Re: DSS2 crash with shutdown -h now

2010-10-20 Thread Steve Sakoman
On Tue, Oct 19, 2010 at 9:42 PM, Taneja, Archit arc...@ti.com wrote:
 Hi,

 linux-omap-ow...@vger.kernel.org wrote:
 I'm using a 2.6.35 kernel, and the generic panel driver.

 I see this crash about 25% of the time, so I suspect a race condition.

 Is anyone else encountering this?

 Steve


 Unmounting local filesystems...
 Unhandled fault: external abort on non-linefetch (0x1028) at
 0xfa050040 Internal error: : 1028 [#1] last sysfs file:
 /sys/devices/virtual/vc/vcs12/uevent
 Modules linked in: ipv6 uvcvideo videodev v4l1_compat ads7846
 CPU: 0    Not tainted  (2.6.35 #1)
 PC is at dss_select_dispc_clk_source+0x20/0x40
 LR is at omapdss_dpi_display_disable+0x20/0x50
 pc : [c01f74d4]    lr : [c01ffc80]    psr: 6013
 sp : ded59e38  ip : 0090  fp : 0001
 r10: 0001  r9 : ded58000  r8 : c0032084
 r7 : ded59e50  r6 :   r5 : c01fcc28  r4 : c057da00
 r3 :   r2 : fa05  r1 : c05d062c  r0 : 0002
 Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
 Control: 10c5387d  Table: 9ed84019  DAC: 0015 Process
 halt (pid: 503, stack limit = 0xded582f0)
 Stack: (0xded59e38 to 0xded5a000)
 9e20:
 c057da00 c020a430
 9e40:  c01fcc48 ded59e50 c022f424 dfc3fc78 dfccc170
 dfe02400 c057d4cc
 9e60: c057d4c0 c05d4fac  c0230ba4 c0575de0 c022c6f8 28121969 cdef0123
 9e80: fee1dead c0065d58 28121969 c0065ed4 0014 dfc17dd8 0001 dfc299c0
 9ea0:  ded59eb0 c0062ee4 c00546f0 000a4800 a013  ded59f08
 9ec0: 0001 0014 ded58000 0001 0001 c0063068  ded59f08
 9ee0: dfc299c0 dfc18500 ded59f08 0014 ded58000 c0063cb8 0001 
 9f00: 0006 c0063d2c 0014 0164  01f7  dfc299f8
 9f20: 0164 dfc299f0 c057f598   fffd  c006e810
 9f40: ded59f6c  dfc299c0 c0052fbc dfc299c0 dff16e00
 dec41080 dec92540
 9f60: ded59fac ded59f70 c03e841c c0052f90 ff9c c0031f58
 dec927a8 ded58000
 9f80:    0006 0025   0006
 9fa0: 0058 c0031f00   fee1dead 28121969 4321fedc 
 9fc0:   0006 0058 0001 0001 0001 0001
 9fe0: 00011e50 bef36cb0 925c 400e23f8 2010 fee1dead
   [c01f74d4]
 (dss_select_dispc_clk_source+0x20/0x40) from [c01ffc80]
 (omapdss_dpi_display_disable+0x20/0x50)
 [c01ffc80] (omapdss_dpi_display_disable+0x20/0x50) from [c020a430]
 (generic_panel_disable+0xc/0x18)
 [c020a430] (generic_panel_disable+0xc/0x18) from [c01fcc48]
 (dss_disable_device+0x20/0x2c)
 [c01fcc48] (dss_disable_device+0x20/0x2c) from [c022f424]
 (bus_for_each_dev+0x4c/0x8c) [c022f424] (bus_for_each_dev+0x4c/0x8c) from
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24)
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24) from [c022c6f8]
 (device_shutdown+0x70/0x94) [c022c6f8] (device_shutdown+0x70/0x94) from
 [c0065d58] (kernel_halt+0x10/0x2c) [c0065d58] (kernel_halt+0x10/0x2c)
 from [c0065ed4] (sys_reboot+0x118/0x1dc) [c0065ed4]
 (sys_reboot+0x118/0x1dc) from [c0031f00]
 (ret_fast_syscall+0x0/0x30)
 Code: e5833000 eafd e59f101c e5912000 (e5923040)
 OMAPFB: pan_display(0)
 OMAPFB: setcmap
 OMAPFB: setcmap
 OMAPFB: setcmap

 Are you running a fb app while shutting down?

