Bug 86071
| Summary: | Oops: beaglebone black: drm_fbdev_cma_fini+0xc/0xa4 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Matwey V. Kornilov (matwey.kornilov) |
| Component: | Video(Other) | Assignee: | drivers_video-other |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | high | CC: | airlied, alan, nm, tomi.valkeinen |
| Priority: | P1 | ||
| Hardware: | ARM | ||
| OS: | Linux | ||
| Kernel Version: | 3.16.4 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | Kernel config | ||
So, the last tested version was 3.16.2, I suppose that the following commits may introduce it 9489fbcdee23e6e4cd6b835c43fb03f64e150d5e drm/tilcdc: fix double kfree aeb5d9de01102bde4443045397b4b72f52805d13 drm/tilcdc: fix release order on exit 29d674c44bb15f150f8999fc82af06eae776a14c drm/tilcdc: panel: fix leak when unloading the module c085fc88bf29aa3a5f4ff6712d6f19b2e3eebe74 drm/tilcdc: tfp410: fix dangling sysfs connector node 47b7b0c66ed3dc992b16254d02f2c5a318193392 drm/tilcdc: slave: fix dangling sysfs connector node d402b324568a68db0c1bcde2c1e7c2cca283d4a0 drm/tilcdc: panel: fix dangling sysfs connector node This could be a problem: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3a49012224ca9016658a831a327ff6a7fe5bb4f9 Come on, you initialize priv->fbdev only near the end of function tilcdc_load, but you call tilcdc_unload which call drm_fbdev_cma_fini making an assumption that the pointer is not NULL. The issue is that this stuff is in stable tree. How was this tested? This commit has fixed an issue for me. https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=b478e336b3e75505707a11e78ef8b964ef0a03af |
Created attachment 153281 [details] Kernel config Hi, I am running 3.16.4 on Beaglebone Black. On the boot I have the following oops: The kernel config is attached [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.16.4-1.g7a8842b-default (geeko@buildhost) (gcc version 4.8.3 20140627 [gcc-4_8-branch revision 212064] (SUSE Linux) ) #1 SMP Mon Oct 6 07:18:42 UTC 2014 (7a8842b) [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] Machine model: TI AM335x BeagleBone [ 0.000000] cma: CMA: reserved 16 MiB at 9e800000 [ 0.000000] Memory policy: Data cache writeback [ 0.000000] HighMem zone: 1048574 pages exceeds freesize 0 [ 0.000000] CPU: All CPU(s) started in SVC mode. [ 0.000000] AM335X ES2.0 (sgx neon ) [ 0.000000] PERCPU: Embedded 9 pages/cpu @dfac1000 s14464 r8192 d14208 u36864 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 129792 [ 0.000000] Kernel command line: plymouth.enable=0 console=ttyO0 showopts [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] allocated 1046528 bytes of page_cgroup [ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.000000] Memory: 431968K/523264K available (6903K kernel code, 1025K rwdata, 3268K rodata, 942K init, 856K bss, 91296K reserved, 0K highmem) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xffe00000 (2048 kB) [ 0.000000] vmalloc : 0xe0800000 - 0xff000000 ( 488 MB) [ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0xc0208000 - 0xc0bf7f60 (10176 kB) [ 0.000000] .init : 0xc0bf8000 - 0xc0ce3880 ( 943 kB) [ 0.000000] .data : 0xc0ce4000 - 0xc0de4580 (1026 kB) [ 0.000000] .bss : 0xc0de4580 - 0xc0eba658 ( 857 kB) [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=5 to nr_cpu_ids=1. [ 0.000000] Offload RCU callbacks from all CPUs [ 0.000000] Offload RCU callbacks from CPUs: 0. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts [ 0.000000] Total of 128 interrupts on 1 active controller [ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz [ 0.000012] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956969942ns [ 0.000032] OMAP clocksource: timer1 at 24000000 Hz [ 0.000308] Console: colour dummy device 80x30 [ 0.000344] Calibrating delay loop... 997.78 BogoMIPS (lpj=2494464) [ 0.054397] pid_max: default: 32768 minimum: 301 [ 0.054519] Security Framework initialized [ 0.054626] AppArmor: AppArmor initialized [ 0.054797] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.054809] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.055775] Initializing cgroup subsys memory [ 0.055878] Initializing cgroup subsys devices [ 0.055914] Initializing cgroup subsys freezer [ 0.055933] Initializing cgroup subsys net_cls [ 0.055964] Initializing cgroup subsys blkio [ 0.055988] Initializing cgroup subsys perf_event [ 0.056045] CPU: Testing write buffer coherency: ok [ 0.056100] ftrace: allocating 27563 entries in 54 pages [ 0.115442] CPU0: thread -1, cpu 0, socket -1, mpidr 0 [ 0.115823] Setting up static identity map for 0x80889c20 - 0x80889cb8 [ 0.123811] Brought up 1 CPUs [ 0.123831] SMP: Total of 1 processors activated. [ 0.123839] CPU: All CPU(s) started in SVC mode. [ 0.124711] devtmpfs: initialized [ 0.128356] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3 [ 0.137738] omap_hwmod: tptc0 using broken dt data from edma [ 0.137845] omap_hwmod: tptc1 using broken dt data from edma [ 0.137939] omap_hwmod: tptc2 using broken dt data from edma [ 0.142345] omap_hwmod: debugss: _wait_target_disable failed [ 0.201881] pinctrl core: initialized pinctrl subsystem [ 0.202478] regulator-dummy: no parameters [ 0.211782] NET: Registered protocol family 16 [ 0.213972] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.216170] cpuidle: using governor ladder [ 0.216194] cpuidle: using governor menu [ 0.222313] platform 49000000.edma: alias fck already exists [ 0.222337] platform 49000000.edma: alias fck already exists [ 0.222348] platform 49000000.edma: alias fck already exists [ 0.223099] OMAP GPIO hardware version 0.1 [ 0.230488] No ATAGs? [ 0.230519] hw-breakpoint: debug architecture 0x4 unsupported. [ 0.231337] EXYNOS: PMU not supported [ 0.231811] omap_init_mbox: hwmod doesn't have valid attrs [ 0.233449] Serial: AMBA PL011 UART driver [ 0.249653] edma-dma-engine edma-dma-engine.0: TI EDMA DMA engine driver [ 0.250384] vmmcsd_fixed: 3300 mV [ 0.251995] vgaarb: loaded [ 0.253780] SCSI subsystem initialized [ 0.254598] omap_i2c 44e0b000.i2c: could not find pctldev for node /pinmux@44e10800/pinmux_i2c0_pins, deferring probe [ 0.254625] platform 44e0b000.i2c: Driver omap_i2c requests probe deferral [ 0.255464] exynos_iommu_init: Failed to register exynos-iommu driver. [ 0.256540] NetLabel: Initializing [ 0.256553] NetLabel: domain hash size = 128 [ 0.256558] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.256615] NetLabel: unlabeled traffic allowed by default [ 0.256962] Switched to clocksource timer1 [ 0.302655] AppArmor: AppArmor Filesystem Enabled [ 0.315181] NET: Registered protocol family 2 [ 0.316035] TCP established hash table entries: 4096 (order: 2, 16384 bytes) [ 0.316086] TCP bind hash table entries: 4096 (order: 3, 32768 bytes) [ 0.316144] TCP: Hash tables configured (established 4096 bind 4096) [ 0.316221] TCP: reno registered [ 0.316234] UDP hash table entries: 256 (order: 1, 8192 bytes) [ 0.316253] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) [ 