regression: massive trouble with fpu rework

From: Mike Galbraith
Date: Sat Jun 27 2015 - 02:26:04 EST


Hi Ingo,

My i7-4790 box is having one hell of a time with this merge window, is
dead in the water. The netconsole log below is v4.1-7254-gc13c81006314,
but trouble begins at bisected point much earlier. If I turn off kvm,
such that I can kinda sorta boot, systemd says many services "enter
failed state", box is pretty much a doorstop. Though I can get to a
prompt, I can't login. If kvm is enabled, it explodes as soon as it
autoloads (wtf does it do that when it's not being used?)

Bisecting to the beginning of my woes takes me to the below. Before
that, it doesn't matter if kvm is enabled or not, all is well. Below
the current gripage with kvm disabled, find the kvm explosion, and
another explosion as I approach the beginning of my box's woes.

067051ccd209623cb56152cf4cb06616ee2bcc5c is the first bad commit
commit 067051ccd209623cb56152cf4cb06616ee2bcc5c
Author: Ingo Molnar <mingo@xxxxxxxxxx>
Date: Sat Apr 25 08:27:44 2015 +0200

x86/fpu: Do system-wide setup from fpu__detect()

fpu__cpu_init() is called on every CPU, so it is the wrong place
to call fpu__init_system() from. Call it from fpu__detect():
this is early CPU init code, but we already have CPU features detected,
so we can call the system-wide FPU init code from here.

Reviewed-by: Borislav Petkov <bp@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>

:040000 040000 b85f9a16eea19a4ec974c00ea53144a3d11d4e99 697905b73e3f8931a28588c728da3ab1a7289afa M arch

git bisect start
# good: [cfe3eceb7a2eb91284d5605c5315249bb165e9d3] Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good cfe3eceb7a2eb91284d5605c5315249bb165e9d3
# bad: [650ec5a6bd5df4ab0c9ef38d05b94cd82fb99ad8] Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 650ec5a6bd5df4ab0c9ef38d05b94cd82fb99ad8
# bad: [c4d6ee6e2e52ec604cc1d76877791f8e8f5c79b5] x86/fpu: Remove failure paths from fpstate-alloc low level functions
git bisect bad c4d6ee6e2e52ec604cc1d76877791f8e8f5c79b5
# good: [db2b1d3ad1cdae9f268d6db54b6127b09933da3d] x86/fpu: Use 'struct fpu' in fpstate_alloc_init()
git bisect good db2b1d3ad1cdae9f268d6db54b6127b09933da3d
# good: [e9dbfd673a9cc9d3ef90e3ea4e136a833dab3674] x86/fpu: Move legacy check to fpu__init_system_xstate()
git bisect good e9dbfd673a9cc9d3ef90e3ea4e136a833dab3674
# bad: [7218e8b723dc9ceb71cf2fbd3d019e9e11b7d3cf] x86/fpu: Factor out fpu__init_system_generic()
git bisect bad 7218e8b723dc9ceb71cf2fbd3d019e9e11b7d3cf
# good: [064e51e3c8aee6cfb03ab75e9f9551db3924eb07] x86/fpu: Clean up eager_fpu_init() and rename it to fpu__ctx_switch_init()
git bisect good 064e51e3c8aee6cfb03ab75e9f9551db3924eb07
# good: [3960fccf2e22c3b3d61bd5a45b6172e66e660d8b] x86/fpu: Call fpu__init_cpu_ctx_switch() from fpu__init_cpu()
git bisect good 3960fccf2e22c3b3d61bd5a45b6172e66e660d8b
# bad: [7202ab46f7392265c1ecbf03f600393bf32a8bdf] x86/fpu: Remove fpu__init_cpu_ctx_switch() call from fpu__init_system()
git bisect bad 7202ab46f7392265c1ecbf03f600393bf32a8bdf
# bad: [067051ccd209623cb56152cf4cb06616ee2bcc5c] x86/fpu: Do system-wide setup from fpu__detect()
git bisect bad 067051ccd209623cb56152cf4cb06616ee2bcc5c
# first bad commit: [067051ccd209623cb56152cf4cb06616ee2bcc5c] x86/fpu: Do system-wide setup from fpu__detect()


