Processed: tagging 841850

2016-10-25 Thread Debian Bug Tracking System 
Processing commands for cont...@bugs.debian.org:

> tags 841850 + upstream fixed-upstream
Bug #841850 [src:linux] linux-image-4.7.0-1-686_4.7.8-1_i386.deb does not boot 
on Thinkpad T41
Bug #841690 [src:linux] freezes with blank screen after printing two lines.
Added tag(s) upstream and fixed-upstream.
Added tag(s) fixed-upstream and upstream.
> thanks
Stopping processing here.

Please contact me if you need assistance.
-- 
841690: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841690
841850: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841850
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

Bug#841850: linux-image-4.7.0-1-686_4.7.8-1_i386.deb does not boot on Thinkpad T41

2016-10-25 Thread Salvatore Bonaccorso 
Hi Ben, hi Petra,

On Mon, Oct 24, 2016 at 02:35:07PM +0100, Ben Hutchings wrote:
> On Mon, 2016-10-24 at 11:49 +0200, Petra Ruebe-Pugliese wrote:
> [...]
> >  Okay.  So I've sacrificed the less important of the two
> >  notebooks again and repeated the "apt-get dist-upgrade"
> >  so that the current kernel got installed again.
> > 
> >  In doing so, two messages appeared that looked approximately
> >  like this:
> > 
> >   /etc/kernel-img.conf:4: ignoring unknown parameter relative_links
> >   /etc/kernel-img.conf:6: ignoring unknown parameter do_bootfloppy
> >
> >  The second of these lines reminds me of the fact that with
> >  previous kernel versions the boot process used to stop in the
> >  same place for quite some (disquieting!) time and then continued
> >  with some message about a read error on /dev/fd
> 
> I don't know what 'do_bootfloppy' used to do, but I think it's unrelated to 
> loading of the floppy driver.  It sounds like you have quite an old 
> installation that might also have some obsolete scripts left in the boot 
> process.  Also, note that the /dev/fd directory is unrelated to floppy drives.
> 
> >  This was the case on all my computers, although these two
> >  thinkpads no longer have a floppy drive.
> > 
> >  Now to the photo.  I've tried to make one.
> >  With these new boot parameters there is a lot of output rushing
> >  through which I could not catch.  So I'm sending only what was
> >  to be seen when it stopped.  Maybe that's enough to put you on
> >  the right track.  If not, please tell me what else I can do
> >  to bring some light into the matter.
> 
> OK, this is the same crash that someone else reported and I think I
> know which change triggered it (though not why).

There seem to be an upstream fix now for this issue:

https://git.kernel.org/linus/ff8560512b8d4b7ca3ef4fd69166634ac30b2525

Can you by chance confirm that this works as well for you?

Regards,
Salvatore

Bug#841850: linux-image-4.7.0-1-686_4.7.8-1_i386.deb does not boot on Thinkpad T41

2016-10-25 Thread Petra Ruebe-Pugliese 
On Monday, 24 October 2016, at 14:35 Ben Hutchings (b...@decadent.org.uk) wrote:
[...]
> 
> OK, this is the same crash that someone else reported and I think I
> know which change triggered it (though not why).
> 
> Does the attached patch fix the crash?  (Instructions for rebuilding
> the package are at
> .)
> 
> Ben.

 The third attempt to generate that patched kernel finally
 succeeded (doing the compilation overnight, with a large
 external harddisk as additional storage medium).

 I installed the resulting
   35M Oct 26 03:44 linux-image-4.7.0-1-686-unsigned_4.7.8-1a~test_i386.deb
 on one of the affected notebooks, and it booted flawlessly  :-)

 Petra

Processed: bug 839617 is forwarded to https://bugs.freedesktop.org/show_bug.cgi?id=97602

2016-10-25 Thread Debian Bug Tracking System 
Processing commands for cont...@bugs.debian.org:

> forwarded 839617 https://bugs.freedesktop.org/show_bug.cgi?id=97602
Bug #839617 [src:linux] linux 4.6 - 4.7.5: intel hd graphics 5500 crash after 
power save
Set Bug forwarded-to-address to 
'https://bugs.freedesktop.org/show_bug.cgi?id=97602'.
> thanks
Stopping processing here.