0.316462] NET: Registered protocol family 1 [ 0.317125] Unpacking initramfs... [ 4.517205] Freeing initrd memory: 56096K (c8081000 - cb749000) [ 4.517335] NetWinder Floating Point Emulator V0.97 (extended precision) [ 4.517623] hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver, 5 counters available [ 4.520128] futex hash table entries: 256 (order: 2, 16384 bytes) [ 4.520162] Initialise system trusted keyring [ 4.520295] audit: initializing netlink subsys (disabled) [ 4.520382] audit: type=2000 audit(4.475:1): initialized [ 4.522092] zbud: loaded [ 4.522518] VFS: Disk quotas dquot_6.5.2 [ 4.522582] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 4.523179] msgmni has been set to 985 [ 4.523368] Key type big_key registered [ 4.524422] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) [ 4.524632] io scheduler noop registered [ 4.524647] io scheduler deadline registered [ 4.524788] io scheduler cfq registered (default) [ 4.526070] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568 [ 4.530572] Serial: 8250/16550 driver, 32 ports, IRQ sharing disabled [ 4.540120] Serial: IMX driver [ 4.540512] msm_serial: driver initialized [ 4.540767] omap_uart 44e09000.serial: no wakeirq for uart0 [ 4.540923] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88, base_baud = 3000000) is a OMAP UART0 [ 5.277577] console [ttyO0] enabled [ 5.282387] serial: Freescale lpuart driver [ 5.287182] Non-volatile memory driver v1.3 [ 5.291650] [drm] Initialized drm 1.1.0 20060810 [ 5.299267] libphy: Fixed MDIO Bus: probed [ 5.304441] mousedev: PS/2 mouse device common for all mice [ 5.316155] ledtrig-cpu: registered to indicate activity on CPUs [ 5.322611] hidraw: raw HID events driver (C) Jiri Kosina [ 5.330353] TCP: cubic registered [ 5.333965] NET: Registered protocol family 10 [ 5.339820] omap_voltage_late_init: Voltage driver support not added [ 5.346574] sr_dev_init: No voltage domain specified for smartreflex0. Cannot initialize [ 5.355077] sr_dev_init: No voltage domain specified for smartreflex1. Cannot initialize [ 5.364271] ThumbEE CPU extension supported. [ 5.368830] SmartReflex Class3 initialized [ 5.373933] Loading compiled-in X.509 certificates [ 5.379091] registered taskstats version 1 [ 5.383612] AppArmor: AppArmor sha1 policy hashing enabled [ 5.390007] slave hdmi: could not get i2c [ 5.394310] platform hdmi: Driver slave requests probe deferral [ 5.400810] platform 4830e000.lcdc: Driver tilcdc requests probe deferral [ 5.419780] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz [ 5.437256] tilcdc 4830e000.lcdc: no encoders/connectors found [ 5.443432] tilcdc 4830e000.lcdc: failed to initialize mode setting [ 5.450030] Unable to handle kernel NULL pointer dereference at virtual address 0000001c [ 5.458531] pgd = c0204000 [ 5.461365] [0000001c] *pgd=00000000 [ 5.465138] Internal error: Oops: 17 [#1] SMP ARM [ 5.470068] Modules linked in: [ 5.473276] CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 3.16.4-1.g7a8842b-default #1 [ 5.481509] Workqueue: deferwq deferred_probe_work_func [ 5.486989] task: de099980 ti: de09a000 task.ti: de09a000 [ 5.492652] PC is at drm_fbdev_cma_fini+0xc/0xa4 [ 5.497498] LR is at tilcdc_unload+0x1c/0x12c [ 5.502065] pc : [<c061663c>] lr : [<c0636244>] psr: 60070013 [ 5.502065] sp : de09bdd8 ip : 00000000 fp : c0eaedcc [ 5.514100] r10: c0d9b268 r9 : de4a8700 r8 : de190200 [ 5.519575] r7 : de4a8700 r6 : de4a8700 r5 : fffffffa r4 : de6abc00 [ 5.526415] r3 : 00000394 r2 : c0d3e374 r1 : 20070093 r0 : 00000000 [ 5.533259] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 5.540920] Control: 10c5387d Table: 9e58c019 DAC: 00000015 [ 5.546942] Process kworker/u2:0 (pid: 6, stack limit = 0xde09a250) [ 5.553511] Stack: (0xde09bdd8 to 0xde09c000) [ 5.558077] bdc0: 00000394 de6abc00 [ 5.566652] bde0: fffffffa c0636244 de6abc00 fffffffa de4a8700 c0d9b3e4 de190200 c0636734 [ 5.575227] be00: 00000000 c0621c90 00000001 c0eaedac de678080 de6abc00 00000000 00000000 [ 5.583802] be20: 00000000 c0d9b27c 00000003 de09a030 00000000 c061f00c de6abc00 c0d9b2c0 [ 5.592378] be40: de190200 c062121c 00000000 c03f4818 de190210 de190218 de190210 c0d9b27c [ 5.600954] be60: c0ddfc48 c065b074 c065b054 de190210 c0eaeebc c06591d0 c0ddfc48 c065b180 [ 5.609529] be80: c0d9b27c 00000000 de190210 c0659428 c0ddfc48 de036900 00000000 c0657488 [ 5.618104] bea0: de0bff70 de678838 de190210 de190244 c0d9c890 c065900c de190210 de190210 [ 5.626681] bec0: c0d9c890 c06584fc de190210 c0d9c690 c0d9c6a8 c06589f0 c0658970 c0d9c6c4 [ 5.635257] bee0: de033d80 c0dd6d5c de035c00 c0280e78 00000000 de035c60 c0de8a00 00000000 [ 5.643832] bf00: de033d80 de033d80 de035c00 de035c14 de09a028 de09a000 de033d98 00000088 [ 5.652408] bf20: de035c00 c028181c c0dd6969 de035c00 de035c14 de035c60 de035d94 c0ce70c0 [ 5.660983] bf40: 00000000 de02e7c0 00000000 de033d80 c02817c4 00000000 00000000 00000000 [ 5.669559] bf60: 00000000 c0287498 55d15704 00000000 956dd865 de033d80 00000000 00000000 [ 5.678135] bf80: de09bf80 de09bf80 00000000 00000000 de09bf90 de09bf90 de09bfac de02e7c0 [ 5.686710] bfa0: c02873b8 00000000 00000000 c021aec8 00000000 00000000 00000000 00000000 [ 5.695285] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 5.703861] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 57564d7b 0d7fd176 [ 5.712453] [<c061663c>] (drm_fbdev_cma_fini) from [<c0636244>] (tilcdc_unload+0x1c/0x12c) [ 5.721126] [<c0636244>] (tilcdc_unload) from [<c0636734>] (tilcdc_load+0x3b8/0x528) [ 5.729254] [<c0636734>] (tilcdc_load) from [<c061f00c>] (drm_dev_register+0xb0/0x10c) [ 5.737562] [<c061f00c>] (drm_dev_register) from [<c062121c>] (drm_platform_init+0x58/0xfc) [ 5.746325] [<c062121c>] (drm_platform_init) from [<c065b074>] (platform_drv_probe+0x20/0x50) [ 5.755272] [<c065b074>] (platform_drv_probe) from [<c06591d0>] (driver_probe_device+0x154/0x3ac) [ 5.764580] [<c06591d0>] (driver_probe_device) from [<c0657488>] (bus_for_each_drv+0x60/0x94) [ 5.773523] [<c0657488>] (bus_for_each_drv) from [<c065900c>] (device_attach+0x7c/0x90) [ 5.781919] [<c065900c>] (device_attach) from [<c06584fc>] (bus_probe_device+0x8c/0xb0) [ 5.790315] [<c06584fc>] (bus_probe_device) from [<c06589f0>] (deferred_probe_work_func+0x80/0xcc) [ 5.799717] [<c06589f0>] (deferred_probe_work_func) from [<c0280e78>] (process_one_work+0x14c/0x3fc) [ 5.809299] [<c0280e78>] (process_one_work) from [<c028181c>] (worker_thread+0x58/0x5e4) [ 5.817792] [<c028181c>] (worker_thread) from [<c0287498>] (kthread+0xe0/0xf8) [ 5.825373] [<c0287498>] (kthread) from [<c021aec8>] (ret_from_fork+0x14/0x20) [ 5.832949] Code: c0d9a660 e92d4038 e52de004 e8bd4000 (e590501c) [ 5.839399] ---[ end trace 292c7d4db66d87af ]--- [ 5.844337] Unable to handle kernel paging request at virtual address ffffffec [ 5.851910] pgd = c0204000 [ 5.854743] [ffffffec] *pgd=9fef6821, *pte=00000000, *ppte=00000000 [ 5.861328] Internal error: Oops: 17 [#2] SMP ARM [ 5.866256] Modules