From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Sathya Prakash M R <sathyap@ti.com>,
"tony@atomide.com" <tony@atomide.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"rob.herring@calxeda.com" <rob.herring@calxeda.com>,
Pawel Moll <Pawel.Moll@arm.com>,
"paul@pwsan.com" <paul@pwsan.com>
Subject: Re: [PATCH v2 4/4] ARM: DTS: AM43x: Add DSS node
Date: Fri, 14 Mar 2014 12:19:16 +0200 [thread overview]
Message-ID: <5322D7A4.4090602@ti.com> (raw)
In-Reply-To: <20140314101405.GI25870@e106331-lin.cambridge.arm.com>
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On 14/03/14 12:14, Mark Rutland wrote:
> I can't see anything obviously wrong in platform_device_del. Do you have
> a backtrace?
Yes, below.
I can see at least drivers/usb/dwc3/dwc3-exynos.c doing the exact same thing
I do, so maybe I've got something wrong with the omapdss driver.
Tomi
[ 62.987335] Unable to handle kernel NULL pointer dereference at virtual address 00000018
[ 62.995910] pgd = eb6b8000
[ 62.998779] [00000018] *pgd=aa127831, *pte=00000000, *ppte=00000000
[ 63.005462] Internal error: Oops: 17 [#1] SMP ARM
[ 63.005462] Modules linked in: omapdss(-) [last unloaded: encoder_tfp410]
[ 63.011779] CPU: 1 PID: 1021 Comm: rmmod Not tainted 3.14.0-rc2-00057-gacd3401a1fea-dirty #69
[ 63.025909] task: eb17a040 ti: ea14e000 task.ti: ea14e000
[ 63.032287] PC is at release_resource+0x1c/0x84
[ 63.032287] LR is at _raw_write_lock+0x50/0x58
[ 63.041748] pc : [<c004adc8>] lr : [<c05bbd5c>] psr: 60000113
[ 63.041748] sp : ea14fde0 ip : ea14fdb8 fp : ea14fdf4
[ 63.053833] r10: 00000000 r9 : ea14e000 r8 : c000f704
[ 63.053833] r7 : 00000081 r6 : bf0004fc r5 : eb714400 r4 : eb6a9600
[ 63.061798] r3 : 00000000 r2 : 00000001 r1 : 00000011 r0 : c08cec3c
[ 63.071746] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 63.071746] Control: 10c53c7d Table: ab6b804a DAC: 00000015
[ 63.081787] Process rmmod (pid: 1021, stack limit = 0xea14e248)
[ 63.091735] Stack: (0xea14fde0 to 0xea150000)
[ 63.093109] fde0: 00000001 eb714400 ea14fe0c ea14fdf8 c03953dc c004adb8 eb714400 00000000
[ 63.101806] fe00: ea14fe24 ea14fe10 c0395808 c0395374 eb17a040 eb714400 ea14fe3c ea14fe28
[ 63.114715] fe20: bf000530 c0395800 eb714410 00000000 ea14fe64 ea14fe40 c038fa5c bf000508
[ 63.121795] fe40: eb214b80 eb6a9d30 ea14fe7c eb204410 bf032d98 eb204444 ea14fe7c ea14fe68
[ 63.123352] fe60: bf022574 c038fa2c bf02254c eb204410 ea14fe8c ea14fe80 c0395080 bf022558
[ 63.140136] fe80: ea14fea4 ea14fe90 c0393494 c039506c eb204410 bf032d98 ea14fec4 ea14fea8
[ 63.149200] fea0: c0393efc c0393428 00000000 bf032d98 bf034438 bf0342b8 ea14fedc ea14fec8
[ 63.154327] fec0: c0393244 c0393e4c eb6fa300 bf032d98 ea14fef4 ea14fee0 c0394570 c03931ec
[ 63.166442] fee0: bf022800 00000005 ea14ff04 ea14fef8 c03951d0 c039454c ea14ff14 ea14ff08
[ 63.175048] ff00: bf0010e8 c03951c8 ea14ff34 ea14ff18 bf022534 bf0010e0 bf0224f4 00000000
[ 63.183685] ff20: bf0342d0 00000880 ea14ffa4 ea14ff38 c00b7f50 bf022500 c000f564 00000000
[ 63.183685] ff40: bf0342d0 00000880 ea14ff3c 70616d6f 00737364 00088ec9 ea14ff84 ea14ff68
[ 63.200927] ff60: c008fff0 c008fdd8 0001cec8 70616d6f 00737364 00000081 ea14ff94 ea14ff88
[ 63.209533] ff80: c00900dc 0008ff08 00000000 0001cec8 70616d6f 00737364 00000000 ea14ffa8
[ 63.218170] ffa0: c000f540 c00b7e0c 0001cec8 70616d6f bea28b10 00000880 bea28b10 00000880
[ 63.226776] ffc0: 0001cec8 70616d6f 00737364 00000081 000acc00 00000042 00088ec9 00000000