My test method is to use a relatively minimal rootfs.  It does launch
a console session on the fb using a USB KB on musb, which sits at the
login prompt throughout the test.  I do not login via this console
session.

I login via serial port, wait till uptime reports 10 minutes, then
issue 'shutdown -h now'

Steve
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Re: DSS2 crash with shutdown -h now

2010-10-20 Thread Robert Nelson
On Wed, Oct 20, 2010 at 7:44 AM, Steve Sakoman sako...@gmail.com wrote:
 On Tue, Oct 19, 2010 at 9:42 PM, Taneja, Archit arc...@ti.com wrote:
 Hi,

 linux-omap-ow...@vger.kernel.org wrote:
 I'm using a 2.6.35 kernel, and the generic panel driver.

 I see this crash about 25% of the time, so I suspect a race condition.

 Is anyone else encountering this?

 Steve


 Unmounting local filesystems...
 Unhandled fault: external abort on non-linefetch (0x1028) at
 0xfa050040 Internal error: : 1028 [#1] last sysfs file:
 /sys/devices/virtual/vc/vcs12/uevent
 Modules linked in: ipv6 uvcvideo videodev v4l1_compat ads7846
 CPU: 0    Not tainted  (2.6.35 #1)
 PC is at dss_select_dispc_clk_source+0x20/0x40
 LR is at omapdss_dpi_display_disable+0x20/0x50
 pc : [c01f74d4]    lr : [c01ffc80]    psr: 6013
 sp : ded59e38  ip : 0090  fp : 0001
 r10: 0001  r9 : ded58000  r8 : c0032084
 r7 : ded59e50  r6 :   r5 : c01fcc28  r4 : c057da00
 r3 :   r2 : fa05  r1 : c05d062c  r0 : 0002
 Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
 Control: 10c5387d  Table: 9ed84019  DAC: 0015 Process
 halt (pid: 503, stack limit = 0xded582f0)
 Stack: (0xded59e38 to 0xded5a000)
 9e20:
 c057da00 c020a430
 9e40:  c01fcc48 ded59e50 c022f424 dfc3fc78 dfccc170
 dfe02400 c057d4cc
 9e60: c057d4c0 c05d4fac  c0230ba4 c0575de0 c022c6f8 28121969 
 cdef0123
 9e80: fee1dead c0065d58 28121969 c0065ed4 0014 dfc17dd8 0001 
 dfc299c0
 9ea0:  ded59eb0 c0062ee4 c00546f0 000a4800 a013  
 ded59f08
 9ec0: 0001 0014 ded58000 0001 0001 c0063068  
 ded59f08
 9ee0: dfc299c0 dfc18500 ded59f08 0014 ded58000 c0063cb8 0001 
 
 9f00: 0006 c0063d2c 0014 0164  01f7  
 dfc299f8
 9f20: 0164 dfc299f0 c057f598   fffd  
 c006e810
 9f40: ded59f6c  dfc299c0 c0052fbc dfc299c0 dff16e00
 dec41080 dec92540
 9f60: ded59fac ded59f70 c03e841c c0052f90 ff9c c0031f58
 dec927a8 ded58000
 9f80:    0006 0025   
 0006
 9fa0: 0058 c0031f00   fee1dead 28121969 4321fedc 
 
 9fc0:   0006 0058 0001 0001 0001 
 0001
 9fe0: 00011e50 bef36cb0 925c 400e23f8 2010 fee1dead
   [c01f74d4]
 (dss_select_dispc_clk_source+0x20/0x40) from [c01ffc80]
 (omapdss_dpi_display_disable+0x20/0x50)
 [c01ffc80] (omapdss_dpi_display_disable+0x20/0x50) from [c020a430]
 (generic_panel_disable+0xc/0x18)
 [c020a430] (generic_panel_disable+0xc/0x18) from [c01fcc48]
 (dss_disable_device+0x20/0x2c)
 [c01fcc48] (dss_disable_device+0x20/0x2c) from [c022f424]
 (bus_for_each_dev+0x4c/0x8c) [c022f424] (bus_for_each_dev+0x4c/0x8c) from
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24)
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24) from [c022c6f8]
 (device_shutdown+0x70/0x94) [c022c6f8] (device_shutdown+0x70/0x94) from
 [c0065d58] (kernel_halt+0x10/0x2c) [c0065d58] (kernel_halt+0x10/0x2c)
 from [c0065ed4] (sys_reboot+0x118/0x1dc) [c0065ed4]
 (sys_reboot+0x118/0x1dc) from [c0031f00]
 (ret_fast_syscall+0x0/0x30)
 Code: e5833000 eafd e59f101c e5912000 (e5923040)
 OMAPFB: pan_display(0)
 OMAPFB: setcmap
 OMAPFB: setcmap
 OMAPFB: setcmap