Please contact me if you need assistance.
-- 
839617: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839617
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

Bug#839617: linux 4.6 - 4.7.5: intel hd graphics 5500 crash after power save; workaround

2016-10-25 Thread Daniel 
Package: src:linux
Version: 4.7.8-1~bpo8+1
Followup-For: Bug #839617

Dear Maintainer,

meanwhile I have found the following workaround:
booting with
i915.enable_psr=0
avoids the crashes.

Perhaps panel self refresh (psr) could be deactivated for intel broadwell until
upstream fixes this issue?

(see also https://bugs.freedesktop.org/show_bug.cgi?id=97602)

Cheers,
Daniel



-- Package-specific info:
** Version:
Linux version 4.7.0-0.bpo.1-amd64 (debian-kernel@lists.debian.org) (gcc version 
4.9.2 (Debian 4.9.2-10) ) #1 SMP Debian 4.7.8-1~bpo8+1 (2016-10-19)

** Command line:
BOOT_IMAGE=/vmlinuz-4.7.0-0.bpo.1-amd64 
root=UUID=606e51f3-fe5c-4fe2-b595-6157070b1c9a ro apparmor=1 security=apparmor 
i915.enable_psr=0 quiet

** Tainted: PUOE (12353)
 * Proprietary module has been loaded.
 * Userspace-defined naughtiness.
 * Out-of-tree module has been loaded.
 * Unsigned module has been loaded.

** Kernel log:
[   10.054258] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[   10.072807] snd_hda_codec_realtek hdaudioC1D0: autoconfig for ALC3263: 
line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[   10.072813] snd_hda_codec_realtek hdaudioC1D0:speaker_outs=0 
(0x0/0x0/0x0/0x0/0x0)
[   10.072816] snd_hda_codec_realtek hdaudioC1D0:hp_outs=1 
(0x21/0x0/0x0/0x0/0x0)
[   10.072818] snd_hda_codec_realtek hdaudioC1D0:mono: mono_out=0x0
[   10.072820] snd_hda_codec_realtek hdaudioC1D0:inputs:
[   10.072823] snd_hda_codec_realtek hdaudioC1D0:  Headset Mic=0x18
[   10.072825] snd_hda_codec_realtek hdaudioC1D0:  Headphone Mic=0x1a
[   10.072827] snd_hda_codec_realtek hdaudioC1D0:  Internal Mic=0x12
[   10.078320] [drm] Memory usable by graphics device = 4096M
[   10.078324] [drm] Replacing VGA console driver
[   10.078970] Console: switching to colour dummy device 80x25
[   10.079348] [drm] ACPI BIOS requests an excessive sleep of 25000 ms, using 
1500 ms instead
[   10.085509] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   10.085513] [drm] Driver supports precise vblank timestamp query.
[   10.087857] vgaarb: device changed decodes: 
PCI::00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[   10.089477] input: HDA Digital PCBeep as 
/devices/pci:00/:00:1b.0/sound/card1/input8
[   10.089687] input: HDA Intel PCH Headphone Mic as 
/devices/pci:00/:00:1b.0/sound/card1/input9
[   10.105063] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[   10.109507] wl: module license 'MIXED/Proprietary' taints kernel.
[   10.109510] Disabling lock debugging due to kernel taint
[   10.115867] input: Video Bus as 
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input10
[   10.142971] dcdbas dcdbas: Dell Systems Management Base Driver (version 
5.6.0-3.2)
[   10.147887] wlan0: Broadcom BCM43b1 802.11 Hybrid Wireless Controller 
6.30.223.271 (r587334)
[   10.153559] Adding 8298492k swap on /dev/mapper/sda2_crypt.  Priority:-1 
extents:1 across:8298492k SSFS
[   10.154021] input: DLL0665:01 06CB:76AD Touchpad as 
/devices/pci:00/INT3433:00/i2c-1/i2c-DLL0665:01/0018:06CB:76AD.0001/input/input11
[   10.154174] hid-multitouch 0018:06CB:76AD.0001: input,hidraw0: I2C HID v1.00 
Mouse [DLL0665:01 06CB:76AD] on i2c-DLL0665:01
[   10.161524] intel_rapl: Found RAPL domain package
[   10.161528] intel_rapl: Found RAPL domain core
[   10.161531] intel_rapl: Found RAPL domain uncore
[   10.161533] intel_rapl: Found RAPL domain dram
[   10.161537] intel_rapl: RAPL package 0 domain package locked by BIOS
[   10.161541] intel_rapl: RAPL package 0 domain dram locked by BIOS
[   10.165744] iTCO_vendor_support: vendor-support=0
[   10.11] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[   10.166710] iTCO_wdt: Found a Wildcat Point_LP TCO device (Version=2, 
TCOBASE=0x1860)
[   10.166925] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[   10.214325] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: 
(null)
[   10.283060] fbcon: inteldrmfb (fb0) is primary device
[   10.410352] snd_hda_intel :00:03.0: bound :00:02.0 (ops 
i915_audio_component_bind_ops [i915])
[   10.410357] [drm] Initialized i915 1.6.0 20160425 for :00:02.0 on minor 0
[   11.034037] Bluetooth: Core ver 2.21
[   11.034051] NET: Registered protocol family 31
[   11.034052] Bluetooth: HCI device and connection manager initialized
[   11.034054] Bluetooth: HCI socket layer initialized
[   11.034056] Bluetooth: L2CAP socket layer initialized
[   11.034060] Bluetooth: SCO socket layer initialized
[   11.037299] usbcore: registered new interface driver btusb
[   11.042181] Bluetooth: hci0: BCM: chip id 63
[   11.042931] input: HDA Intel HDMI HDMI/DP,pcm=3 as 
/devices/pci:00/:00:03.0/sound/card0/input13
[   11.043800] input: HDA Intel HDMI HDMI/DP,pcm=7 as 
/devices/pci:00/:00:03.0/sound/card0/input14
[   11.043874] input: HDA Intel HDMI HDMI/DP,pcm=8 as 
/devices/pci:00/:00:03.0/sound/card0/input15
[   11.057371] media: Linux media interface:

Bug#841368: gcc-6 6.2.0-7 breaks kernel build if stack protection is enabled

2016-10-25 Thread Konstantin Demin 
>> But does this generate the same output as without -enable-default-pie?
>> Some parts of the kernel do use -fpic or -fPIC. Which directive prevails?

If you call gcc with "-O3 -O0 -O1", only "-O1" option is make sence.
See attachments from recent build log (roughly speaking, Linux 4.8.4,
"make V=1" with gcc 6.2.0-9, but actually it's heavily customized
Debian src:linux with 3rd pty patches and custom configs).

>> I'm currently looking for correct way to do this trick.
Patch is available and (at least) works for me on amd64 and i386, ref msg #51

-- 
SY,
Konstantin Demin
gcc-6
-Wp,-MD,arch/x86/entry/vdso/.vdso-image-64.o.d
-nostdinc
-isystem
/usr/lib/gcc/x86_64-linux-gnu/6/include
-I/<>/arch/x86/include
-I./arch/x86/include/generated/uapi
-I./arch/x86/include/generated
-I/<>/include
-I./include
-I/<>/arch/x86/include/uapi
-I/<>/include/uapi
-I./include/generated/uapi
-include /<>/include/linux/kconfig.h
-I/<>/arch/x86/entry/vdso
-Iarch/x86/entry/vdso
-D__KERNEL__
-Wall
-Wundef
-Wstrict-prototypes
-Wno-trigraphs
-fno-strict-aliasing
-fno-common
-Werror-implicit-function-declaration
-Wno-format-security
-std=gnu89
-mno-sse
-mno-mmx
-mno-sse2
-mno-3dnow
-mno-avx
-m64
-falign-jumps=1
-falign-loops=1
-mno-80387
-mno-fp-ret-in-387
-mpreferred-stack-boundary=3
-mskip-rax-setup
-mtune=generic
-mno-red-zone
-mcmodel=kernel
-DCONFIG_X86_X32_ABI
-DCONFIG_AS_CFI=1
-DCONFIG_AS_CFI_SIGNAL_FRAME=1
-DCONFIG_AS_CFI_SECTIONS=1
-DCONFIG_AS_FXSAVEQ=1
-DCONFIG_AS_SSSE3=1
-DCONFIG_AS_CRC32=1
-DCONFIG_AS_AVX=1
-DCONFIG_AS_AVX2=1
-DCONFIG_AS_SHA1_NI=1
-DCONFIG_AS_SHA256_NI=1
-pipe
-Wno-sign-compare
-fno-asynchronous-unwind-tables
-O2
-fplugin=./scripts/gcc-plugins/cyc_complexity_plugin.so
-fomit-frame-pointer
-DCC_HAVE_ASM_GOTO
-fno-PIC
-fno-PIE
-DKBUILD_BASENAME='"vdso_image_64"'
-DKBUILD_MODNAME='"vdso_image_64"'
-c
-o arch/x86/entry/vdso/.tmp_vdso-image-64.o
arch/x86/entry/vdso/vdso-image-64.cgcc-6
-Wp,-MD,arch/x86/entry/vdso/.vclock_gettime.o.d
-nostdinc
-isystem
/usr/lib/gcc/x86_64-linux-gnu/6/include
-I/<>/arch/x86/include
-I./arch/x86/include/generated/uapi
-I./arch/x86/include/generated
-I/<>/include
-I./include
-I/<>/arch/x86/include/uapi
-I/<>/include/uapi
-I./include/generated/uapi
-include /<>/include/linux/kconfig.h
-I/<>/arch/x86/entry/vdso
-Iarch/x86/entry/vdso
-D__KERNEL__
-Wall
-Wundef
-Wstrict-prototypes
-Wno-trigraphs
-fno-strict-aliasing