[ 63.234619] ffe0: bea28b08 bea28af8 0001cda4 b6ed3390 60000110 bea28b10 00000000 00000000
[ 63.234619] Backtrace:
[ 63.246612] [<c004adac>] (release_resource) from [<c03953dc>] (platform_device_del+0x74/0xa4)
[ 63.246612] r5:eb714400 r4:00000001
[ 63.246612] [<c0395368>] (platform_device_del) from [<c0395808>] (platform_device_unregister+0x14/0x20)
[ 63.267150] r5:00000000 r4:eb714400
[ 63.273223] [<c03957f4>] (platform_device_unregister) from [<bf000530>] (dss_uninit_submodule_dev+0x34/0x40 [omapdss])
[ 63.281799] r4:eb714400 r3:eb17a040
[ 63.281799] [<bf0004fc>] (dss_uninit_submodule_dev [omapdss]) from [<c038fa5c>] (device_for_each_child+0x3c/0x7c)
[ 63.291839] r4:00000000 r3:eb714410
[ 63.303070] [<c038fa20>] (device_for_each_child) from [<bf022574>] (omap_dsshw_remove+0x28/0x70 [omapdss])
[ 63.312255] r6:eb204444 r5:bf032d98 r4:eb204410
[ 63.318237] [<bf02254c>] (omap_dsshw_remove [omapdss]) from [<c0395080>] (platform_drv_remove+0x20/0x24)
[ 63.321807] r4:eb204410 r3:bf02254c
[ 63.331848] [<c0395060>] (platform_drv_remove) from [<c0393494>] (__device_release_driver+0x78/0xd0)
[ 63.341644] [<c039341c>] (__device_release_driver) from [<c0393efc>] (driver_detach+0xbc/0xc0)
[ 63.350708] r5:bf032d98 r4:eb204410
[ 63.352874] [<c0393e40>] (driver_detach) from [<c0393244>] (bus_remove_driver+0x64/0xcc)
[ 63.352874] r6:bf0342b8 r5:bf034438 r4:bf032d98 r3:00000000
[ 63.369018] [<c03931e0>] (bus_remove_driver) from [<c0394570>] (driver_unregister+0x30/0x50)
[ 63.372894] r4:bf032d98 r3:eb6fa300
[ 63.381713] [<c0394540>] (driver_unregister) from [<c03951d0>] (platform_driver_unregister+0x14/0x18)
[ 63.391418] r4:00000005 r3:bf022800
[ 63.391845] [<c03951bc>] (platform_driver_unregister) from [<bf0010e8>] (dss_uninit_platform_driver+0x14/0x1c [omapdss])
[ 63.401794] [<bf0010d4>] (dss_uninit_platform_driver [omapdss]) from [<bf022534>] (omap_dss_exit+0x40/0x58 [omapdss])
[ 63.406951] [<bf0224f4>] (omap_dss_exit [omapdss]) from [<c00b7f50>] (SyS_delete_module+0x150/0x1e0)
[ 63.421844] r6:00000880 r5:bf0342d0 r4:00000000 r3:bf0224f4
[ 63.431793] [<c00b7e00>] (SyS_delete_module) from [<c000f540>] (ret_fast_syscall+0x0/0x48)
[ 63.431793] r6:00737364 r5:70616d6f r4:0001cec8
[ 63.447448] Code: e1a04000 e59f0068 eb15c3d1 e5943010 (e5932018)
[ 63.453918] ---[ end trace 9bdaba0cecbfc6c4 ]---
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next prev parent reply other threads:[~2014-03-14 10:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-13 8:58 [PATCH v2 0/4] Add Display support for AM43xx Sathya Prakash M R
2014-03-13 8:58 ` [PATCH v2 1/4] OMAPDSS: Add DSS features " Sathya Prakash M R
2014-03-13 8:58 ` [PATCH v2 2/4] ARM: AM43xx: fix dpll init in bypass mode Sathya Prakash M R
2014-03-13 10:24 ` Tomi Valkeinen
2014-03-13 10:32 ` Sathya Prakash
2014-03-13 8:58 ` [PATCH v2 3/4] ARM: OMAP2+: AM43xx DSS Hwmod Sathya Prakash M R
2014-03-13 8:58 ` [PATCH v2 4/4] ARM: DTS: AM43x: Add DSS node Sathya Prakash M R
2014-03-13 10:21 ` Tomi Valkeinen
2014-03-13 10:30 ` Sathya Prakash
2014-03-13 17:46 ` Mark Rutland
2014-03-13 18:22 ` Tomi Valkeinen
2014-03-14 9:10 ` Mark Rutland
2014-03-14 9:42 ` Tomi Valkeinen
2014-03-14 10:14 ` Mark Rutland
2014-03-14 10:19 ` Tomi Valkeinen [this message]
2014-03-14 11:07 ` Tomi Valkeinen
2014-03-14 14:07 ` Mark Rutland
2014-03-14 16:04 ` Felipe Balbi
2014-03-14 16:34 ` Tomi Valkeinen
2014-03-14 18:00 ` Mark Rutland
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