 Are you running a fb app while shutting down?

 My test method is to use a relatively minimal rootfs.  It does launch
 a console session on the fb using a USB KB on musb, which sits at the
 login prompt throughout the test.  I do not login via this console
 session.

 I login via serial port, wait till uptime reports 10 minutes, then
 issue 'shutdown -h now'

Hi Steve
10 minutes?

Sounds very much like: http://www.spinics.net/lists/linux-omap/msg34582.html

*there might be a newer patch, that's just the one i had marked on my list..

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/
--
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RE: DSS2 crash with shutdown -h now

2010-10-20 Thread Janorkar, Mayuresh


 -Original Message-
 From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-
 ow...@vger.kernel.org] On Behalf Of Robert Nelson
 Sent: Wednesday, October 20, 2010 6:33 PM
 To: Steve Sakoman
 Cc: linux-omap@vger.kernel.org
 Subject: Re: DSS2 crash with shutdown -h now
 
 On Wed, Oct 20, 2010 at 7:44 AM, Steve Sakoman sako...@gmail.com wrote:
  On Tue, Oct 19, 2010 at 9:42 PM, Taneja, Archit arc...@ti.com wrote:
  Hi,
 
  linux-omap-ow...@vger.kernel.org wrote:
  I'm using a 2.6.35 kernel, and the generic panel driver.
 
  I see this crash about 25% of the time, so I suspect a race condition.
 
  Is anyone else encountering this?
 
  Steve
 
 
  Unmounting local filesystems...
  Unhandled fault: external abort on non-linefetch (0x1028) at
  0xfa050040 Internal error: : 1028 [#1] last sysfs file:
  /sys/devices/virtual/vc/vcs12/uevent
  Modules linked in: ipv6 uvcvideo videodev v4l1_compat ads7846
  CPU: 0    Not tainted  (2.6.35 #1)
  PC is at dss_select_dispc_clk_source+0x20/0x40
  LR is at omapdss_dpi_display_disable+0x20/0x50
  pc : [c01f74d4]    lr : [c01ffc80]    psr: 6013
  sp : ded59e38  ip : 0090  fp : 0001
  r10: 0001  r9 : ded58000  r8 : c0032084
  r7 : ded59e50  r6 :   r5 : c01fcc28  r4 : c057da00
  r3 :   r2 : fa05  r1 : c05d062c  r0 : 0002
  Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
  Control: 10c5387d  Table: 9ed84019  DAC: 0015 Process
  halt (pid: 503, stack limit = 0xded582f0)
  Stack: (0xded59e38 to 0xded5a000)
  9e20:
  c057da00 c020a430
  9e40:  c01fcc48 ded59e50 c022f424 dfc3fc78 dfccc170
  dfe02400 c057d4cc
  9e60: c057d4c0 c05d4fac  c0230ba4 c0575de0 c022c6f8 28121969
 cdef0123
  9e80: fee1dead c0065d58 28121969 c0065ed4 0014 dfc17dd8 0001
 dfc299c0
  9ea0:  ded59eb0 c0062ee4 c00546f0 000a4800 a013 
 ded59f08
  9ec0: 0001 0014 ded58000 0001 0001 c0063068 
 ded59f08
  9ee0: dfc299c0 dfc18500 ded59f08 0014 ded58000 c0063cb8 0001
 
  9f00: 0006 c0063d2c 0014 0164  01f7 
 dfc299f8
  9f20: 0164 dfc299f0 c057f598   fffd 
 c006e810
  9f40: ded59f6c  dfc299c0 c0052fbc dfc299c0 dff16e00
  dec41080 dec92540
  9f60: ded59fac ded59f70 c03e841c c0052f90 ff9c c0031f58
  dec927a8 ded58000
  9f80:    0006 0025  
 0006
  9fa0: 0058 c0031f00   fee1dead 28121969 4321fedc
 