[ 2.411280] ------------[ cut here ]------------
[ 2.412198] WARNING: CPU: 3 PID: 1 at ./arch/x86/include/asm/fpu/internal.h:366 copy_kernel_to_xregs.part.8+0x1e/0x27()
[ 2.413132] Modules linked in:
[ 2.414003] CPU: 3 PID: 1 Comm: init Tainted: G W 4.1.0-master #279
[ 2.414872] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 2.415745] ffffffff817f8db8 ffff88040c91fea8 ffffffff8159726c 0000000000000001
[ 2.416633] 0000000000000000 ffff88040c91fee8 ffffffff81052bca 00000000ffffffff
[ 2.417524] ffff88040ca18600 ffff88040ca18600 0000000000000000 00007f77d5254148
[ 2.418411] Call Trace:
[ 2.419286] [<ffffffff8159726c>] dump_stack+0x45/0x57
[ 2.420159] [<ffffffff81052bca>] warn_slowpath_common+0x8a/0xc0
[ 2.421017] [<ffffffff81052cba>] warn_slowpath_null+0x1a/0x20
[ 2.421860] [<ffffffff81591bf5>] copy_kernel_to_xregs.part.8+0x1e/0x27
[ 2.422702] [<ffffffff8100dfe9>] fpu__restore+0xf9/0x100
[ 2.423536] [<ffffffff810045c3>] do_device_not_available+0x33/0x40
[ 2.424356] [<ffffffff8159f178>] device_not_available+0x18/0x20
[ 2.425159] ---[ end trace cb88537fdc8fa202 ]---
[ 2.426492] ------------[ cut here ]------------
[ 2.427289] WARNING: CPU: 3 PID: 1 at ./arch/x86/include/asm/fpu/internal.h:337 __switch_to+0x586/0x5d0()
[ 2.428100] Modules linked in:
[ 2.428907] CPU: 3 PID: 1 Comm: systemd Tainted: G W 4.1.0-master #279
[ 2.429943] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 2.431370] ffffffff817f8db8 ffff880409a0fd10 ffffffff8159726c 0000000000000001
[ 2.432801] 0000000000000000 ffff880409a0fd50 ffffffff81052bca ffff88040ca185c0
[ 2.434233] ffff880409a01c80 ffff88040ca18000 ffff88041ecd2080 0000000000000003
[ 2.435662] Call Trace:
[ 2.437067] <UNK>
[ 2.437077] ---[ end trace cb88537fdc8fa203 ]---
[ 2.440704] random: systemd urandom read with 49 bits of entropy available
[ 2.441642] systemd[1]: systemd 210 running in system mode. (+PAM -LIBWRAP +AUDIT +SELINUX -IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ +SECCOMP +APPARMOR)
[ 2.442612] systemd[1]: Detected architecture 'x86-64'.
[ 2.443411] systemd[1]: Running in initial RAM disk.
[ 2.447158] systemd[1]: Inserted module 'autofs4'
[ 2.448014] systemd[1]: Set hostname to <homer>.
[ 2.449122] ------------[ cut here ]------------
[ 2.449964] WARNING: CPU: 2 PID: 1 at ./arch/x86/include/asm/fpu/internal.h:337 fpu__copy+0xd3/0x120()
[ 2.450785] Modules linked in: autofs4
[ 2.451591] CPU: 2 PID: 1 Comm: systemd Tainted: G W 4.1.0-master #279
[ 2.452404] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 2.453215] ffffffff817f8db8 ffff88040c91fd58 ffffffff8159726c 0000000000000001
[ 2.454025] 0000000000000000 ffff88040c91fd98 ffffffff81052bca 00000000ffffffff
[ 2.454810] ffff8800dca5a280 ffff88040ca18000 0000000000000000 ffff8800dca59c80
[ 2.455590] Call Trace:
[ 2.456363] [<ffffffff8159726c>] dump_stack+0x45/0x57
[ 2.457121] [<ffffffff81052bca>] warn_slowpath_common+0x8a/0xc0
[ 2.457867] [<ffffffff81052cba>] warn_slowpath_null+0x1a/0x20
[ 2.458595] [<ffffffff8100e193>] fpu__copy+0xd3/0x120
[ 2.459312] [<ffffffff8100d48e>] arch_dup_task_struct+0x2e/0x40
[ 2.460015] [<ffffffff810509a0>] copy_process.part.42+0x120/0x1710
[ 2.460721] [<ffffffff8116df05>] ? __sb_end_write+0x35/0x70
[ 2.461418] [<ffffffff8117d69a>] ? iterate_dir+0x5a/0x110
[ 2.462114] [<ffffffff81052145>] do_fork+0xd5/0x330
[ 2.462798] [<ffffffff8117db4d>] ? SyS_getdents+0x9d/0xe0
[ 2.463475] [<ffffffff8117d820>] ? fillonedir+0xd0/0xd0
[ 2.464144] [<ffffffff81052426>] SyS_clone+0x16/0x20
[ 2.464815] [<ffffffff8159d9db>] entry_SYSCALL_64_fastpath+0x16/0x6e
[ 2.465479] ---[ end trace cb88537fdc8fa204 ]---
[ 2.469752] ------------[ cut here ]------------
[ 2.470483] WARNING: CPU: 1 PID: 98 at ./arch/x86/include/asm/fpu/internal.h:366 copy_kernel_to_xregs.part.0+0x1e/0x27()
[ 2.471173] Modules linked in: autofs4
[ 2.471834] CPU: 1 PID: 98 Comm: dracut-rootfs-g Tainted: G W 4.1.0-master #279
[ 2.472502] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 2.473169] ffffffff817f8db8 ffff880409be3da0 ffffffff8159726c 0000000000000001
[ 2.473844] 0000000000000000 ffff880409be3de0 ffffffff81052bca 0000000000000003
[ 2.474515] 00007ffdf76bc580 ffff880409b75b80 ffff880409b75b80 ffff880409b75580
[ 2.475182] Call Trace:
[ 2.475841] [<ffffffff8159726c>] dump_stack+0x45/0x57
[ 2.476505] [<ffffffff81052bca>] warn_slowpath_common+0x8a/0xc0
[ 2.477177] [<ffffffff81052cba>] warn_slowpath_null+0x1a/0x20
[ 2.477838] [<ffffffff81591c43>] copy_kernel_to_xregs.part.0+0x1e/0x27