linked in: [ 5.869461] CPU: 0 PID: 6 Comm: kworker/u2:0 Tainted: G D 3.16.4-1.g7a8842b-default #1 [ 5.878770] task: de099980 ti: de09a000 task.ti: de09a000 [ 5.884433] PC is at kthread_data+0xc/0x14 [ 5.888725] LR is at wq_worker_sleeping+0x14/0xc8 [ 5.893654] pc : [<c0287ac8>] lr : [<c0281eb4>] psr: 00070193 [ 5.893654] sp : de09bb00 ip : 00000000 fp : de09bbbc [ 5.905691] r10: de081940 r9 : de099980 r8 : dfac4080 [ 5.911165] r7 : c0893c94 r6 : 00000000 r5 : 1ede1000 r4 : 00000000 [ 5.918007] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : de099980 [ 5.924849] Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 5.932420] Control: 10c5387d Table: 9e58c019 DAC: 00000015 [ 5.938441] Process kworker/u2:0 (pid: 6, stack limit = 0xde09a250) [ 5.945009] Stack: (0xde09bb00 to 0xde09c000) [ 5.949576] bb00: de099d14 c0884148 de0312c0 00000003 c08fe1a0 0000001a 00000013 0000000e [ 5.958153] bb20: 00000007 c026a7b4 c0ce3080 c0ce3080 de099f50 dfac168c c0ce3080 c0ce3080 [ 5.966730] bb40: c0ced604 c0ced594 c0cee834 de09a008 c032eef0 de099980 00000000 de084e00 [ 5.975306] bb60: 00000001 c02c7814 00000000 c0268c6c de034040 c0268cc8 de099980 c0de82d4 [ 5.983882] bb80: c089503c c032d038 c0ce7040 c0ce03a8 de099980 c026a43c de09bb98 c0ce7040 [ 5.992458] bba0: 00000001 de099c90 de099978 de099c90 c0de5188 de081940 de099980 c026a7b4 [ 6.001034] bbc0: 0000000b de09bbd8 00000001 de09a000 de09a000 de099cd8 de09bbd8 de09bbd8 [ 6.009610] bbe0: 00000017 c0cf3094 de09bd90 de09a000 0000000b 00000017 c0de5188 de099980 [ 6.018186] bc00: de09a000 c021f64c de09a250 0000000b c0eaedcc 60070113 c0b54af4 0000001c [ 6.026762] bc20: 00000017 00000000 de09bd90 0000001c de099980 c0d9b268 c0eaedcc c087d0ac [ 6.035338] bc40: 00000017 c08898f8 60070013 ffffffff de09bc8c c0887fc0 c0dec1a8 20070093 [ 6.043912] bc60: c0d3e374 00000394 00000037 c0dec1a8 c0dec1a8 c0d3e36c 00000003 00000000 [ 6.052489] bc80: 00000001 60070013 00000000 de09bca0 c02bc968 c02bc96c 60070013 ffffffff [ 6.061065] bca0: 00000000 00000000 de09bd10 00000031 c0decab4 00000037 ff0a0004 de09bd90 [ 6.069641] bcc0: 0000001c 00000017 0000001c de09bd90 de4a8700 c0d9b268 c0eaedcc c0889b5c [ 6.078217] bce0: 00000017 c0889af0 c0cf40a0 c0209238 00000003 c0b2f280 00000012 c0655818 [ 6.086792] bd00: c0b2f280 de09bdcc c0b28f9c c03f1aac 53425553 45545359 6c703d4d 6f667461 [ 6.095369] bd20: 44006d72 43495645 702b3d45 6674616c 3a6d726f 30333834 30303065 64636c2e [ 6.103945] bd40: c0e90063 c03f1508 000024ae de7e4e28 de4c8718 de7e4e28 de596f38 c03f1508 [ 6.112522] bd60: de7e4e90 c065c690 de09bd68 de09bd68 de7e4e28 de7e4e28 c061663c 60070013 [ 6.121098] bd80: ffffffff de09bdc4 de190200 c0887f58 00000000 20070093 c0d3e374 00000394 [ 6.129673] bda0: de6abc00 fffffffa de4a8700 de4a8700 de190200 de4a8700 c0d9b268 c0eaedcc [ 6.138250] bdc0: 00000000 de09bdd8 c0636244 c061663c 60070013 ffffffff 00000394 de6abc00 [ 6.146825] bde0: fffffffa c0636244 de6abc00 fffffffa de4a8700 c0d9b3e4 de190200 c0636734 [ 6.155401] be00: 00000000 c0621c90 00000001 c0eaedac de678080 de6abc00 00000000 00000000 [ 6.163977] be20: 00000000 c0d9b27c 00000003 de09a030 00000000 c061f00c de6abc00 c0d9b2c0 [ 6.172553] be40: de190200 c062121c 00000000 c03f4818 de190210 de190218 de190210 c0d9b27c [ 6.181129] be60: c0ddfc48 c065b074 c065b054 de190210 c0eaeebc c06591d0 c0ddfc48 c065b180 [ 6.189705] be80: c0d9b27c 00000000 de190210 c0659428 c0ddfc48 de036900 00000000 c0657488 [ 6.198281] bea0: de0bff70 de678838 de190210 de190244 c0d9c890 