-16 Thread Gleb Natapov

Copying Michael.

On Tue, Jan 15, 2013 at 12:18:59PM +0100, Artur Samborski wrote:
 W dniu 13.01.2013 10:23, Gleb Natapov pisze:
 On Fri, Jan 11, 2013 at 03:57:05PM +0100, Artur Samborski wrote:
 W dniu 09.01.2013 11:15, Gleb Natapov pisze:
 On Tue, Jan 08, 2013 at 09:45:35PM +0100, Artur Samborski wrote:
 W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:
 On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:
 Hello,
 
 When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
 (Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:
 
 qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
 /storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso
 
 it freezes KVM with:
 
 KVM internal error. Suberror: 1
 emulation failure
 RAX=80b0d4c0 RBX=0009f000 RCX=c080
 RDX=
 RSI=d238 RDI= RBP=
 RSP=
 R8 = R9 = R10=
 R11=
 R12= R13= R14=
 R15=
 RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
 ES =   f300 DPL=3 DS16 [-WA]
 CS =0008   00209900 DPL=0 CS64 [--A]
 SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
 DS =0018   00c09300 DPL=0 DS   [-WA]
 FS =   f300 DPL=3 DS16 [-WA]
 GS =   f300 DPL=3 DS16 [-WA]
 LDT=   8200 DPL=0 LDT
 TR =   8b00 DPL=0 TSS64-busy
 GDT= 0009f080 0020
 IDT=  
 CR0=8011 CR2= CR3=0009c000 CR4=0030
 DR0= DR1= DR2=
 DR3=
 DR6=0ff0 DR7=0400
 EFER=0501
 Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
 ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 99 20 00 ff ff 00 00
 
 Artur,
 
 Can you check whether
 
 https://patchwork-mail.kernel.org/patch/1942681/
 
 fixes your problem
 
 
 Hi, thanks for the reply.
 
 Unfortunately, the patch does not help. Attempt to start FreeBSD
 amd64 via quemu-kvm with -smp parameter greater than 1 fails in
 exactly the same way as before.
 
 The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm 
 package.
 
 Do I need some additional patches?
 
 
 Can you try queue branch from kvm.git?
 
 
 Thanks for the advice - I used kernel from kvm.git(queue) and was
 able to run FreeBSD-amd guest with SMP on my kvm-host server without
 previous problems. Unfortunately, after few hours server was hung
 up. Case requires further investigations, but generally speaking we
 went forward. Unfortunately, experiments on the server are
 difficult, because it is used for everyday work.
 
 Thanks for testing. This hang indeed looks like completely different
 problem. What workload the VM was running?
 
 
 First test:
 
  - kvm.git kernel
  - 2 kvm guest running:
- Linux (in idle)
- Freebsd-amd64 (high load, about 7 -- continuous FreeBSD world
 and kernel build)
  - KVM host hangs after about 5 hours
  - nothing special in system logs
  - message caught on one of the active SSH session:
 
 kernel:[24742.127690] BUG: soft lockup - CPU#2 stuck for 22s!
 [vhost-3686:3700]
 
 Second test:
 
  - kvm.git kernel
  - 1 kvm guest running:
- Linux (at the time of hang -- in idle)
- about 10 minutes before KVM host hangs -- load about 6 (kernel build)
  - in system logs:
 
 BUG: soft lockup - CPU#0 stuck for 22s! [vhost-1771:1800]
 Modules linked in: binfmt_misc ip6table_filter ip6_tables
 ebtable_nat ebtables lockd sunrpc nf_conntrack_ipv4 nf_defrag_ipv4
 xt_state nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc
 be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3
 mdio libcxgbi ib_iser bnep bluetooth rfkill rdma_cm ib_addr iw_cm
 ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi
 scsi_transport_iscsi ioatdma vhost_net iTCO_wdt iTCO_vendor_support
 ses lpc_ich tun macvtap macvlan mfd_core enclosure bnx2 joydev
 i7core_edac dca edac_core wmi coretemp dcdbas kvm_intel pcspkr
 crc32c_intel kvm serio_raw acpi_power_meter microcode uinput
 ipmi_devintf ipmi_si ipmi_msghandler megaraid_sas
 CPU 0
 Pid: 1800, comm: vhost-1771 Not tainted 3.7.0+ #2 Dell Inc.
 PowerEdge R610/086HF8
 RIP: 0010:[8152876f]  [8152876f]
 skb_flow_dissect+0xbf/0x3e0
 RSP: 0018:88042145dbd8  EFLAGS: 0246
 RAX:  RBX: 8807fa489c00 RCX: f7ab0c277df5b6fd
 RDX: 880820c59800 RSI: 88042145dc58 RDI: 8807fa489c00
 RBP: 88042145dc48 R08: 0404 R09: 0412
 R10: 8807fa489c00 R11: 0412 R12: 81522a57
 R13:  R14: 81521fdc R15: 88042145db78
 FS:  () 

Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-16 Thread Michael S. Tsirkin
On Wed, Jan 16, 2013 at 03:05:50PM +0200, Gleb Natapov wrote:
 
 Copying Michael.
 