-fno-common
-Werror-implicit-function-declaration
-Wno-format-security
-std=gnu89
-mno-sse
-mno-mmx
-mno-sse2
-mno-3dnow
-mno-avx
-m64
-falign-jumps=1
-falign-loops=1
-mno-80387
-mno-fp-ret-in-387
-mpreferred-stack-boundary=3
-mskip-rax-setup
-mtune=generic
-mno-red-zone
-mcmodel=kernel
-DCONFIG_X86_X32_ABI
-DCONFIG_AS_CFI=1
-DCONFIG_AS_CFI_SIGNAL_FRAME=1
-DCONFIG_AS_CFI_SECTIONS=1
-DCONFIG_AS_FXSAVEQ=1
-DCONFIG_AS_SSSE3=1
-DCONFIG_AS_CRC32=1
-DCONFIG_AS_AVX=1
-DCONFIG_AS_AVX2=1
-DCONFIG_AS_SHA1_NI=1
-DCONFIG_AS_SHA256_NI=1
-pipe
-Wno-sign-compare
-fno-asynchronous-unwind-tables
-O2
-fomit-frame-pointer
-DCC_HAVE_ASM_GOTO
-fno-PIC
-fno-PIE
-mcmodel=small
-fPIC
-O2
-fasynchronous-unwind-tables
-m64
-fno-stack-protector
-fno-omit-frame-pointer
-foptimize-sibling-calls
-DDISABLE_BRANCH_PROFILING
-DBUILD_VDSO
-DKBUILD_BASENAME='"vclock_gettime"'
-DKBUILD_MODNAME='"vclock_gettime"'
-c
-o arch/x86/entry/vdso/.tmp_vclock_gettime.o
/<>/arch/x86/entry/vdso/vclock_gettime.c

Bug#841368: gcc-6 6.2.0-7 breaks kernel build if stack protection is enabled

2016-10-25 Thread Jörg-Volker Peetz 
On Thu, 20 Oct 2016 18:13:05 -0500 "S. R. Wright"  wrote:
> I agree.  When the version changes from 6.2.0-6 to 6.2.0-7,  only bug 
> fixes should be included,  not changes in functionality.  In this case 
> setting enable-default-pie essentially broke backwards compatibility.  
> Kernel code that built in -6 failed to build in -7.  That, I agree,  
> should be considered a bug,  and the change should be rolled back.
> 
> -- sRw

I support this statement about changing functionality of such an important tool.
At least a recipe how to get the old behavior should be documented.

> 
> On 10/20/2016 05:49 PM, Ben Hutchings wrote:
> > On Fri, 2016-10-21 at 01:21 +0300, Konstantin Demin wrote:
> >> It's not a GCC bug but kind of new feature.
> > It's a bug when a compiler fails to compile valid code.
> >
> > Ben.
> >
> >> Take a look at this changelog entry:
> >>   gcc-6 (6.2.0-7) unstable; urgency=medium
> >>
> >> [ Matthias Klose ]
> >> * Configure with --enable-default-pie and pass -z now when pie is 
> >> enabled;
> >>   on amd64 arm64 armel armhf i386 mips mipsel mips64el ppc64el s390x.
> >>   Closes: #835148.
> >>
> >> Starting at gcc 6.2.0-7 we must provide "-fno-PIE -fno-PIC" in
> >> beginning of CFLAGS to build kernel successfully.
> >>

But does this generate the same output as without -enable-default-pie?
Some parts of the kernel do use -fpic or -fPIC. Which directive prevails?

