From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 93251] qemu-kvm guests randomly hangs after reboot command in
 guest
Date: Wed, 25 Feb 2015 22:49:47 +0000
Message-ID: <bug-93251-28872-0TqROAzX5m@https.bugzilla.kernel.org/>
References: <bug-93251-28872@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=3D93251

Marcelo Tosatti <mtosatti@redhat.com> changed:

           What    |Removed                     |Added
-----------------------------------------------------------------------=
-----
                 CC|                            |mtosatti@redhat.com

--- Comment #2 from Marcelo Tosatti <mtosatti@redhat.com> ---
(In reply to Ond=C5=99ej S=C3=BAkup from comment #1)
> I run about 7 nodes, an simulate build of openstack cloud in qemu-kvm=
 env ..
>=20
> nodes randomly after reboot stop working, or hangs in few sec after r=
eboot=20
>=20
>=20
> from journalctl:
>=20
> =C3=BAno 13 18:10:22 argus kernel: qemu-system-x86: page allocation f=
ailure:
> order:4, mode:0x40d0
> =C3=BAno 13 18:10:23 argus kernel: CPU: 2 PID: 2731 Comm: qemu-system=
-x86 Not
> tainted 3.19.0-gentoo #2
> =C3=BAno 13 18:10:27 argus kernel: Hardware name: Dell Inc. OptiPlex =
9010/0M9KCM,
> BIOS A19 08/18/2014
> =C3=BAno 13 18:10:27 argus kernel:  0000000000000004 00000000a9baffad
> 0000000000000000 ffffffff9d5cdf0c
> =C3=BAno 13 18:10:27 argus kernel:  00000000000040d0 ffffffff9d0d5f1e
> 0000000000000040 0000000000000000
> =C3=BAno 13 18:10:27 argus kernel:  ffffffff9d807080 ffffffff9d0d8dda
> ffffffff9d806180 00000000a9baffad
> =C3=BAno 13 18:10:27 argus kernel: Call Trace:
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d5cdf0c>] ? dump_stack=
+0x47/0x67
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d5f1e>] ?
> warn_alloc_failed+0xee/0x150
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d8dda>] ?
> __alloc_pages_direct_compact+0x14a/0x150
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d9556>] ?
> __alloc_pages_nodemask+0x776/0xb80
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d9a3a>] ?
> alloc_kmem_pages+0x3a/0x110
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0ee4e3>] ? kmalloc_or=
der+0x13/0x50
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0e954b>] ? kmemdup+0x=
1b/0x40
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0aeb1fa>] ?
> __kvm_set_memory_region+0x24a/0x9f0 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0b154b0>] ?
> kvm_set_ioapic+0x130/0x130 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0aeb9c1>] ?
> kvm_set_memory_region+0x21/0x40 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0aebe1f>] ?
> kvm_vm_ioctl+0x43f/0x750 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d2ef4eb>] ?
> blk_finish_plug+0xb/0x40
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d10ae75>] ? SyS_madvis=
e+0x3c5/0x800
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d07ca71>] ?
> cpuacct_account_field+0x11/0x60
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d147748>] ?
> do_vfs_ioctl+0x308/0x510
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d06ce3f>] ?
> vtime_account_user+0x3f/0x60
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d151423>] ? __fget+0x6=
3/0xa0
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d147986>] ? SyS_ioctl+=
0x36/0x80
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d5d453d>] ?
> int_check_syscall_exit_work+0x34/0x3d
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d5d4312>] ?