 On Tue, Jan 15, 2013 at 12:18:59PM +0100, Artur Samborski wrote:
  W dniu 13.01.2013 10:23, Gleb Natapov pisze:
  On Fri, Jan 11, 2013 at 03:57:05PM +0100, Artur Samborski wrote:
  W dniu 09.01.2013 11:15, Gleb Natapov pisze:
  On Tue, Jan 08, 2013 at 09:45:35PM +0100, Artur Samborski wrote:
  W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:
  On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:
  Hello,
  
  When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
  (Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:
  
  qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
  /storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso
  
  it freezes KVM with:
  
  KVM internal error. Suberror: 1
  emulation failure
  RAX=80b0d4c0 RBX=0009f000 RCX=c080
  RDX=
  RSI=d238 RDI= RBP=
  RSP=
  R8 = R9 = R10=
  R11=
  R12= R13= R14=
  R15=
  RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 
  HLT=0
  ES =   f300 DPL=3 DS16 [-WA]
  CS =0008   00209900 DPL=0 CS64 [--A]
  SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
  DS =0018   00c09300 DPL=0 DS   [-WA]
  FS =   f300 DPL=3 DS16 [-WA]
  GS =   f300 DPL=3 DS16 [-WA]
  LDT=   8200 DPL=0 LDT
  TR =   8b00 DPL=0 TSS64-busy
  GDT= 0009f080 0020
  IDT=  
  CR0=8011 CR2= CR3=0009c000 CR4=0030
  DR0= DR1= DR2=
  DR3=
  DR6=0ff0 DR7=0400
  EFER=0501
  Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
  ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  00 99 20 00 ff ff 00 00
  
  Artur,
  
  Can you check whether
  
  https://patchwork-mail.kernel.org/patch/1942681/
  
  fixes your problem
  
  
  Hi, thanks for the reply.
  
  Unfortunately, the patch does not help. Attempt to start FreeBSD
  amd64 via quemu-kvm with -smp parameter greater than 1 fails in
  exactly the same way as before.
  
  The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm 
  package.
  
  Do I need some additional patches?
  
  
  Can you try queue branch from kvm.git?
  
  
  Thanks for the advice - I used kernel from kvm.git(queue) and was
  able to run FreeBSD-amd guest with SMP on my kvm-host server without
  previous problems. Unfortunately, after few hours server was hung
  up. Case requires further investigations, but generally speaking we
  went forward. Unfortunately, experiments on the server are
  difficult, because it is used for everyday work.
  
  Thanks for testing. This hang indeed looks like completely different
  problem. What workload the VM was running?
  
  
  First test:
  
   - kvm.git kernel
   - 2 kvm guest running:
 - Linux (in idle)
 - Freebsd-amd64 (high load, about 7 -- continuous FreeBSD world
  and kernel build)
   - KVM host hangs after about 5 hours
   - nothing special in system logs
   - message caught on one of the active SSH session:
  
  kernel:[24742.127690] BUG: soft lockup - CPU#2 stuck for 22s!
  [vhost-3686:3700]
  
  Second test:
  
   - kvm.git kernel
   - 1 kvm guest running:
 - Linux (at the time of hang -- in idle)
 - about 10 minutes before KVM host hangs -- load about 6 (kernel build)
   - in system logs:
  
  BUG: soft lockup - CPU#0 stuck for 22s! [vhost-1771:1800]
  Modules linked in: binfmt_misc ip6table_filter ip6_tables
  ebtable_nat ebtables lockd sunrpc nf_conntrack_ipv4 nf_defrag_ipv4
  xt_state nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc
  be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3
  mdio libcxgbi ib_iser bnep bluetooth rfkill rdma_cm ib_addr iw_cm
  ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi
  scsi_transport_iscsi ioatdma vhost_net iTCO_wdt iTCO_vendor_support
  ses lpc_ich tun macvtap macvlan mfd_core enclosure bnx2 joydev
  i7core_edac dca edac_core wmi coretemp dcdbas kvm_intel pcspkr
  crc32c_intel kvm serio_raw acpi_power_meter microcode uinput
  ipmi_devintf ipmi_si ipmi_msghandler megaraid_sas
  CPU 0
  Pid: 1800, comm: vhost-1771 Not tainted 3.7.0+ #2 Dell Inc.
  PowerEdge R610/086HF8
  RIP: 0010:[8152876f]  [8152876f]
  skb_flow_dissect+0xbf/0x3e0
  RSP: 0018:88042145dbd8  EFLAGS: 0246
  RAX:  RBX: 8807fa489c00 RCX: f7ab0c277df5b6fd
  RDX: 880820c59800 RSI: 88042145dc58 RDI: 8807fa489c00
  RBP: 88042145dc48 R08: 0404 R09: 

Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-16 Thread Gleb Natapov
On Wed, Jan 16, 2013 at 04:42:38PM +0200, Michael S. Tsirkin wrote:
   First test:
   
- kvm.git kernel
- 2 kvm guest running:
  - Linux (in idle)
  - Freebsd-amd64 (high load, about 7 -- continuous FreeBSD world
   and kernel build)
- KVM host hangs after about 5 hours
- nothing special in system logs
- message caught on one of the active SSH session:
   
   kernel:[24742.127690] BUG: soft lockup - CPU#2 stuck for 22s!
   [vhost-3686:3700]
   
   Second test:
   
- kvm.git kernel
- 1 kvm guest running:
  - Linux (at the time of hang -- in idle)
  - about 10 minutes before KVM host hangs -- load about 6 (kernel build)
- in system logs:
   
   BUG: soft lockup - CPU#0 stuck for 22s! [vhost-1771:1800]
   Modules linked in: binfmt_misc ip6table_filter ip6_tables
   ebtable_nat ebtables lockd sunrpc nf_conntrack_ipv4 nf_defrag_ipv4
   xt_state nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc
   be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3
   mdio libcxgbi ib_iser bnep bluetooth rfkill rdma_cm ib_addr iw_cm
   ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi
   scsi_transport_iscsi ioatdma vhost_net iTCO_wdt iTCO_vendor_support
   ses lpc_ich tun macvtap macvlan mfd_core enclosure bnx2 joydev
   i7core_edac dca edac_core wmi coretemp dcdbas kvm_intel pcspkr
   crc32c_intel kvm serio_raw acpi_power_meter microcode uinput
   ipmi_devintf ipmi_si ipmi_msghandler megaraid_sas
   CPU 0
   Pid: 1800, comm: vhost-1771 Not tainted 3.7.0+ #2 Dell Inc.
   PowerEdge R610/086HF8
   RIP: 0010:[8152876f]  [8152876f]
   skb_flow_dissect+0xbf/0x3e0
   RSP: 0018:88042145dbd8  EFLAGS: 0246
   RAX:  RBX: 8807fa489c00 RCX: f7ab0c277df5b6fd
   RDX: 880820c59800 RSI: 88042145dc58 RDI: 8807fa489c00
   RBP: 88042145dc48 R08: 0404 R09: 0412
   R10: 8807fa489c00 R11: 0412 R12: 81522a57
   R13:  R14: 81521fdc R15: 88042145db78
   FS:  () GS:88083fc0() 
   knlGS:
   CS:  0010 DS:  ES:  CR0: 8005003b
   CR2: 01c0e9f4 CR3: 000827973000 CR4: 27e0
   DR0:  DR1:  DR2: 
   DR3:  DR6: 0ff0 DR7: 0400
   Process vhost-1771 (pid: 1800, threadinfo 88042145c000, task
   880421151740)
   Stack:
88042145dc78 0412  0412
000c 880422570800 88042145dc78 81525881
 de057f32 8807fa489c00 0412
   Call Trace:
[81525881] ? skb_copy_datagram_from_iovec+0x61/0x280
[8152a06a] __skb_get_rxhash+0x1a/0xd0
[a01109e0] tun_get_user+0x3e0/0x760 [tun]
[a0110dba] tun_sendmsg+0x5a/0x80 [tun]
[a013cd2a] handle_tx+0x28a/0x680 [vhost_net]
[a013d155] handle_tx_kick+0x15/0x20 [vhost_net]
[a013995d] vhost_worker+0xed/0x190 [vhost_net]
[a0139870] ? vhost_work_flush+0x110/0x110 [vhost_net]
[81081750] kthread+0xc0/0xd0
[8101] ? ftrace_define_fields_xen_mc_entry+0x50/0xf0
[81081690] ? kthread_create_on_node+0x120/0x120
[8163feac] ret_from_fork+0x7c/0xb0
[81081690] ? kthread_create_on_node+0x120/0x120
   Code: 68 41 2b 44 24 6c 29 d8 83 f8 13 0f 8e eb 00 00 00 48 63 d3 49
   03 94 24 e8 00 00 00 48 85 d2 74 b0 31 c0 66 f7 42 06 3f ff 75 04
   0f b6 42 09 48 8b 4a 0c 49 89 0e 0f b6 12 83 e2 0f 8d 1c 93 eb
   
   repeated several times with similar content
   
   -- 
   Artur
 
 
 Looks like this?
 https://git.kernel.org/?p=linux/kernel/git/davem/net.git;a=commit;h=76fe45812a3b134c39170ca32dfd4b7217d33145
 
Artur,

Can you please apply this fix on top of kvm.git/queue and try again.