c065900c de190210 de190210 [ 6.206857] bec0: c0d9c890 c06584fc de190210 c0d9c690 c0d9c6a8 c06589f0 c0658970 c0d9c6c4 [ 6.215433] bee0: de033d80 c0dd6d5c de035c00 c0280e78 00000000 de035c60 c0de8a00 00000000 [ 6.224009] bf00: de033d80 de033d80 de035c00 de035c14 de09a028 de09a000 de033d98 00000088 [ 6.232586] bf20: de035c00 c028181c c0dd6969 de035c00 de035c14 de035c60 de035d94 c0ce70c0 [ 6.241161] bf40: 00000000 de02e7c0 00000000 de033d80 c02817c4 00000000 00000000 00000000 [ 6.249738] bf60: 00000000 c0287498 55d15704 00000000 956dd865 de033d80 00000000 00000000 [ 6.258313] bf80: de09bf80 de09bf80 00000001 00010001 de09bf90 de09bf90 de09bfac de02e7c0 [ 6.266888] bfa0: c02873b8 00000000 00000000 c021aec8 00000000 00000000 00000000 00000000 [ 6.275463] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 6.284040] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 57564d7b 0d7fd176 [ 6.292622] [<c0287ac8>] (kthread_data) from [<c0281eb4>] (wq_worker_sleeping+0x14/0xc8) [ 6.301120] [<c0281eb4>] (wq_worker_sleeping) from [<c0884148>] (__schedule+0x4b4/0x774) [ 6.309613] [<c0884148>] (__schedule) from [<c026a7b4>] (do_exit+0x6e0/0x9c0) [ 6.317101] [<c026a7b4>] (do_exit) from [<c021f64c>] (die+0x30c/0x31c) [ 6.323950] [<c021f64c>] (die) from [<c087d0ac>] (__do_kernel_fault.part.10+0x6c/0x7c) [ 6.332260] [<c087d0ac>] (__do_kernel_fault.part.10) from [<c08898f8>] (do_page_fault.part.11+0x1c4/0x3bc) [ 6.342388] [<c08898f8>] (do_page_fault.part.11) from [<c0889b5c>] (do_page_fault+0x6c/0x74) [ 6.351238] [<c0889b5c>] (do_page_fault) from [<c0209238>] (do_DataAbort+0x40/0xa4) [ 6.359268] [<c0209238>] (do_DataAbort) from [<c0887f58>] (__dabt_svc+0x38/0x60) [ 6.367020] Exception stack(0xde09bd90 to 0xde09bdd8) [ 6.372315] bd80: 00000000 20070093 c0d3e374 00000394 [ 6.380891] bda0: de6abc00 fffffffa de4a8700 de4a8700 de190200 de4a8700 c0d9b268 c0eaedcc [ 6.389466] bdc0: 00000000 de09bdd8 c0636244 c061663c 60070013 ffffffff [ 6.396405] [<c0887f58>] (__dabt_svc) from [<c061663c>] (drm_fbdev_cma_fini+0xc/0xa4) [ 6.404622] [<c061663c>] (drm_fbdev_cma_fini) from [<c0636244>] (tilcdc_unload+0x1c/0x12c) [ 6.413291] [<c0636244>] (tilcdc_unload) from [<c0636734>] (tilcdc_load+0x3b8/0x528) [ 6.421415] [<c0636734>] (tilcdc_load) from [<c061f00c>] (drm_dev_register+0xb0/0x10c) [ 6.429720] [<c061f00c>] (drm_dev_register) from [<c062121c>] (drm_platform_init+0x58/0xfc) [ 6.438480] [<c062121c>] (drm_platform_init) from [<c065b074>] (platform_drv_probe+0x20/0x50) [ 6.447427] [<c065b074>] (platform_drv_probe) from [<c06591d0>] (driver_probe_device+0x154/0x3ac) [ 6.456734] [<c06591d0>] (driver_probe_device) from [<c0657488>] (bus_for_each_drv+0x60/0x94) [ 6.465677] [<c0657488>] (bus_for_each_drv) from [<c065900c>] (device_attach+0x7c/0x90) [ 6.474072] [<c065900c>] (device_attach) from [<c06584fc>] (bus_probe_device+0x8c/0xb0) [ 6.482469] [<c06584fc>] (bus_probe_device) from [<c06589f0>] (deferred_probe_work_func+0x80/0xcc) [ 6.491867] [<c06589f0>] (deferred_probe_work_func) from [<c0280e78>] (process_one_work+0x14c/0x3fc) [ 6.501446] [<c0280e78>] (process_one_work) from [<c028181c>] (worker_thread+0x58/0x5e4) [ 6.509933] [<c028181c>] (worker_thread) from [<c0287498>] (kthread+0xe0/0xf8) [ 6.517510] [<c0287498>] (kthread) from [<c021aec8>] (ret_from_fork+0x14/0x20) [ 6.525084] Code: e12fff1e e52de004 e8bd4000 e5903368 (e5130014) [ 6.531472] ---[ end trace 292c7d4db66d87b0 ]--- [ 6.536310] Fixing recursive fault but reboot is needed!