> system_call_fastpath+0x12/0x17
> =C3=BAno 13 18:10:27 argus kernel: Mem-Info:
> =C3=BAno 13 18:10:27 argus kernel: DMA per-cpu:
> =C3=BAno 13 18:10:27 argus kernel: CPU    0: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    1: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    2: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    3: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    4: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    5: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    6: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    7: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: DMA32 per-cpu:
> =C3=BAno 13 18:10:27 argus kernel: CPU    0: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    1: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    2: hi:  186, btch:  31 usd:=
  22
> =C3=BAno 13 18:10:27 argus kernel: CPU    3: hi:  186, btch:  31 usd:=
 170
> =C3=BAno 13 18:10:27 argus kernel: CPU    4: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    5: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    6: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    7: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: Normal per-cpu:
> =C3=BAno 13 18:10:27 argus kernel: CPU    0: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    1: hi:  186, btch:  31 usd:=
  30
> =C3=BAno 13 18:10:27 argus kernel: CPU    2: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    3: hi:  186, btch:  31 usd:=
 161
> =C3=BAno 13 18:10:27 argus kernel: CPU    4: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    5: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    6: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    7: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: active_anon:2109969 inactive_anon:=
930082
> isolated_anon:0
>                                 active_file:318968 inactive_file:4667=
19
> isolated_file:0
>                                 unevictable:0 dirty:134084 writeback:=
3211
> unstable:0
>                                 free:47211 slab_reclaimable:45577
> slab_unreclaimable:74482
>                                 mapped:47028 shmem:382256 pagetables:=
23493
> bounce:0
>                                 free_cma:43
> =C3=BAno 13 18:10:27 argus kernel: DMA free:15884kB min:64kB low:80kB=
 high:96kB
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB
> unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15984kB
> managed:15900kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:=
0kB
> slab_reclaimable:0kB slab_unreclaimable:16kB kernel_stack:0kB pagetab=
les:0kB
> unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:=
0
> all_unreclaimable? yes
> =C3=BAno 13 18:10:27 argus kernel: lowmem_reserve[]: 0 3541 16027 160=
27
> =C3=BAno 13 18:10:27 argus kernel: DMA32 free:91084kB min:14916kB low=
:18644kB
> high:22372kB active_anon:1060260kB inactive_anon:907560kB
> active_file:510928kB inactive_file:846884kB unevictable:0kB
> isolated(anon):0kB isolated(file):0kB present:3636052kB managed:36272=
20kB
> mlocked:0kB dirty:225504kB writeback:7144kB mapped:55956kB shmem:3314=
00kB
> slab_reclaimable:63684kB slab_unreclaimable:43356kB kernel_stack:6464=
kB
> pagetables:14680kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp=
:0kB
> pages_scanned:0 all_unreclaimable? no
> =C3=BAno 13 18:10:27 argus kernel: lowmem_reserve[]: 0 0 12485 12485
> =C3=BAno 13 18:10:27 argus kernel: Normal free:81876kB min:52596kB lo=
w:65744kB
> high:78892kB active_anon:7379616kB inactive_anon:2812768kB
> active_file:764944kB inactive_file:1019992kB unevictable:0kB
