On Wed, Oct 20, 2010 at 7:44 AM, Steve Sakoman <sakoman@xxxxxxxxx> wrote: > On Tue, Oct 19, 2010 at 9:42 PM, Taneja, Archit <archit@xxxxxx> wrote: >> 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? > > 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/ -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