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Gleb.
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Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-16 Thread Artur Samborski

W dniu 17.01.2013 07:37, Gleb Natapov pisze:

On Wed, Jan 16, 2013 at 04:42:38PM +0200, Michael S. Tsirkin wrote:

First test:

  - kvm.git kernel
  - 2 kvm guest running:
- Linux (in idle)
- Freebsd-amd64 (high load, about 7 -- continuous FreeBSD world
and kernel build)
  - KVM host hangs after about 5 hours
  - nothing special in system logs
  - message caught on one of the active SSH session:

kernel:[24742.127690] BUG: soft lockup - CPU#2 stuck for 22s!
[vhost-3686:3700]

Second test:

  - kvm.git kernel
  - 1 kvm guest running:
- Linux (at the time of hang -- in idle)
- about 10 minutes before KVM host hangs -- load about 6 (kernel build)
  - in system logs:

BUG: soft lockup - CPU#0 stuck for 22s! [vhost-1771:1800]
Modules linked in: binfmt_misc ip6table_filter ip6_tables
ebtable_nat ebtables lockd sunrpc nf_conntrack_ipv4 nf_defrag_ipv4
xt_state nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc
be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3
mdio libcxgbi ib_iser bnep bluetooth rfkill rdma_cm ib_addr iw_cm
ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi ioatdma vhost_net iTCO_wdt iTCO_vendor_support
ses lpc_ich tun macvtap macvlan mfd_core enclosure bnx2 joydev
i7core_edac dca edac_core wmi coretemp dcdbas kvm_intel pcspkr
crc32c_intel kvm serio_raw acpi_power_meter microcode uinput
ipmi_devintf ipmi_si ipmi_msghandler megaraid_sas
CPU 0
Pid: 1800, comm: vhost-1771 Not tainted 3.7.0+ #2 Dell Inc.
PowerEdge R610/086HF8
RIP: 0010:[8152876f]  [8152876f]
skb_flow_dissect+0xbf/0x3e0
RSP: 0018:88042145dbd8  EFLAGS: 0246
RAX:  RBX: 8807fa489c00 RCX: f7ab0c277df5b6fd
RDX: 880820c59800 RSI: 88042145dc58 RDI: 8807fa489c00
RBP: 88042145dc48 R08: 0404 R09: 0412
R10: 8807fa489c00 R11: 0412 R12: 81522a57
R13:  R14: 81521fdc R15: 88042145db78
FS:  () GS:88083fc0() knlGS:
CS:  0010 DS:  ES:  CR0: 8005003b
CR2: 01c0e9f4 CR3: 000827973000 CR4: 27e0
DR0:  DR1:  DR2: 
DR3:  DR6: 0ff0 DR7: 0400
Process vhost-1771 (pid: 1800, threadinfo 88042145c000, task
880421151740)
Stack:
  88042145dc78 0412  0412
  000c 880422570800 88042145dc78 81525881
   de057f32 8807fa489c00 0412
Call Trace:
  [81525881] ? skb_copy_datagram_from_iovec+0x61/0x280
  [8152a06a] __skb_get_rxhash+0x1a/0xd0
  [a01109e0] tun_get_user+0x3e0/0x760 [tun]
  [a0110dba] tun_sendmsg+0x5a/0x80 [tun]
  [a013cd2a] handle_tx+0x28a/0x680 [vhost_net]
  [a013d155] handle_tx_kick+0x15/0x20 [vhost_net]
  [a013995d] vhost_worker+0xed/0x190 [vhost_net]
  [a0139870] ? vhost_work_flush+0x110/0x110 [vhost_net]
  [81081750] kthread+0xc0/0xd0
  [8101] ? ftrace_define_fields_xen_mc_entry+0x50/0xf0
  [81081690] ? kthread_create_on_node+0x120/0x120
  [8163feac] ret_from_fork+0x7c/0xb0
  [81081690] ? kthread_create_on_node+0x120/0x120
Code: 68 41 2b 44 24 6c 29 d8 83 f8 13 0f 8e eb 00 00 00 48 63 d3 49
03 94 24 e8 00 00 00 48 85 d2 74 b0 31 c0 66 f7 42 06 3f ff 75 04
0f b6 42 09 48 8b 4a 0c 49 89 0e 0f b6 12 83 e2 0f 8d 1c 93 eb

repeated several times with similar content

--
Artur



Looks like this?
https://git.kernel.org/?p=linux/kernel/git/davem/net.git;a=commit;h=76fe45812a3b134c39170ca32dfd4b7217d33145


Artur,

Can you please apply this fix on top of kvm.git/queue and try again.