> >> I'm currently looking for correct way to do this trick.

Regards,
jvp.

Processed: your mail

2016-10-25 Thread Debian Bug Tracking System 
Processing commands for cont...@bugs.debian.org:

> reassign 842027 linux-image-3.16.0-4-amd64 3.16.7-ckt20-1+deb8u4
Bug #842027 [linux-image-amd64] task updatedb.mlocat:1261 blocked for more than 
120 seconds.
Bug reassigned from package 'linux-image-amd64' to 'linux-image-3.16.0-4-amd64'.
No longer marked as found in versions linux-latest/63.
Ignoring request to alter fixed versions of bug #842027 to the same values 
previously set
Bug #842027 [linux-image-3.16.0-4-amd64] task updatedb.mlocat:1261 blocked for 
more than 120 seconds.
Marked as found in versions linux/3.16.7-ckt20-1+deb8u4.
>
End of message, stopping processing here.

Please contact me if you need assistance.
-- 
842027: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=842027
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

Bug#842027: task updatedb.mlocat:1261 blocked for more than 120 seconds.

2016-10-25 Thread Mathieu Malaterre 
Package: linux-image-amd64
Version: 3.16+63

Seems like updatedb does not work with current stable kernel:

[ 2039.660634] INFO: task updatedb.mlocat:1261 blocked for more than
120 seconds.
[ 2039.660640]   Not tainted 3.16.0-4-amd64 #1
[ 2039.660642] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 2039.660644] updatedb.mlocat D 8801b5a49178 0  1261   1260 0x
[ 2039.660649]  8801b5a48d20 0082 00012f00
8800b6017fd8
[ 2039.660653]  00012f00 8801b5a48d20 8801bfa137b0
8801bfdd9248
[ 2039.660656]  0002 811d72c0 8800b6017b80

[ 2039.660659] Call Trace:
[ 2039.660667]  [] ? generic_block_bmap+0x50/0x50
[ 2039.660672]  [] ? io_schedule+0x99/0x120
[ 2039.660675]  [] ? sleep_on_buffer+0xa/0x10
[ 2039.660678]  [] ? __wait_on_bit+0x5c/0x90
[ 2039.660681]  [] ? generic_block_bmap+0x50/0x50
[ 2039.660684]  [] ? out_of_line_wait_on_bit+0x77/0x90
[ 2039.660689]  [] ? autoremove_wake_function+0x30/0x30
[ 2039.660709]  [] ? ext4_find_entry+0x117/0x4d0 [ext4]
[ 2039.660718]  [] ? ext4_lookup+0x41/0x140 [ext4]
[ 2039.660723]  [] ? lookup_real+0x19/0x50
[ 2039.660727]  [] ? __lookup_hash+0x2f/0x40
[ 2039.660731]  [] ? lookup_slow+0x3e/0xa3
[ 2039.660734]  [] ? path_lookupat+0x73d/0x780
[ 2039.660738]  [] ? lookup_fast+0x3e/0x2b0
[ 2039.660741]  [] ? filename_lookup+0x26/0xc0
[ 2039.660744]  [] ? user_path_at_empty+0x54/0x90
[ 2039.660749]  [] ? from_kgid_munged+0xe/0x20
[ 2039.660753]  [] ? cp_new_stat+0x13a/0x160
[ 2039.660756]  [] ? vfs_fstatat+0x46/0x90
[ 2039.660760]  [] ? SYSC_newlstat+0x1d/0x40
[ 2039.660764]  [] ? SyS_poll+0x5d/0xf0
[ 2039.660768]  [] ? system_call_fast_compare_end+0x10/0x15
[ 2159.634427] INFO: task updatedb.mlocat:1261 blocked for more than
120 seconds.
[ 2159.634433]   Not tainted 3.16.0-4-amd64 #1
[ 2159.634434] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 2159.634436] updatedb.mlocat D 8801b5a49178 0  1261   1260 0x
[ 2159.634440]  8801b5a48d20 0082 00012f00
8800b6017fd8
[ 2159.63]  00012f00 8801b5a48d20 8801bfa137b0
8801bfdd9248
[ 2159.634446]  0002 811d72c0 8800b6017b80