> isolated(anon):0kB isolated(file):0kB present:13074432kB managed:1278=
5460kB
> mlocked:0kB dirty:310832kB writeback:5700kB mapped:132156kB shmem:119=
7624kB
> slab_reclaimable:118624kB slab_unreclaimable:254556kB kernel_stack:10=
000kB
> pagetables:79292kB unstable:0kB bounce:0kB free_cma:172kB writeback_t=
mp:0kB
> pages_scanned:0 all_unreclaimable? no
> =C3=BAno 13 18:10:27 argus kernel: lowmem_reserve[]: 0 0 0 0
> =C3=BAno 13 18:10:27 argus kernel: DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*=
32kB 2*64kB
> (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096k=
B (M) =3D
> 15884kB
> =C3=BAno 13 18:10:27 argus kernel: DMA32: 20459*4kB (UEM) 766*8kB (UE=
M) 44*16kB
> (UEM) 25*32kB (UEMR) 7*64kB (UR) 3*128kB (UMR) 1*256kB (R) 1*512kB (R=
)
> 1*1024kB (R) 0*2048kB 0*4096kB =3D 92092kB
> =C3=BAno 13 18:10:27 argus kernel: Normal: 18555*4kB (UEMC) 145*8kB (=
UMC) 92*16kB
> (UM) 54*32kB (UM) 40*64kB (UM) 9*128kB (UM) 2*256kB (U) 0*512kB 0*102=
4kB
> 0*2048kB 0*4096kB =3D 82804kB=C3=BAno 13 18:10:22 argus kernel: qemu-=
system-x86:
> page allocation failure: order:4, mode:0x40d0
> =C3=BAno 13 18:10:23 argus kernel: CPU: 2 PID: 2731 Comm: qemu-system=
-x86 Not
> tainted 3.19.0-gentoo #2
> =C3=BAno 13 18:10:27 argus kernel: Hardware name: Dell Inc. OptiPlex =
9010/0M9KCM,
> BIOS A19 08/18/2014
> =C3=BAno 13 18:10:27 argus kernel:  0000000000000004 00000000a9baffad
> 0000000000000000 ffffffff9d5cdf0c
> =C3=BAno 13 18:10:27 argus kernel:  00000000000040d0 ffffffff9d0d5f1e
> 0000000000000040 0000000000000000
> =C3=BAno 13 18:10:27 argus kernel:  ffffffff9d807080 ffffffff9d0d8dda
> ffffffff9d806180 00000000a9baffad
> =C3=BAno 13 18:10:27 argus kernel: Call Trace:
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d5cdf0c>] ? dump_stack=
+0x47/0x67
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d5f1e>] ?
> warn_alloc_failed+0xee/0x150
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d8dda>] ?
> __alloc_pages_direct_compact+0x14a/0x150
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d9556>] ?
> __alloc_pages_nodemask+0x776/0xb80
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0d9a3a>] ?
> alloc_kmem_pages+0x3a/0x110
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0ee4e3>] ? kmalloc_or=
der+0x13/0x50
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d0e954b>] ? kmemdup+0x=
1b/0x40
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0aeb1fa>] ?
> __kvm_set_memory_region+0x24a/0x9f0 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0b154b0>] ?
> kvm_set_ioapic+0x130/0x130 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0aeb9c1>] ?
> kvm_set_memory_region+0x21/0x40 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffffc0aebe1f>] ?
> kvm_vm_ioctl+0x43f/0x750 [kvm]
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d2ef4eb>] ?
> blk_finish_plug+0xb/0x40
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d10ae75>] ? SyS_madvis=
e+0x3c5/0x800
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d07ca71>] ?
> cpuacct_account_field+0x11/0x60
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d147748>] ?
> do_vfs_ioctl+0x308/0x510
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d06ce3f>] ?
> vtime_account_user+0x3f/0x60
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d151423>] ? __fget+0x6=
3/0xa0
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d147986>] ? SyS_ioctl+=
0x36/0x80
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d5d453d>] ?
> int_check_syscall_exit_work+0x34/0x3d
> =C3=BAno 13 18:10:27 argus kernel:  [<ffffffff9d5d4312>] ?