Hi, thanks for the advice. I applied the patch created from commit 
76fe45812a3b134c39170ca32dfd4b7217d33145 to branch  queue previous 
evening. Fortunately, it seems that it works now. During the whole night 
(about 10 hours) I tested two virtual machines (Linux and FreeBSD-amd64) 
under high load and nothing bad happened.


From the first observation it seems to me that the performance of the 
VM with FreeBSD-amd64 is much worse than the VM with FreeBSD-i386 -- 
but, it requires further testing.


--
Artur
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Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-15 Thread Artur Samborski

W dniu 13.01.2013 10:23, Gleb Natapov pisze:

On Fri, Jan 11, 2013 at 03:57:05PM +0100, Artur Samborski wrote:

W dniu 09.01.2013 11:15, Gleb Natapov pisze:

On Tue, Jan 08, 2013 at 09:45:35PM +0100, Artur Samborski wrote:

W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:

On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:

Hello,

When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
(Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:

qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
/storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso

it freezes KVM with:

KVM internal error. Suberror: 1
emulation failure
RAX=80b0d4c0 RBX=0009f000 RCX=c080
RDX=
RSI=d238 RDI= RBP=
RSP=
R8 = R9 = R10=
R11=
R12= R13= R14=
R15=
RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =   f300 DPL=3 DS16 [-WA]
CS =0008   00209900 DPL=0 CS64 [--A]
SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
DS =0018   00c09300 DPL=0 DS   [-WA]
FS =   f300 DPL=3 DS16 [-WA]
GS =   f300 DPL=3 DS16 [-WA]
LDT=   8200 DPL=0 LDT
TR =   8b00 DPL=0 TSS64-busy
GDT= 0009f080 0020
IDT=  
CR0=8011 CR2= CR3=0009c000 CR4=0030
DR0= DR1= DR2=
DR3=
DR6=0ff0 DR7=0400
EFER=0501
Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 99 20 00 ff ff 00 00


Artur,

Can you check whether

https://patchwork-mail.kernel.org/patch/1942681/

fixes your problem



Hi, thanks for the reply.

Unfortunately, the patch does not help. Attempt to start FreeBSD
amd64 via quemu-kvm with -smp parameter greater than 1 fails in
exactly the same way as before.

The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm package.

Do I need some additional patches?



Can you try queue branch from kvm.git?



Thanks for the advice - I used kernel from kvm.git(queue) and was
able to run FreeBSD-amd guest with SMP on my kvm-host server without
previous problems. Unfortunately, after few hours server was hung
up. Case requires further investigations, but generally speaking we
went forward. Unfortunately, experiments on the server are
difficult, because it is used for everyday work.


Thanks for testing. This hang indeed looks like completely different
problem. What workload the VM was running?



First test:

 - kvm.git kernel
 - 2 kvm guest running:
   - Linux (in idle)
   - Freebsd-amd64 (high load, about 7 -- continuous FreeBSD world and 
kernel build)

 - KVM host hangs after about 5 hours
 - nothing special in system logs
 - message caught on one of the active SSH session:

kernel:[24742.127690] BUG: soft lockup - CPU#2 stuck for 22s! 
[vhost-3686:3700]


Second test:

 - kvm.git kernel
 - 1 kvm guest running:
   - Linux (at the time of hang -- in idle)
   - about 10 minutes before KVM host hangs -- load about 6 (kernel build)
 - in system logs:

BUG: soft lockup - CPU#0 stuck for 22s! [vhost-1771:1800]
Modules linked in: binfmt_misc ip6table_filter ip6_tables ebtable_nat 
ebtables lockd sunrpc nf_conntrack_ipv4 nf_defrag_ipv4 xt_state 
nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc be2iscsi 
iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi 
ib_iser bnep bluetooth rfkill rdma_cm ib_addr iw_cm ib_cm ib_sa ib_mad 
ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ioatdma 
vhost_net iTCO_wdt iTCO_vendor_support ses lpc_ich tun macvtap macvlan 
mfd_core enclosure bnx2 joydev i7core_edac dca edac_core wmi coretemp 
dcdbas kvm_intel pcspkr crc32c_intel kvm serio_raw acpi_power_meter 
microcode uinput ipmi_devintf ipmi_si ipmi_msghandler megaraid_sas

CPU 0
Pid: 1800, comm: vhost-1771 Not tainted 3.7.0+ #2 Dell Inc. PowerEdge 
R610/086HF8
RIP: 0010:[8152876f]  [8152876f] 
skb_flow_dissect+0xbf/0x3e0