[ 2.478500] [<ffffffff8100ef11>] __fpu__restore_sig+0x251/0x3f0
[ 2.479162] [<ffffffff810551ca>] ? do_wait+0x11a/0x220
[ 2.479822] [<ffffffff8105cbef>] ? recalc_sigpending+0x1f/0x60
[ 2.480485] [<ffffffff8100f2cd>] fpu__restore_sig+0x4d/0x60
[ 2.481148] [<ffffffff81003282>] restore_sigcontext+0x132/0x150
[ 2.481796] [<ffffffff81003f6d>] sys_rt_sigreturn+0x9d/0xc0
[ 2.482437] [<ffffffff8159dd33>] stub_rt_sigreturn+0x23/0x23
[ 2.483071] [<ffffffff8159d9db>] ? entry_SYSCALL_64_fastpath+0x16/0x6e
[ 2.483702] ---[ end trace cb88537fdc8fa205 ]---
[ 2.501200] ------------[ cut here ]------------
[ 2.501925] WARNING: CPU: 2 PID: 0 at ./arch/x86/include/asm/fpu/internal.h:366 __switch_to+0x3dc/0x5d0()
[ 2.502603] Modules linked in: autofs4
[ 2.503242] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G W 4.1.0-master #279
[ 2.503905] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 2.504576] ffffffff817f8db8 ffff88040c91fd00 ffffffff8159726c 0000000000000001
[ 2.505253] 0000000000000000 ffff88040c91fd40 ffffffff81052bca 00000000c0000100
[ 2.505901] ffff88040ca18000 ffff88040ca5b900 ffff88041ec92080 ffff88040ca18600
[ 2.506530] Call Trace:
[ 2.507149] <UNK>
[ 2.507155] ---[ end trace cb88537fdc8fa206 ]---
[ 2.510183] systemd[1]: Expecting device dev-disk-by\x2duuid-63d8c9f4\x2dc094\x2d4dd8\x2d96cd\x2d23c5e91d0322.device...
[ 2.511523] systemd[1]: Starting Timers.
[ 2.512962] systemd[1]: Reached target Timers.
[ 2.513608] systemd[1]: Starting -.slice.
[ 2.514900] systemd[1]: Created slice -.slice.
[ 2.515520] systemd[1]: Starting udev Control Socket.
[ 2.516849] systemd[1]: Listening on udev Control Socket.
[ 2.517473] systemd[1]: Starting udev Kernel Socket.
[ 2.518737] systemd[1]: Listening on udev Kernel Socket.
[ 2.519351] systemd[1]: Starting Journal Socket.
[ 2.520683] systemd[1]: Listening on Journal Socket.
[ 2.521321] systemd[1]: Starting Sockets.
[ 2.522595] systemd[1]: Reached target Sockets.
[ 2.523218] systemd[1]: Starting System Slice.
[ 2.524566] systemd[1]: Created slice System Slice.
[ 2.525247] systemd[1]: Starting dracut cmdline hook...
[ 2.526651] systemd[1]: Starting system-systemd\x2dfsck.slice.
[ 2.528034] systemd[1]: Created slice system-systemd\x2dfsck.slice.
[ 2.528792] systemd[1]: Starting Load Kernel Modules...
[ 2.530325] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[ 2.531235] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 2.531278] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 2.531297] sd 4:0:0:0: Attached scsi generic sg2 type 0
[ 2.531316] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 2.534490] systemd[1]: Starting Journal Service...
[ 2.536022] systemd[1]: Starting Slices.
[ 2.537140] systemd-journald[154]: Failed to set file attributes: Inappropriate ioctl for device
[ 2.538285] systemd[1]: Reached target Slices.
[ 2.538946] systemd[1]: Starting Setup Virtual Console...
[ 2.540465] systemd[1]: Starting Swap.
[ 2.542612] systemd[1]: Reached target Swap.
[ 2.543709] systemd[1]: Starting Local File Systems.
[ 2.545112] systemd[1]: Reached target Local File Systems.
[ 2.546961] systemd[1]: Started Load Kernel Modules.
[ 2.548995] systemd[1]: Started Create list of required static device nodes for the current kernel.
[ 2.550572] systemd[1]: Started Setup Virtual Console.
[ 2.552908] systemd[1]: Starting Create static device nodes in /dev...
[ 2.554608] systemd[1]: Starting Apply Kernel Variables...
[ 2.556948] systemd[1]: Started Create static device nodes in /dev.
[ 2.558383] systemd[1]: Started Apply Kernel Variables.
[ 2.559749] systemd[1]: Started dracut cmdline hook.
[ 2.561210] systemd[1]: Started Journal Service.
[ 2.585519] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input7
[ 2.586779] ACPI: Power Button [PWRB]
[ 2.587983] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input8
[ 2.588018] ACPI: Power Button [PWRF]
[ 2.592267] [drm] Initialized drm 1.1.0 20060810
[ 2.594196] wmi: Mapper loaded
[ 2.640007] clocksource: Switched to clocksource tsc
[ 2.868141] random: nonblocking pool is initialized
[ 2.937645] EXT4-fs (sdc3): mounted filesystem with ordered data mode. Opts: data=ordered
[ 3.082729] systemd-journald[154]: Received SIGTERM from PID 1 (systemd).
[ 4.944246] device-mapper: uevent: version 1.0.3
[ 4.944309] device-mapper: ioctl: 4.31.0-ioctl (2015-3-12) initialised: dm-devel@xxxxxxxxxx