  9fc0:   0006 0058 0001 0001 0001
 0001
  9fe0: 00011e50 bef36cb0 925c 400e23f8 2010 fee1dead
    [c01f74d4]
  (dss_select_dispc_clk_source+0x20/0x40) from [c01ffc80]
  (omapdss_dpi_display_disable+0x20/0x50)
  [c01ffc80] (omapdss_dpi_display_disable+0x20/0x50) from [c020a430]
  (generic_panel_disable+0xc/0x18)
  [c020a430] (generic_panel_disable+0xc/0x18) from [c01fcc48]
  (dss_disable_device+0x20/0x2c)
  [c01fcc48] (dss_disable_device+0x20/0x2c) from [c022f424]
  (bus_for_each_dev+0x4c/0x8c) [c022f424] (bus_for_each_dev+0x4c/0x8c)
 from
  [c0230ba4] (platform_drv_shutdown+0x1c/0x24)
  [c0230ba4] (platform_drv_shutdown+0x1c/0x24) from [c022c6f8]
  (device_shutdown+0x70/0x94) [c022c6f8] (device_shutdown+0x70/0x94)
 from
  [c0065d58] (kernel_halt+0x10/0x2c) [c0065d58]
 (kernel_halt+0x10/0x2c)
  from [c0065ed4] (sys_reboot+0x118/0x1dc) [c0065ed4]
  (sys_reboot+0x118/0x1dc) from [c0031f00]
  (ret_fast_syscall+0x0/0x30)
  Code: e5833000 eafd e59f101c e5912000 (e5923040)
  OMAPFB: pan_display(0)
  OMAPFB: setcmap
  OMAPFB: setcmap
  OMAPFB: setcmap
 
  Are you running a fb app while shutting down?
 
  My test method is to use a relatively minimal rootfs.  It does launch
  a console session on the fb using a USB KB on musb, which sits at the
  login prompt throughout the test.  I do not login via this console
  session.
 
  I login via serial port, wait till uptime reports 10 minutes, then
  issue 'shutdown -h now'
 
 Hi Steve
 10 minutes?
 
 Sounds very much like: http://www.spinics.net/lists/linux-
 omap/msg34582.html
 
Yes, I also think that this patch would solve the issue.

Steve,

If you wish to disable display auto blanking, you can add this in your 
bootargs: consoleblank=0

With that the crash would not be seen.

http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=blob;f=Documentation/kernel-parameters.txt

-Thanks,
Mayuresh

 *there might be a newer patch, that's just the one i had marked on my
 list..
 
 Regards,
 
 --
 Robert Nelson
 http://www.rcn-ee.com/
 --
 To unsubscribe from this list: send the line unsubscribe linux-omap in
 the body of a message to majord...@vger.kernel.org
 More majordomo info at  http://vger.kernel.org/majordomo-info.html
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Re: DSS2 crash with shutdown -h now

2010-10-20 Thread Steve Sakoman
On Wed, Oct 20, 2010 at 6:02 AM, Robert Nelson robertcnel...@gmail.com wrote:
 On Wed, Oct 20, 2010 at 7:44 AM, Steve Sakoman sako...@gmail.com wrote:
 On Tue, Oct 19, 2010 at 9:42 PM, Taneja, Archit arc...@ti.com wrote:
 Hi,

 linux-omap-ow...@vger.kernel.org wrote:
 I'm using a 2.6.35 kernel, and the generic panel driver.

 I see this crash about 25% of the time, so I suspect a race condition.

 Is anyone else encountering this?

