RE: DSS2 crash with shutdown -h now

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Hi,

linux-omap-owner@xxxxxxxxxxxxxxx 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: 60000013
> sp : ded59e38  ip : 00000090  fp : 00000001
> r10: 00000001  r9 : ded58000  r8 : c0032084
> r7 : ded59e50  r6 : 00000000  r5 : c01fcc28  r4 : c057da00
> r3 : 00000000  r2 : fa050000  r1 : c05d062c  r0 : 00000002
> Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
> Control: 10c5387d  Table: 9ed84019  DAC: 00000015 Process
> halt (pid: 503, stack limit = 0xded582f0)
> Stack: (0xded59e38 to 0xded5a000)
> 9e20:
> c057da00 c020a430
> 9e40: 00000000 c01fcc48 ded59e50 c022f424 dfc3fc78 dfccc170
> dfe02400 c057d4cc
> 9e60: c057d4c0 c05d4fac 00000000 c0230ba4 c0575de0 c022c6f8 28121969 cdef0123
> 9e80: fee1dead c0065d58 28121969 c0065ed4 00000014 dfc17dd8 00000001 dfc299c0
> 9ea0: 00000000 ded59eb0 c0062ee4 c00546f0 000a4800 a0000013 00000000 ded59f08
> 9ec0: 00000001 00000014 ded58000 00000001 00000001 c0063068 00000000 ded59f08
> 9ee0: dfc299c0 dfc18500 ded59f08 00000014 ded58000 c0063cb8 00000001 00000000
> 9f00: 00000006 c0063d2c 00000014 00000164 00000000 000001f7 00000000 dfc299f8
> 9f20: 00000164 dfc299f0 c057f598 00000000 00000000 fffffffd 00000000 c006e810
> 9f40: ded59f6c 00000000 dfc299c0 c0052fbc dfc299c0 dff16e00
> dec41080 dec92540
> 9f60: ded59fac ded59f70 c03e841c c0052f90 ffffff9c c0031f58
> dec927a8 ded58000
> 9f80: 00000000 00000000 00000000 00000006 00000025 00000000 00000000 00000006
> 9fa0: 00000058 c0031f00 00000000 00000000 fee1dead 28121969 4321fedc 00000000
> 9fc0: 00000000 00000000 00000006 00000058 00000001 00000001 00000001 00000001
> 9fe0: 00011e50 bef36cb0 0000925c 400e23f8 20000010 fee1dead
> 00000000 00000000 [<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 eafffffd 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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