> system_call_fastpath+0x12/0x17
> =C3=BAno 13 18:10:27 argus kernel: Mem-Info:
> =C3=BAno 13 18:10:27 argus kernel: DMA per-cpu:
> =C3=BAno 13 18:10:27 argus kernel: CPU    0: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    1: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    2: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    3: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    4: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    5: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    6: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    7: hi:    0, btch:   1 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: DMA32 per-cpu:
> =C3=BAno 13 18:10:27 argus kernel: CPU    0: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    1: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    2: hi:  186, btch:  31 usd:=
  22
> =C3=BAno 13 18:10:27 argus kernel: CPU    3: hi:  186, btch:  31 usd:=
 170
> =C3=BAno 13 18:10:27 argus kernel: CPU    4: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    5: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    6: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    7: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: Normal per-cpu:
> =C3=BAno 13 18:10:27 argus kernel: CPU    0: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    1: hi:  186, btch:  31 usd:=
  30
> =C3=BAno 13 18:10:27 argus kernel: CPU    2: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    3: hi:  186, btch:  31 usd:=
 161
> =C3=BAno 13 18:10:27 argus kernel: CPU    4: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    5: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    6: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: CPU    7: hi:  186, btch:  31 usd:=
   0
> =C3=BAno 13 18:10:27 argus kernel: active_anon:2109969 inactive_anon:=
930082
> isolated_anon:0
>                                 active_file:318968 inactive_file:4667=
19
> isolated_file:0
>                                 unevictable:0 dirty:134084 writeback:=
3211
> unstable:0
>                                 free:47211 slab_reclaimable:45577
> slab_unreclaimable:74482
>                                 mapped:47028 shmem:382256 pagetables:=
23493
> bounce:0
>                                 free_cma:43
> =C3=BAno 13 18:10:27 argus kernel: DMA free:15884kB min:64kB low:80kB=
 high:96kB
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB
> unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15984kB
> managed:15900kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:=
0kB
> slab_reclaimable:0kB slab_unreclaimable:16kB kernel_stack:0kB pagetab=
les:0kB
> unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:=
0
> all_unreclaimable? yes
> =C3=BAno 13 18:10:27 argus kernel: lowmem_reserve[]: 0 3541 16027 160=
27
> =C3=BAno 13 18:10:27 argus kernel: DMA32 free:91084kB min:14916kB low=
:18644kB
> high:22372kB active_anon:1060260kB inactive_anon:907560kB
> active_file:510928kB inactive_file:846884kB unevictable:0kB
> isolated(anon):0kB isolated(file):0kB present:3636052kB managed:36272=
20kB
> mlocked:0kB dirty:225504kB writeback:7144kB mapped:55956kB shmem:3314=
00kB
> slab_reclaimable:63684kB slab_unreclaimable:43356kB kernel_stack:6464=
kB
> pagetables:14680kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp=
:0kB
> pages_scanned:0 all_unreclaimable? no
> =C3=BAno 13 18:10:27 argus kernel: lowmem_reserve[]: 0 0 12485 12485
> =C3=BAno 13 18:10:27 argus kernel: Normal free:81876kB min:52596kB lo=
w:65744kB
> high:78892kB active_anon:7379616kB inactive_anon:2812768kB
> active_file:764944kB inactive_file:1019992kB unevictable:0kB
> isolated(anon):0kB isolated(file):0kB present:13074432kB managed:1278=
5460kB
> mlocked:0kB dirty:310832kB writeback:5700kB mapped:132156kB shmem:119=
7624kB
> slab_reclaimable:118624kB slab_unreclaimable:254556kB kernel_stack:10=