RSP: 0018:88042145dbd8  EFLAGS: 0246
RAX:  RBX: 8807fa489c00 RCX: f7ab0c277df5b6fd
RDX: 880820c59800 RSI: 88042145dc58 RDI: 8807fa489c00
RBP: 88042145dc48 R08: 0404 R09: 0412
R10: 8807fa489c00 R11: 0412 R12: 81522a57
R13:  R14: 81521fdc R15: 88042145db78
FS:  () GS:88083fc0() knlGS:
CS:  0010 DS:  ES:  CR0: 8005003b
CR2: 01c0e9f4 CR3: 000827973000 CR4: 27e0
DR0:  DR1: 

Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-13 Thread Gleb Natapov
On Fri, Jan 11, 2013 at 03:57:05PM +0100, Artur Samborski wrote:
 W dniu 09.01.2013 11:15, Gleb Natapov pisze:
 On Tue, Jan 08, 2013 at 09:45:35PM +0100, Artur Samborski wrote:
 W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:
 On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:
 Hello,
 
 When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
 (Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:
 
 qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
 /storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso
 
 it freezes KVM with:
 
 KVM internal error. Suberror: 1
 emulation failure
 RAX=80b0d4c0 RBX=0009f000 RCX=c080
 RDX=
 RSI=d238 RDI= RBP=
 RSP=
 R8 = R9 = R10=
 R11=
 R12= R13= R14=
 R15=
 RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
 ES =   f300 DPL=3 DS16 [-WA]
 CS =0008   00209900 DPL=0 CS64 [--A]
 SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
 DS =0018   00c09300 DPL=0 DS   [-WA]
 FS =   f300 DPL=3 DS16 [-WA]
 GS =   f300 DPL=3 DS16 [-WA]
 LDT=   8200 DPL=0 LDT
 TR =   8b00 DPL=0 TSS64-busy
 GDT= 0009f080 0020
 IDT=  
 CR0=8011 CR2= CR3=0009c000 CR4=0030
 DR0= DR1= DR2=
 DR3=
 DR6=0ff0 DR7=0400
 EFER=0501
 Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
 ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 99 20 00 ff ff 00 00
 
 Artur,
 
 Can you check whether
 
 https://patchwork-mail.kernel.org/patch/1942681/
 
 fixes your problem
 
 
 Hi, thanks for the reply.
 
 Unfortunately, the patch does not help. Attempt to start FreeBSD
 amd64 via quemu-kvm with -smp parameter greater than 1 fails in
 exactly the same way as before.
 
 The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm package.
 
 Do I need some additional patches?
 
 
 Can you try queue branch from kvm.git?
 
 
 Thanks for the advice - I used kernel from kvm.git(queue) and was
 able to run FreeBSD-amd guest with SMP on my kvm-host server without
 previous problems. Unfortunately, after few hours server was hung
 up. Case requires further investigations, but generally speaking we
 went forward. Unfortunately, experiments on the server are
 difficult, because it is used for everyday work.
 
Thanks for testing. This hang indeed looks like completely different
problem. What workload the VM was running?

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Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-11 Thread Artur Samborski

W dniu 09.01.2013 11:15, Gleb Natapov pisze:

On Tue, Jan 08, 2013 at 09:45:35PM +0100, Artur Samborski wrote:

W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:

On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:

Hello,

When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
(Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:

qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
/storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso

it freezes KVM with:

KVM internal error. Suberror: 1
emulation failure
RAX=80b0d4c0 RBX=0009f000 RCX=c080
RDX=
RSI=d238 RDI= RBP=
RSP=
R8 = R9 = R10=
R11=
R12= R13= R14=
R15=
RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =   f300 DPL=3 DS16 [-WA]
CS =0008   00209900 DPL=0 CS64 [--A]
SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
DS =0018   00c09300 DPL=0 DS   [-WA]
FS =   f300 DPL=3 DS16 [-WA]
GS =   f300 DPL=3 DS16 [-WA]
LDT=   8200 DPL=0 LDT
TR =   8b00 DPL=0 TSS64-busy
GDT= 0009f080 0020
IDT=  
CR0=8011 CR2= CR3=0009c000 CR4=0030
DR0= DR1= DR2=
DR3=
DR6=0ff0 DR7=0400
EFER=0501
Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 99 20 00 ff ff 00 00


Artur,

Can you check whether

https://patchwork-mail.kernel.org/patch/1942681/

fixes your problem



Hi, thanks for the reply.

Unfortunately, the patch does not help. Attempt to start FreeBSD
amd64 via quemu-kvm with -smp parameter greater than 1 fails in
exactly the same way as before.

The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm package.

Do I need some additional patches?



Can you try queue branch from kvm.git?



Thanks for the advice - I used kernel from kvm.git(queue) and was able 
to run FreeBSD-amd guest with SMP on my kvm-host server without previous 
problems. Unfortunately, after few hours server was hung up. Case 
requires further investigations, but generally speaking we went forward. 
Unfortunately, experiments on the server are difficult, because it is 
used for everyday work.