 Steve


 Unmounting local filesystems...
 Unhandled fault: external abort on non-linefetch (0x1028) at
 0xfa050040 Internal error: : 1028 [#1] last sysfs file:
 /sys/devices/virtual/vc/vcs12/uevent
 Modules linked in: ipv6 uvcvideo videodev v4l1_compat ads7846
 CPU: 0    Not tainted  (2.6.35 #1)
 PC is at dss_select_dispc_clk_source+0x20/0x40
 LR is at omapdss_dpi_display_disable+0x20/0x50
 pc : [c01f74d4]    lr : [c01ffc80]    psr: 6013
 sp : ded59e38  ip : 0090  fp : 0001
 r10: 0001  r9 : ded58000  r8 : c0032084
 r7 : ded59e50  r6 :   r5 : c01fcc28  r4 : c057da00
 r3 :   r2 : fa05  r1 : c05d062c  r0 : 0002
 Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
 Control: 10c5387d  Table: 9ed84019  DAC: 0015 Process
 halt (pid: 503, stack limit = 0xded582f0)
 Stack: (0xded59e38 to 0xded5a000)
 9e20:
 c057da00 c020a430
 9e40:  c01fcc48 ded59e50 c022f424 dfc3fc78 dfccc170
 dfe02400 c057d4cc
 9e60: c057d4c0 c05d4fac  c0230ba4 c0575de0 c022c6f8 28121969 
 cdef0123
 9e80: fee1dead c0065d58 28121969 c0065ed4 0014 dfc17dd8 0001 
 dfc299c0
 9ea0:  ded59eb0 c0062ee4 c00546f0 000a4800 a013  
 ded59f08
 9ec0: 0001 0014 ded58000 0001 0001 c0063068  
 ded59f08
 9ee0: dfc299c0 dfc18500 ded59f08 0014 ded58000 c0063cb8 0001 
 
 9f00: 0006 c0063d2c 0014 0164  01f7  
 dfc299f8
 9f20: 0164 dfc299f0 c057f598   fffd  
 c006e810
 9f40: ded59f6c  dfc299c0 c0052fbc dfc299c0 dff16e00
 dec41080 dec92540
 9f60: ded59fac ded59f70 c03e841c c0052f90 ff9c c0031f58
 dec927a8 ded58000
 9f80:    0006 0025   
 0006
 9fa0: 0058 c0031f00   fee1dead 28121969 4321fedc 
 
 9fc0:   0006 0058 0001 0001 0001 
 0001
 9fe0: 00011e50 bef36cb0 925c 400e23f8 2010 fee1dead
   [c01f74d4]
 (dss_select_dispc_clk_source+0x20/0x40) from [c01ffc80]
 (omapdss_dpi_display_disable+0x20/0x50)
 [c01ffc80] (omapdss_dpi_display_disable+0x20/0x50) from [c020a430]
 (generic_panel_disable+0xc/0x18)
 [c020a430] (generic_panel_disable+0xc/0x18) from [c01fcc48]
 (dss_disable_device+0x20/0x2c)
 [c01fcc48] (dss_disable_device+0x20/0x2c) from [c022f424]
 (bus_for_each_dev+0x4c/0x8c) [c022f424] (bus_for_each_dev+0x4c/0x8c) from
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24)
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24) from [c022c6f8]
 (device_shutdown+0x70/0x94) [c022c6f8] (device_shutdown+0x70/0x94) from
 [c0065d58] (kernel_halt+0x10/0x2c) [c0065d58] (kernel_halt+0x10/0x2c)
 from [c0065ed4] (sys_reboot+0x118/0x1dc) [c0065ed4]
 (sys_reboot+0x118/0x1dc) from [c0031f00]
 (ret_fast_syscall+0x0/0x30)
 Code: e5833000 eafd e59f101c e5912000 (e5923040)
 OMAPFB: pan_display(0)
 OMAPFB: setcmap
 OMAPFB: setcmap
 OMAPFB: setcmap

 Are you running a fb app while shutting down?

 My test method is to use a relatively minimal rootfs.  It does launch
 a console session on the fb using a USB KB on musb, which sits at the
 login prompt throughout the test.  I do not login via this console
 session.

 I login via serial port, wait till uptime reports 10 minutes, then
 issue 'shutdown -h now'

 Hi Steve
 10 minutes?

 Sounds very much like: http://www.spinics.net/lists/linux-omap/msg34582.html

 *there might be a newer patch, that's just the one i had marked on my list..

I used a variant of the v2 patch in that thread and I can confirm that
it does fix the issue.

Thanks!

Steve
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RE: DSS2 crash with shutdown -h now

2010-10-19 Thread Taneja, Archit
Hi,

linux-omap-ow...@vger.kernel.org wrote:
 I'm using a 2.6.35 kernel, and the generic panel driver.
 