000kB
> pagetables:79292kB unstable:0kB bounce:0kB free_cma:172kB writeback_t=
mp:0kB
> pages_scanned:0 all_unreclaimable? no
> =C3=BAno 13 18:10:27 argus kernel: lowmem_reserve[]: 0 0 0 0
> =C3=BAno 13 18:10:27 argus kernel: DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*=
32kB 2*64kB
> (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096k=
B (M) =3D
> 15884kB
> =C3=BAno 13 18:10:27 argus kernel: DMA32: 20459*4kB (UEM) 766*8kB (UE=
M) 44*16kB
> (UEM) 25*32kB (UEMR) 7*64kB (UR) 3*128kB (UMR) 1*256kB (R) 1*512kB (R=
)
> 1*1024kB (R) 0*2048kB 0*4096kB =3D 92092kB
> =C3=BAno 13 18:10:27 argus kernel: Normal: 18555*4kB (UEMC) 145*8kB (=
UMC) 92*16kB
> (UM) 54*32kB (UM) 40*64kB (UM) 9*128kB (UM) 2*256kB (U) 0*512kB 0*102=
4kB
> 0*2048kB 0*4096kB =3D 82804kB
> =C3=BAno 13 18:10:27 argus kernel: Node 0 hugepages_total=3D0 hugepag=
es_free=3D0
> hugepages_surp=3D0 hugepages_size=3D2048kB
> =C3=BAno 13 18:10:27 argus kernel: 1170782 total pagecache pages
> =C3=BAno 13 18:10:27 argus kernel: 2872 pages in swap cache
> =C3=BAno 13 18:10:27 argus kernel: Swap cache stats: add 111188, dele=
te 108316,
> find 46841/51516
> =C3=BAno 13 18:10:27 argus kernel: Free swap  =3D 15734048kB
> =C3=BAno 13 18:10:27 argus kernel: Total swap =3D 16000736kB
> =C3=BAno 13 18:10:27 argus kernel: 4181617 pages RAM
> =C3=BAno 13 18:10:27 argus kernel: 0 pages HighMem/MovableOnly
> =C3=BAno 13 18:10:27 argus kernel: 18446744073709207272 pages reserve=
d
> =C3=BAno 13 18:10:27 argus kernel: 418816 pages cma reserved
> =C3=BAno 13 18:10:27 argus kernel: 0 pages hwpoisoned
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled rdmsr:=
 0x345
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled wrmsr:=
 0x40 data 0
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled wrmsr:=
 0x60 data 0
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled wrmsr:=
 0x41 data 0
>=20
> =C3=BAno 13 18:10:27 argus kernel: Node 0 hugepages_total=3D0 hugepag=
es_free=3D0
> hugepages_surp=3D0 hugepages_size=3D2048kB
> =C3=BAno 13 18:10:27 argus kernel: 1170782 total pagecache pages
> =C3=BAno 13 18:10:27 argus kernel: 2872 pages in swap cache
> =C3=BAno 13 18:10:27 argus kernel: Swap cache stats: add 111188, dele=
te 108316,
> find 46841/51516
> =C3=BAno 13 18:10:27 argus kernel: Free swap  =3D 15734048kB
> =C3=BAno 13 18:10:27 argus kernel: Total swap =3D 16000736kB
> =C3=BAno 13 18:10:27 argus kernel: 4181617 pages RAM
> =C3=BAno 13 18:10:27 argus kernel: 0 pages HighMem/MovableOnly
> =C3=BAno 13 18:10:27 argus kernel: 18446744073709207272 pages reserve=
d
> =C3=BAno 13 18:10:27 argus kernel: 418816 pages cma reserved
> =C3=BAno 13 18:10:27 argus kernel: 0 pages hwpoisoned
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled rdmsr:=
 0x345
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled wrmsr:=
 0x40 data 0
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled wrmsr:=
 0x60 data 0
> =C3=BAno 13 18:10:27 argus kernel: kvm [2656]: vcpu0 unhandled wrmsr:=
 0x41 data 0
>=20
>=20
> and this :
>=20
> =C3=BAno 13 18:28:00 argus kernel: ------------[ cut here ]----------=
--
> =C3=BAno 13 18:28:00 argus kernel: WARNING: CPU: 0 PID: 8969 at
> arch/x86/kernel/cpu/perf_event_intel_ds.c:315
> reserve_ds_buffers+0x394/0x3d0()
> =C3=BAno 13 18:28:00 argus kernel: alloc_bts_buffer: BTS buffer alloc=
ation failure
> =C3=BAno 13 18:28:00 argus kernel: Modules linked in: 8021q garp mrp =
vhost_net
> vhost macvtap macvlan xt_CHECKSUM iptable_mangle ipt_MASQUERADE
> nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ip=
v4
> nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt=
_tcpudp
> tun bridge stp llc dm_mod ebtable_filter ebtables ip6table_filter ip6=
_tables
> iptable_filter ip_tables x_tables x86_pkg_temp_thermal intel_powercla=
mp
> coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel
> ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper
> ablk_helper cryptd radeon i2c_algo_bit drm_kms_helper ttm drm
> snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iTCO_w=
dt
> dcdbas iTCO_vendor_support snd_hda_intel snd_hda_controller ehci_pci
> ehci_hcd snd_hda_codec thermal tpm_tis video backlight
> =C3=BAno 13 18:28:00 argus kernel:  xhci_pci xhci_hcd microcode tpm s=
nd_hwdep
> processor thermal_sys snd_pcm i2c_i801 i2c_core lpc_ich snd_timer mfd=
_core
> button snd pcspkr sch_fq_codel ipv6
> =C3=BAno 13 18:28:00 argus kernel: CPU: 0 PID: 8969 Comm: qemu-system=
-x86 Not
> tainted 3.19.0-gentoo #2
> =C3=BAno 13 18:28:00 argus kernel: Hardware name: Dell Inc. OptiPlex =
9010/0M9KCM,
> BIOS A19 08/18/2014
> =C3=BAno 13 18:28:00 argus kernel:  ffffffff9d6ed918 000000009cac10c2
> ffffffff9d6ed918 ffffffff9d5cdf0c
> =C3=BAno 13 18:28:00 argus kernel:  ffff880153ab7aa0 ffffffff9d045fd7
> 0000000000000000 0000000000000000
> =C3=BAno 13 18:28:00 argus kernel:  ffffffff9d80b7e0 0000000000000000
> 000000000000abc0 ffffffff9d046068
> =C3=BAno 13 18:28:00 argus kernel: Call Trace:
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d5cdf0c>] ? dump_stack=
+0x47/0x67
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d045fd7>] ?
> warn_slowpath_common+0x77/0xb0
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d046068>] ?
> warn_slowpath_fmt+0x58/0x80
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d01b904>] ?
> reserve_ds_buffers+0x394/0x3d0
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d01625f>] ?
> x86_pmu_event_init+0x40f/0x420
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d0cb862>] ?
> perf_init_event+0xf2/0x160
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d0cbc38>] ?
> perf_event_alloc+0x368/0x420
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffffc0b175c0>] ?
> kvm_perf_overflow+0x30/0x30 [kvm]
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffff9d0cc921>] ?
> perf_event_create_kernel_counter+0x21/0x110
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffffc0b1727a>] ?
> reprogram_counter+0xda/0x140 [kvm]
> =C3=BAno 13 18:28:00 argus kernel:  [<ffffffffc0b1736b>] ?
> reprogram_fixed_counter+0x8b/0xa0 [kvm]
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffffc0b17f99>] ?
> kvm_handle_pmu_event+0x59/0xc0 [kvm]
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffffc0af4c77>] ?
> vcpu_enter_guest+0x2f7/0xc60 [kvm]
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d5d4fd0>] ? retint_ker=
nel+0x20/0x30
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffffc0de23e0>] ?
> vmx_set_tsc_khz+0x50/0x50 [kvm_intel]
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffffc0af9458>] ?
> kvm_arch_vcpu_ioctl_run+0x1f8/0x490 [kvm]
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffffc0aea1e8>] ?
> kvm_vcpu_ioctl+0x338/0x5a0 [kvm]
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d07ca71>] ?
> cpuacct_account_field+0x11/0x60
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d147748>] ?
> do_vfs_ioctl+0x308/0x510
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d06ce3f>] ?
> vtime_account_user+0x3f/0x60
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d151423>] ? __fget+0x6=
3/0xa0
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d147986>] ? SyS_ioctl+=
0x36/0x80
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d5d4558>] ? int_signal=
+0x12/0x17
> =C3=BAno 13 18:28:01 argus kernel:  [<ffffffff9d5d4312>] ?
> system_call_fastpath+0x12/0x17
> =C3=BAno 13 18:28:01 argus kernel: ---[ end trace 57619b624d89e2e8 ]-=
--

Ondrej,

Can you please revert the following commit and confirm whether the prob=
lem is=20
still visible:

commit 1d4e7e3c0bca747d0fc54069a6ab8393349431c0
Author: Igor Mammedov <imammedo@redhat.com>
Date:   Thu Nov 6 15:52:47 2014 +0000

    kvm: x86: increase user memory slots to 509

--=20
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