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Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-09 Thread Gleb Natapov
On Tue, Jan 08, 2013 at 09:45:35PM +0100, Artur Samborski wrote:
 W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:
 On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:
 Hello,
 
 When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
 (Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:
 
 qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
 /storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso
 
 it freezes KVM with:
 
 KVM internal error. Suberror: 1
 emulation failure
 RAX=80b0d4c0 RBX=0009f000 RCX=c080
 RDX=
 RSI=d238 RDI= RBP=
 RSP=
 R8 = R9 = R10=
 R11=
 R12= R13= R14=
 R15=
 RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
 ES =   f300 DPL=3 DS16 [-WA]
 CS =0008   00209900 DPL=0 CS64 [--A]
 SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
 DS =0018   00c09300 DPL=0 DS   [-WA]
 FS =   f300 DPL=3 DS16 [-WA]
 GS =   f300 DPL=3 DS16 [-WA]
 LDT=   8200 DPL=0 LDT
 TR =   8b00 DPL=0 TSS64-busy
 GDT= 0009f080 0020
 IDT=  
 CR0=8011 CR2= CR3=0009c000 CR4=0030
 DR0= DR1= DR2=
 DR3=
 DR6=0ff0 DR7=0400
 EFER=0501
 Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
 ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 99 20 00 ff ff 00 00
 
 Artur,
 
 Can you check whether
 
 https://patchwork-mail.kernel.org/patch/1942681/
 
 fixes your problem
 
 
 Hi, thanks for the reply.
 
 Unfortunately, the patch does not help. Attempt to start FreeBSD
 amd64 via quemu-kvm with -smp parameter greater than 1 fails in
 exactly the same way as before.
 
 The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm package.
 
 Do I need some additional patches?
 
 
Can you try queue branch from kvm.git?

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Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-08 Thread Artur Samborski

W dniu 08.01.2013 00:00, Marcelo Tosatti pisze:

On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:

Hello,

When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
(Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:

qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
/storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso

it freezes KVM with:

KVM internal error. Suberror: 1
emulation failure
RAX=80b0d4c0 RBX=0009f000 RCX=c080
RDX=
RSI=d238 RDI= RBP=
RSP=
R8 = R9 = R10=
R11=
R12= R13= R14=
R15=
RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =   f300 DPL=3 DS16 [-WA]
CS =0008   00209900 DPL=0 CS64 [--A]
SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
DS =0018   00c09300 DPL=0 DS   [-WA]
FS =   f300 DPL=3 DS16 [-WA]
GS =   f300 DPL=3 DS16 [-WA]
LDT=   8200 DPL=0 LDT
TR =   8b00 DPL=0 TSS64-busy
GDT= 0009f080 0020
IDT=  
CR0=8011 CR2= CR3=0009c000 CR4=0030
DR0= DR1= DR2=
DR3=
DR6=0ff0 DR7=0400
EFER=0501
Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 99 20 00 ff ff 00 00


Artur,

Can you check whether

https://patchwork-mail.kernel.org/patch/1942681/

fixes your problem



Hi, thanks for the reply.

Unfortunately, the patch does not help. Attempt to start FreeBSD amd64 
via quemu-kvm with -smp parameter greater than 1 fails in exactly the 
same way as before.


The patch was applied to the kernel from the 3.6.11-1.fc17.src.rpm package.

Do I need some additional patches?


--
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FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-07 Thread Artur Samborski

Hello,

When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm (Fedora 
Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:


qemu-kvm -m 1024m -cpu host -smp 2 -cdrom 
/storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso


it freezes KVM with:

KVM internal error. Suberror: 1
emulation failure
RAX=80b0d4c0 RBX=0009f000 RCX=c080 
RDX=
RSI=d238 RDI= RBP= 
RSP=
R8 = R9 = R10= 
R11=
R12= R13= R14= 
R15=

RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =   f300 DPL=3 DS16 [-WA]
CS =0008   00209900 DPL=0 CS64 [--A]
SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
DS =0018   00c09300 DPL=0 DS   [-WA]
FS =   f300 DPL=3 DS16 [-WA]
GS =   f300 DPL=3 DS16 [-WA]
LDT=   8200 DPL=0 LDT
TR =   8b00 DPL=0 TSS64-busy
GDT= 0009f080 0020
IDT=  
CR0=8011 CR2= CR3=0009c000 CR4=0030
DR0= DR1= DR2= 
DR3=

DR6=0ff0 DR7=0400
EFER=0501
Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80 ff ff 
ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 99 20 00 
ff ff 00 00


Freeze occurs immediately after FreeBSD kernel messages:

Copyright (c) 1992-2012 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:46:30 UTC 2012
r...@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
CPU: Intel(R) Xeon(R) CPU   X5570  @ 2.93GHz (2925.91-MHz 
K8-class CPU)
  Origin = GenuineIntel  Id = 0x106a5  Family = 6  Model = 1a 
Stepping = 5


Features=0xf83fbffFPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2,SS
  Features2=0x80982201SSE3,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,HV
  AMD Features=0x28100800SYSCALL,NX,RDTSCP,LM
  AMD Features2=0x1LAHF
real memory  = 1073741824 (1024 MB)
avail memory = 1011343360 (964 MB)
Event timer LAPIC quality 400
ACPI APIC Table: BOCHS  BXPCAPIC

so just prior to probing of SMP.