[ 5.540586] systemd-readahead[399]: Bumped block_nr parameter of 8:32 to 20480. This is a temporary hack and should be removed one day.
[ 6.851888] ACPI Warning: SystemIO range 0x000000000000F000-0x000000000000F01F conflicts with OpRegion 0x000000000000F000-0x000000000000F00F (\_SB_.PCI0.SBUS.SMBI) (20150515/utaddress-254)
[ 6.852656] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
[ 6.931752] thermal LNXTHERM:00: registered as thermal_zone0
[ 6.932515] ACPI: Thermal Zone [TZ00] (28 C)
[ 6.933477] thermal LNXTHERM:01: registered as thermal_zone1
[ 6.934206] ACPI: Thermal Zone [TZ01] (30 C)
[ 7.151702] iTCO_vendor_support: vendor-support=0
[ 7.152822] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[ 7.153543] iTCO_wdt: Found a Lynx Point TCO device (Version=2, TCOBASE=0x1860)
[ 7.154304] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[ 7.561298] EXT4-fs (sdc3): re-mounted. Opts: acl,user_xattr
[ 7.828308] EXT4-fs (sdd1): mounted filesystem with writeback data mode. Opts: data=writeback,acl,user_xattr
[ 8.105380] AVX2 version of gcm_enc/dec engaged.
[ 8.106197] AES CTR mode by8 optimization enabled
[ 8.371083] Adding 2104316k swap on /dev/sdc2. Priority:-1 extents:1 across:2104316k FS
[ 8.372290] snd_hda_intel 0000:00:1b.0: enabling device (0000 -> 0002)
[ 8.372369] snd_hda_intel 0000:01:00.1: enabling device (0000 -> 0002)
[ 8.372392] snd_hda_intel 0000:01:00.1: Disabling MSI
[ 8.372395] snd_hda_intel 0000:01:00.1: Handle VGA-switcheroo audio client
[ 8.504246] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC887-VD: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[ 8.504247] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 8.504248] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[ 8.504248] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 8.504249] snd_hda_codec_realtek hdaudioC0D0: inputs:
[ 8.504250] snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x19
[ 8.504250] snd_hda_codec_realtek hdaudioC0D0: Rear Mic=0x18
[ 8.504251] snd_hda_codec_realtek hdaudioC0D0: Line=0x1a
[ 8.515534] input: HDA Intel PCH Front Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[ 8.515563] input: HDA Intel PCH Rear Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[ 8.515587] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 8.515612] input: HDA Intel PCH Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
[ 8.515636] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
[ 9.053824] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input14
[ 9.055403] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input15
[ 9.056681] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input16
[ 9.057436] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input17
[ 9.115047] FAT-fs (sdc1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 10.043873] systemd-journald[403]: Received request to flush runtime journal from PID 1
[ 10.340931] systemd[1]: Unit apparmor.service entered failed state.
[ 11.072589] systemd[1]: set_kthread_prio.service: control process exited, code=killed status=11
[ 11.096816] systemd[1]: Unit set_kthread_prio.service entered failed state.
[ 11.133099] systemd[1]: Unit kdump.service entered failed state.
[ 11.180579] systemd[1]: Unit SuSEfirewall2_init.service entered failed state.
[ 11.344489] systemd[1]: display-manager.service: control process exited, code=killed status=11
[ 11.368512] systemd[1]: Unit display-manager.service entered failed state.
[ 12.062671] NET: Registered protocol family 17
[ 12.517609] systemd[1]: Unit wickedd-dhcp4.service entered failed state.
[ 12.760012] systemd[1]: wickedd-dhcp4.service holdoff time over, scheduling restart.
[ 13.008371] systemd[1]: Unit wickedd.service entered failed state.
[ 13.259794] systemd[1]: wickedd.service holdoff time over, scheduling restart.
[ 14.324202] systemd[1]: Unit wickedd-nanny.service entered failed state.
[ 14.396138] systemd[1]: Unit wickedd-auto4.service entered failed state.
[ 14.504142] systemd[1]: Unit wickedd-dhcp6.service entered failed state.
[ 25.551726] sysrq: SysRq : Power Off
[ 25.567346] sd 5:0:0:0: [sdd] Synchronizing SCSI cache
[ 25.568069] sd 5:0:0:0: [sdd] Stopping disk
[ 25.979200] sd 4:0:0:0: [sdc] Synchronizing SCSI cache
[ 26.044734] sd 4:0:0:0: [sdc] Stopping disk
[ 26.523508] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[ 26.524253] sd 1:0:0:0: [sdb] Stopping disk
[ 26.928454] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 26.933453] sd 0:0:0:0: [sda] Stopping disk