 I see this crash about 25% of the time, so I suspect a race condition.
 
 Is anyone else encountering this?
 
 Steve
 
 
 Unmounting local filesystems...
 Unhandled fault: external abort on non-linefetch (0x1028) at
 0xfa050040 Internal error: : 1028 [#1] last sysfs file:
 /sys/devices/virtual/vc/vcs12/uevent
 Modules linked in: ipv6 uvcvideo videodev v4l1_compat ads7846
 CPU: 0Not tainted  (2.6.35 #1)
 PC is at dss_select_dispc_clk_source+0x20/0x40
 LR is at omapdss_dpi_display_disable+0x20/0x50
 pc : [c01f74d4]lr : [c01ffc80]psr: 6013
 sp : ded59e38  ip : 0090  fp : 0001
 r10: 0001  r9 : ded58000  r8 : c0032084
 r7 : ded59e50  r6 :   r5 : c01fcc28  r4 : c057da00
 r3 :   r2 : fa05  r1 : c05d062c  r0 : 0002
 Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
 Control: 10c5387d  Table: 9ed84019  DAC: 0015 Process
 halt (pid: 503, stack limit = 0xded582f0)
 Stack: (0xded59e38 to 0xded5a000)
 9e20:
 c057da00 c020a430
 9e40:  c01fcc48 ded59e50 c022f424 dfc3fc78 dfccc170
 dfe02400 c057d4cc
 9e60: c057d4c0 c05d4fac  c0230ba4 c0575de0 c022c6f8 28121969 cdef0123
 9e80: fee1dead c0065d58 28121969 c0065ed4 0014 dfc17dd8 0001 dfc299c0
 9ea0:  ded59eb0 c0062ee4 c00546f0 000a4800 a013  ded59f08
 9ec0: 0001 0014 ded58000 0001 0001 c0063068  ded59f08
 9ee0: dfc299c0 dfc18500 ded59f08 0014 ded58000 c0063cb8 0001 
 9f00: 0006 c0063d2c 0014 0164  01f7  dfc299f8
 9f20: 0164 dfc299f0 c057f598   fffd  c006e810
 9f40: ded59f6c  dfc299c0 c0052fbc dfc299c0 dff16e00
 dec41080 dec92540
 9f60: ded59fac ded59f70 c03e841c c0052f90 ff9c c0031f58
 dec927a8 ded58000
 9f80:    0006 0025   0006
 9fa0: 0058 c0031f00   fee1dead 28121969 4321fedc 
 9fc0:   0006 0058 0001 0001 0001 0001
 9fe0: 00011e50 bef36cb0 925c 400e23f8 2010 fee1dead
   [c01f74d4]
 (dss_select_dispc_clk_source+0x20/0x40) from [c01ffc80]
 (omapdss_dpi_display_disable+0x20/0x50)
 [c01ffc80] (omapdss_dpi_display_disable+0x20/0x50) from [c020a430]
 (generic_panel_disable+0xc/0x18)
 [c020a430] (generic_panel_disable+0xc/0x18) from [c01fcc48]
 (dss_disable_device+0x20/0x2c)
 [c01fcc48] (dss_disable_device+0x20/0x2c) from [c022f424]
 (bus_for_each_dev+0x4c/0x8c) [c022f424] (bus_for_each_dev+0x4c/0x8c) from
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24)
 [c0230ba4] (platform_drv_shutdown+0x1c/0x24) from [c022c6f8]
 (device_shutdown+0x70/0x94) [c022c6f8] (device_shutdown+0x70/0x94) from
 [c0065d58] (kernel_halt+0x10/0x2c) [c0065d58] (kernel_halt+0x10/0x2c)
 from [c0065ed4] (sys_reboot+0x118/0x1dc) [c0065ed4]
 (sys_reboot+0x118/0x1dc) from [c0031f00]
 (ret_fast_syscall+0x0/0x30)
 Code: e5833000 eafd e59f101c e5912000 (e5923040)
 OMAPFB: pan_display(0)
 OMAPFB: setcmap
 OMAPFB: setcmap
 OMAPFB: setcmap

Are you running a fb app while shutting down?

 ---[ end trace 953aeb15ef1f69db ]---
 Segmentation fault--
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