This also applies to FreeBSD-7.3-RELEASE-amd64 and FreeBSD-9.1-RC3-amd64 
(other releases not tested).


When quemu-kvm is started without SMP (1 vpcu) amd64 FreeBSD kernel 
boots correctly. I did not notice this problem (SMP) for the i386 
versions (FreeBSD-7.3-RELEASE-i386, FreeBSD-9.0-RELEASE-i386, 
FreeBSD-9.1-RC3-i386).


Additional info:

- KVM Host OS:
Fedora Core 17

- CPUs on my KVM host -- Xeons X5570

# cat /proc/cpuinfo
processor   : 0
vendor_id   : GenuineIntel
cpu family  : 6
model   : 26
model name  : Intel(R) Xeon(R) CPU   X5570  @ 2.93GHz
stepping: 5
microcode   : 0x11
cpu MHz : 2926.183
cache size  : 8192 KB
physical id : 1
siblings: 8
core id : 0
cpu cores   : 4
apicid  : 16
initial apicid  : 16
fpu : yes
fpu_exception   : yes
cpuid level : 11
wp  : yes
flags   : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge 
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe 
syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl 
xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 
ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida dtherm 
tpr_shadow vnmi flexpriority ept vpid

bogomips: 5852.36
clflush size: 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

- kernel (from FC17 repo):
3.6.9 (kernel-3.6.9-2.fc17.x86_64)
- quemu version:
qemu-kvm 1.0.1 (qemu-kvm-1.0.1-2.fc17.x86_64)
- neither the -no-kvm-irqchip nor -no-kvm-pit switch helps
- with he -no-kvm switch FreeBSD boots correctly
- linux guest (x86_64 with SMP) works perfectly ok

I suspect that this bug is related in some way with the hardware. I 
tested the same KVM-host system (exact clone) with the same guest 
(FreeBSD-amd64) on another machine (i3-2120 workstation) and have not 
noticed a similar problems witch SMP.


I will be grateful for any hints.

Regards,
Artur Samborski
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Re: FreeBSD-amd64 fails to start with SMP on quemu-kvm

2013-01-07 Thread Marcelo Tosatti
On Mon, Jan 07, 2013 at 06:13:22PM +0100, Artur Samborski wrote:
 Hello,
 
 When i try to run FreeBSD-amd64 on more than 1 vcpu in quemu-kvm
 (Fedora Core 17) eg. to run FreeBSD-9.0-RELEASE-amd64 with:
 
 qemu-kvm -m 1024m -cpu host -smp 2 -cdrom
 /storage/iso/FreeBSD-9.0-RELEASE-amd64-dvd1.iso
 
 it freezes KVM with:
 
 KVM internal error. Suberror: 1
 emulation failure
 RAX=80b0d4c0 RBX=0009f000 RCX=c080
 RDX=
 RSI=d238 RDI= RBP=
 RSP=
 R8 = R9 = R10=
 R11=
 R12= R13= R14=
 R15=
 RIP=0009f076 RFL=00010086 [--S--P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
 ES =   f300 DPL=3 DS16 [-WA]
 CS =0008   00209900 DPL=0 CS64 [--A]
 SS =9f00 0009f000  f300 DPL=3 DS16 [-WA]
 DS =0018   00c09300 DPL=0 DS   [-WA]
 FS =   f300 DPL=3 DS16 [-WA]
 GS =   f300 DPL=3 DS16 [-WA]
 LDT=   8200 DPL=0 LDT
 TR =   8b00 DPL=0 TSS64-busy
 GDT= 0009f080 0020
 IDT=  
 CR0=8011 CR2= CR3=0009c000 CR4=0030
 DR0= DR1= DR2=
 DR3=
 DR6=0ff0 DR7=0400
 EFER=0501
 Code=00 00 00 80 0f 22 c0 ea 70 f0 09 00 08 00 48 b8 c0 d4 b0 80
 ff ff ff ff ff e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 00 99 20 00 ff ff 00 00

Artur,

Can you check whether 

https://patchwork-mail.kernel.org/patch/1942681/

fixes your problem

TIA

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