[ 2159.634449] Call Trace:
[ 2159.634456]  [] ? generic_block_bmap+0x50/0x50
[ 2159.634461]  [] ? io_schedule+0x99/0x120
[ 2159.634463]  [] ? sleep_on_buffer+0xa/0x10
[ 2159.634466]  [] ? __wait_on_bit+0x5c/0x90
[ 2159.634469]  [] ? generic_block_bmap+0x50/0x50
[ 2159.634472]  [] ? out_of_line_wait_on_bit+0x77/0x90
[ 2159.634476]  [] ? autoremove_wake_function+0x30/0x30
[ 2159.634495]  [] ? ext4_find_entry+0x117/0x4d0 [ext4]
[ 2159.634503]  [] ? ext4_lookup+0x41/0x140 [ext4]
[ 2159.634507]  [] ? lookup_real+0x19/0x50
[ 2159.634511]  [] ? __lookup_hash+0x2f/0x40
[ 2159.634515]  [] ? lookup_slow+0x3e/0xa3
[ 2159.634518]  [] ? path_lookupat+0x73d/0x780
[ 2159.634521]  [] ? lookup_fast+0x3e/0x2b0
[ 2159.634524]  [] ? filename_lookup+0x26/0xc0
[ 2159.634527]  [] ? user_path_at_empty+0x54/0x90
[ 2159.634531]  [] ? from_kgid_munged+0xe/0x20
[ 2159.634534]  [] ? cp_new_stat+0x13a/0x160
[ 2159.634537]  [] ? vfs_fstatat+0x46/0x90
[ 2159.634540]  [] ? SYSC_newlstat+0x1d/0x40
[ 2159.634543]  [] ? SyS_poll+0x5d/0xf0
[ 2159.634547]  [] ? system_call_fast_compare_end+0x10/0x15
[ 2519.554786] INFO: task updatedb.mlocat:1261 blocked for more than
120 seconds.
[ 2519.554800]   Not tainted 3.16.0-4-amd64 #1
[ 2519.554802] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 2519.554804] updatedb.mlocat D 8801b5a49178 0  1261   1260 0x
[ 2519.554809]  8801b5a48d20 0082 00012f00
8800b6017fd8
[ 2519.554813]  00012f00 8801b5a48d20 8801bfa137b0
8801bfdd3170
[ 2519.554816]  0002 811d72c0 8800b6017b80

[ 2519.554819] Call Trace:
[ 2519.554827]  [] ? generic_block_bmap+0x50/0x50
[ 2519.554832]  [] ? io_schedule+0x99/0x120
[ 2519.554835]  [] ? sleep_on_buffer+0xa/0x10
[ 2519.554838]  [] ? __wait_on_bit+0x5c/0x90
[ 2519.554841]  [] ? generic_block_bmap+0x50/0x50
[ 2519.554844]  [] ? out_of_line_wait_on_bit+0x77/0x90
[ 2519.554849]  [] ? autoremove_wake_function+0x30/0x30
[ 2519.554869]  [] ? ext4_find_entry+0x117/0x4d0 [ext4]
[ 2519.554878]  [] ? ext4_lookup+0x41/0x140 [ext4]
[ 2519.554883]  [] ? lookup_real+0x19/0x50
[ 2519.554887]  [] ? __lookup_hash+0x2f/0x40
[ 2519.554892]  [] ? lookup_slow+0x3e/0xa3
[ 2519.554894]  [] ? path_lookupat+0x73d/0x780
[ 2519.554898]  [] ? lookup_fast+0x3e/0x2b0
[ 2519.554901]  [] ? filename_lookup+0x26/0xc0
[ 2519.554904]  [] ? user_path_at_empty+0x54/0x90
[ 2519.554909]  [] ? from_kgid_munged+0xe/0x20
[ 2519.554913]  [] ? cp_new_stat+0x13a/0x160
[ 2519.554916]  [] ? vfs_fstatat+0x46/0x90
[ 2519.554920]  [] ? SYSC_newlstat+0x1d/0x40
[ 2519.554923]  [] ? SyS_poll+0x5d/0xf0
[ 2519.554928]  [] ?