[ 9.422011] invalid opcode: 0000 [#1] SMP
[ 9.422806] Modules linked in: kvm_intel(+) kvm snd_hda_codec_hdmi(+) crct10dif_pclmul snd_hda_codec_realtek snd_hda_codec_generic crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_hda_core snd_pcm aesni_intel aes_x86_64 lrw gf128mul snd_timer iTCO_wdt tpm_infineon snd glue_helper mei_me iTCO_vendor_support mei i2c_i801 tpm_tis lpc_ich joydev ablk_helper thermal battery processor mfd_core fan tpm soundcore cryptd intel_smartconnect serio_raw dm_mod efivarfs nouveau mxm_wmi wmi i2c_algo_bit drm_kms_helper ttm drm video thermal_sys button sg autofs4
[ 9.425350] CPU: 1 PID: 480 Comm: systemd-udevd Tainted: G W 4.1.0-master #268
[ 9.426174] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 9.427000] task: ffff88040a658000 ti: ffff88040a660000 task.ti: ffff88040a660000
[ 9.427828] RIP: 0010:[<ffffffffa041c811>] [<ffffffffa041c811>] kvm_arch_init+0xf1/0x1c0 [kvm]
[ 9.428679] RSP: 0018:ffff88040a663c68 EFLAGS: 00010246
[ 9.429517] RAX: 0000000077fafbff RBX: 0000000000000000 RCX: 0000000000000000
[ 9.430358] RDX: 0000000080000001 RSI: ffffffffa0455c60 RDI: ffffffffa0455c40
[ 9.431198] RBP: ffff88040a663c88 R08: 0000000000000080 R09: 0000000000000000
[ 9.432037] R10: 00000000000006c8 R11: 000000000001cf69 R12: ffffffffa0920160
[ 9.432879] R13: 0000000000000000 R14: 0000000000004480 R15: ffffffffa09207e0
[ 9.433715] FS: 00007f24f12c7880(0000) GS:ffff88041ec40000(0000) knlGS:0000000000000000
[ 9.434557] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9.435397] CR2: 00007f24f12d2000 CR3: 000000040a64f000 CR4: 00000000001007e0
[ 9.436242] Stack:
[ 9.437059] ffffffffa09207e0 ffffffff81a12040 ffff8800dbc06e00 0000000000000040
[ 9.437876] ffff88040a663cd8 ffffffffa0407004 ffff88040a663d18 ffffffff00000018
[ 9.438684] ffff88040a663cf8 ffffffff81a12040 ffff8800dbc06e00 0000000000000000
[ 9.439489] Call Trace:
[ 9.440281] [<ffffffffa0407004>] kvm_init+0x24/0x2b0 [kvm]
[ 9.441074] [<ffffffffa0341c5a>] ? vmx_check_processor_compat+0x60/0x60 [kvm_intel]
[ 9.441874] [<ffffffffa0341c7b>] vmx_init+0x21/0x3a6 [kvm_intel]
[ 9.442661] [<ffffffff810002fc>] do_one_initcall+0xbc/0x1f0
[ 9.443436] [<ffffffff8116ecf5>] ? kmem_cache_alloc_trace+0x35/0x130
[ 9.444210] [<ffffffff815c2a74>] do_init_module+0x61/0x1cc
[ 9.444979] [<ffffffff810c6693>] load_module+0x1cc3/0x2590
[ 9.445744] [<ffffffff810c2590>] ? store_uevent+0x40/0x40
[ 9.446503] [<ffffffff810c7136>] SyS_finit_module+0x86/0xb0
[ 9.447262] [<ffffffff815cd29b>] system_call_fastpath+0x16/0x6e
[ 9.448018] Code: 25 25 2e 04 00 e8 00 38 00 00 e8 cb 4f ff ff 48 c7 c7 40 5c 45 a0 e8 af 81 cf e0 48 8b 05 dc bd 6b e1 a9 00 00 00 04 74 15 31 c9 <0f> 01 d0 48 c1 e2 20 89 c0 48 01 d0 48 89 05 44 00 04 00 e8 27
[ 9.449791] RIP [<ffffffffa041c811>] kvm_arch_init+0xf1/0x1c0 [kvm]
[ 9.450595] RSP <ffff88040a663c68>
[ 9.451403] ---[ end trace cb88537fdc8fa207 ]---
[ 9.452740] Kernel panic - not syncing: Fatal exception
[ 9.453576] Kernel Offset: disabled
[ 9.454381] Rebooting in 60 seconds..


[ 0.000000] KERNEL supported cpus:
[ 0.000000] Intel GenuineIntel
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/fpu/xsave.c:646 fpu__init_system_xstate+0x1da/0x440()
[ 0.000000] x86/fpu: XSTATE_CPUID missing!
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.1.0-master #270
[ 0.000000] ffffffff817f0b3b ffffffff81a03dc8 ffffffff815c5088 000000000000002e
[ 0.000000] ffffffff81a03e18 ffffffff81a03e08 ffffffff8105432a 0000000000000000
[ 0.000000] 0000000000000008 ffffffff81603f80 0000000001000000 00000000cbf3b260
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff815c5088>] dump_stack+0x45/0x57
[ 0.000000] [<ffffffff8105432a>] warn_slowpath_common+0x8a/0xc0
[ 0.000000] [<ffffffff810543a6>] warn_slowpath_fmt+0x46/0x50
[ 0.000000] [<ffffffff8100f7aa>] fpu__init_system_xstate+0x1da/0x440
[ 0.000000] [<ffffffff8100d680>] fpu__init_system+0x90/0x1c0
[ 0.000000] [<ffffffff81afffed>] early_cpu_init+0xe6/0x144
[ 0.000000] [<ffffffff81afc293>] setup_arch+0x95/0xc4b
[ 0.000000] [<ffffffff8109b8af>] ? vprintk_default+0x1f/0x30
[ 0.000000] [<ffffffff81af9c4b>] start_kernel+0x90/0x41f
[ 0.000000] [<ffffffff81b49b2f>] ? memblock_reserve+0x4c/0x51
[ 0.000000] [<ffffffff81af95ad>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81af969a>] x86_64_start_kernel+0xeb/0xef
[ 0.000000] ---[ end trace cb88537fdc8fa200 ]---
[ 0.000000] x86/fpu: Using 'lazy' FPU context switches.

....
[ 2.454087] console [netcon0] enabled
[ 2.454902] netconsole: network logging started
[ 2.455758] rtc_cmos 00:02: setting system clock to 2015-06-27 04:58:45 UTC (1435381125)
[ 2.456816] Freeing unused kernel memory: 1164K (ffffffff81ae2000 - ffffffff81c05000)
[ 2.457625] Write protecting the kernel read-only data: 10240k
[ 2.458682] Freeing unused kernel memory: 180K (ffff8800015d3000 - ffff880001600000)
[ 2.459728] Freeing unused kernel memory: 1208K (ffff8800018d2000 - ffff880001a00000)
[ 2.460638] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 2.460638]
[ 2.462272] CPU: 6 PID: 1 Comm: init Tainted: G W 4.1.0-master #277
[ 2.463086] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[ 2.463906] ffff880409a78000 ffff88040ca1bc88 ffffffff815c50d2 00000000000000ea
[ 2.464735] ffffffff817fe7e8 ffff88040ca1bd08 ffffffff815c0a7e ffff88040ca1bce8
[ 2.465553] ffff880400000010 ffff88040ca1bd18 ffff88040ca1bcb8 ffff88040ca10000
[ 2.466361] Call Trace:
[ 2.467152] [<ffffffff815c50d2>] dump_stack+0x45/0x57
[ 2.467935] [<ffffffff815c0a7e>] panic+0xbb/0x1df
[ 2.468701] [<ffffffff81055f86>] do_exit+0xac6/0xad0
[ 2.469462] [<ffffffff81056c3f>] do_group_exit+0x3f/0xa0
[ 2.470215] [<ffffffff810615f7>] get_signal+0x1d7/0x5d0
[ 2.470953] [<ffffffff8105f435>] ? complete_signal+0x105/0x210
[ 2.471679] [<ffffffff81002da0>] do_signal+0x20/0x120
[ 2.472396] [<ffffffff8105f998>] ? __send_signal.constprop.25+0x138/0x3e0
[ 2.473115] [<ffffffff81060434>] ? force_sig_info+0xd4/0xf0
[ 2.473830] [<ffffffff81002f08>] do_notify_resume+0x68/0x80
[ 2.474544] [<ffffffff815cc5f3>] retint_signal+0x3d/0x7a
[ 2.475285] Kernel Offset: disabled
[ 2.476011] Rebooting in 60 seconds..


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