I just did this: rmmod imx-media modprobe imx-media and was greeted by the below kernel messages. I don't think this has been the first issue I found with the iMX media stuff involving a module unload/reload cycle - may I suggest that this is added to the testing regime for this code? Thanks. imx-media: Removing imx-media ipu1_vdic: Removing ipu1_ic_prp: Removing ipu1_ic_prpenc: Removing ipu1_ic_prpvf: Removing ipu2_vdic: Removing ipu2_ic_prp: Removing ipu2_ic_prpenc: Removing ipu2_ic_prpvf: Removing imx_media: module is from the staging directory, the quality is unknown, you have been warned. ipu2_ic_prpvf: Registered ipu2_ic_prpvf capture as /dev/video2 imx-media: subdev ipu2_ic_prpvf bound ipu2_ic_prpenc: Registered ipu2_ic_prpenc capture as /dev/video3 imx-media: subdev ipu2_ic_prpenc bound imx-media: subdev ipu2_ic_prp bound imx-media: subdev ipu2_vdic bound ipu1_ic_prpvf: Registered ipu1_ic_prpvf capture as /dev/video4 imx-media: subdev ipu1_ic_prpvf bound ipu1_ic_prpenc: Registered ipu1_ic_prpenc capture as /dev/video5 imx-media: subdev ipu1_ic_prpenc bound imx-media: subdev ipu1_ic_prp bound imx-media: subdev ipu1_vdic bound kobject (ddca68f0): tried to init an initialized object, something is seriously wrong. CPU: 1 PID: 31521 Comm: modprobe Tainted: G C 5.2.0+ #325 Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [<c0019560>] (unwind_backtrace) from [<c0014734>] (show_stack+0x10/0x14) [<c0014734>] (show_stack) from [<c084573c>] (dump_stack+0x9c/0xd4) [<c084573c>] (dump_stack) from [<c084a878>] (kobject_init+0x74/0x94) [<c084a878>] (kobject_init) from [<c04b2a70>] (device_initialize+0x1c/0xec) [<c04b2a70>] (device_initialize) from [<c04b4ad0>] (device_register+0xc/0x18) [<c04b4ad0>] (device_register) from [<c0599484>] (__video_register_device+0x9b4/0x1228) [<c0599484>] (__video_register_device) from [<bf129fac>] (imx_media_capture_device_register+0x44/0x1f4 [imx_media_capture]) [<bf129fac>] (imx_media_capture_device_register [imx_media_capture]) from [<bf130bf8>] (csi_registered+0x154/0x19c [imx_media_csi]) [<bf130bf8>] (csi_registered [imx_media_csi]) from [<c05a062c>] (v4l2_device_register_subdev+0xd0/0x164) [<c05a062c>] (v4l2_device_register_subdev) from [<c05abed0>] (v4l2_async_match_notify+0x1c/0x130) [<c05abed0>] (v4l2_async_match_notify) from [<c05ac02c>] (v4l2_async_notifier_try_all_subdevs+0x48/0x94) [<c05ac02c>] (v4l2_async_notifier_try_all_subdevs) from [<c05ac6f4>] (__v4l2_async_notifier_register+0xa8/0x110) [<c05ac6f4>] (__v4l2_async_notifier_register) from [<c05ac7ec>] (v4l2_async_notifier_register+0x3c/0x54) [<c05ac7ec>] (v4l2_async_notifier_register) from [<bf01ef64>] (imx_media_dev_notifier_register+0x2c/0x70 [imx_media]) [<bf01ef64>] (imx_media_dev_notifier_register [imx_media]) from [<bf01e090>] (imx_media_probe+0x3c/0x8c [imx_media]) [<bf01e090>] (imx_media_probe [imx_media]) from [<c04b9178>] (platform_drv_probe+0x48/0x98) [<c04b9178>] (platform_drv_probe) from [<c04b7298>] (really_probe+0x1d8/0x2c0) [<c04b7298>] (really_probe) from [<c04b7554>] (driver_probe_device+0x5c/0x174) [<c04b7554>] (driver_probe_device) from [<c04b7814>] (device_driver_attach+0x58/0x60) [<c04b7814>] (device_driver_attach) from [<c04b78a0>] (__driver_attach+0x84/0xc0) [<c04b78a0>] (__driver_attach) from [<c04b5968>] (bus_for_each_dev+0x58/0x7c) [<c04b5968>] (bus_for_each_dev) from [<c04b6768>] (bus_add_driver+0xd0/0x1cc) [<c04b6768>] (bus_add_driver) from [<c04b848c>] (driver_register+0x7c/0x110) [<c04b848c>] (driver_register) from [<c000b05c>] (do_one_initcall+0x74/0x308) [<c000b05c>] (do_one_initcall) from [<c00d9b78>] (do_init_module+0x5c/0x1f4) [<c00d9b78>] (do_init_module) from [<c00d8be4>] (load_module+0x19a4/0x2020) [<c00d8be4>] (load_module) from [<c00d9438>] (sys_finit_module+0x8c/0x98) [<c00d9438>] (sys_finit_module) from [<c0009000>] (ret_fast_syscall+0x0/0x28) Exception stack(0xdb677fa8 to 0xdb677ff0) 7fa0: 00b04170 00000000 00000003 007bd84c 00000000 00b05cb8 7fc0: 00b04170 00000000 1ee84500 0000017b 00040000 00000000 00b04eb8 00000000 7fe0: be958178 be958168 007b54bb b6c28712 ipu1_csi0: Registered ipu1_csi0 capture as /dev/video6 imx-media: subdev ipu1_csi0 bound kobject (dcd780f0): tried to init an initialized object, something is seriously wrong. CPU: 1 PID: 31521 Comm: modprobe Tainted: G C 5.2.0+ #325 Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [<c0019560>] (unwind_backtrace) from [<c0014734>] (show_stack+0x10/0x14) [<c0014734>] (show_stack) from [<c084573c>] (dump_stack+0x9c/0xd4) [<c084573c>] (dump_stack) from [<c084a878>] (kobject_init+0x74/0x94) [<c084a878>] (kobject_init) from [<c04b2a70>] (device_initialize+0x1c/0xec) [<c04b2a70>] (device_initialize) from [<c04b4ad0>] (device_register+0xc/0x18) [<c04b4ad0>] (device_register) from [<c0599484>] (__video_register_device+0x9b4/0x1228) [<c0599484>] (__video_register_device) from [<bf129fac>] (imx_media_capture_device_register+0x44/0x1f4 [imx_media_capture]) [<bf129fac>] (imx_media_capture_device_register [imx_media_capture]) from [<bf130bf8>] (csi_registered+0x154/0x19c [imx_media_csi]) [<bf130bf8>] (csi_registered [imx_media_csi]) from [<c05a062c>] (v4l2_device_register_subdev+0xd0/0x164) [<c05a062c>] (v4l2_device_register_subdev) from [<c05abed0>] (v4l2_async_match_notify+0x1c/0x130) [<c05abed0>] (v4l2_async_match_notify) from [<c05ac02c>] (v4l2_async_notifier_try_all_subdevs+0x48/0x94) [<c05ac02c>] (v4l2_async_notifier_try_all_subdevs) from [<c05ac6f4>] (__v4l2_async_notifier_register+0xa8/0x110) [<c05ac6f4>] (__v4l2_async_notifier_register) from [<c05ac7ec>] (v4l2_async_notifier_register+0x3c/0x54) [<c05ac7ec>] (v4l2_async_notifier_register) from [<bf01ef64>] (imx_media_dev_notifier_register+0x2c/0x70 [imx_media]) [<bf01ef64>] (imx_media_dev_notifier_register [imx_media]) from [<bf01e090>] (imx_media_probe+0x3c/0x8c [imx_media]) [<bf01e090>] (imx_media_probe [imx_media]) from [<c04b9178>] (platform_drv_probe+0x48/0x98) [<c04b9178>] (platform_drv_probe) from [<c04b7298>] (really_probe+0x1d8/0x2c0) [<c04b7298>] (really_probe) from [<c04b7554>] (driver_probe_device+0x5c/0x174) [<c04b7554>] (driver_probe_device) from [<c04b7814>] (device_driver_attach+0x58/0x60) [<c04b7814>] (device_driver_attach) from [<c04b78a0>] (__driver_attach+0x84/0xc0) [<c04b78a0>] (__driver_attach) from [<c04b5968>] (bus_for_each_dev+0x58/0x7c) [<c04b5968>] (bus_for_each_dev) from [<c04b6768>] (bus_add_driver+0xd0/0x1cc) [<c04b6768>] (bus_add_driver) from [<c04b848c>] (driver_register+0x7c/0x110) [<c04b848c>] (driver_register) from [<c000b05c>] (do_one_initcall+0x74/0x308) [<c000b05c>] (do_one_initcall) from [<c00d9b78>] (do_init_module+0x5c/0x1f4) [<c00d9b78>] (do_init_module) from [<c00d8be4>] (load_module+0x19a4/0x2020) [<c00d8be4>] (load_module) from [<c00d9438>] (sys_finit_module+0x8c/0x98) [<c00d9438>] (sys_finit_module) from [<c0009000>] (ret_fast_syscall+0x0/0x28) Exception stack(0xdb677fa8 to 0xdb677ff0) 7fa0: 00b04170 00000000 00000003 007bd84c 00000000 00b05cb8 7fc0: 00b04170 00000000 1ee84500 0000017b 00040000 00000000 00b04eb8 00000000 7fe0: be958178 be958168 007b54bb b6c28712 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000064 pgd = db720000 [00000064] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: imx_media(C+) caam_jr imx_media_vdic(C) imx_media_ic(C) snd_soc_imx_spdif imx_thermal imx_media_csi(C) imx_media_capture(C) snd_soc_imx_audmux imx219 snd_soc_sgtl5000 imx6_mipi_csi2(C) nvmem_imx_ocotp mux_mmio video_mux caam mux_core error imx_sdma virt_dma coda v4l2_mem2mem rc_cec snd_soc_fsl_spdif imx_vdoa videobuf2_dma_contig snd_soc_fsl_ssi imx_pcm_dma dw_hdmi_ahb_audio dw_hdmi_cec etnaviv gpu_sched v4l2_fwnode imx_media_common(C) imx6q_cpufreq rc_pinnacle_pctv_hd nfsd [last unloaded: imx_media] CPU: 1 PID: 31521 Comm: modprobe Tainted: G C 5.2.0+ #325 Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) PC is at kobject_get+0x10/0x54 LR is at klist_node_init+0x40/0x58 pc : [<c084a61c>] lr : [<c084a304>] psr: 200d0013 sp : db677b20 ip : 600d0013 fp : dcd78000 r10: c08c9044 r9 : c0c97d20 r8 : 00000000 r7 : 00000000 r6 : deb34c10 r5 : deb049c0 r4 : 00000044 r3 : c04b23bc r2 : c0c17c94 r1 : dcc04930 r0 : 00000044 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c5387d Table: 2b72004a DAC: 00000051 Process modprobe (pid: 31521, stack limit = 0xdb676218) Stack: (0xdb677b20 to 0xdb678000) 7b20: 00000000 dcc9f300 dcc04930 c084a304 00000000 deb049c0 dcc04930 c084a3cc 7b40: 00000000 dcd780f0 00000000 c04b47b4 3a3138f0 c13c0037 00000001 c04b2af8 7b60: c13c6208 00000007 dcd780f0 000003ac c13c6608 c0599484 c0cb7f90 60060013 7b80: 00000000 00000001 00000001 c0ab9740 00000001 00000000 1bef8335 8c000030 7ba0: 7e000f99 00000080 00000000 00000000 00000000 ddca7040 dcd78000 ddca7858 7bc0: ddca784c 00000001 00000000 ddca71a0 00000000 bf129fac bf12ad00 ddd1c96c 7be0: da51f2c0 60060013 c05975cc c0089908 00000000 00000002 ddd1c938 ddca7970 7c00: db677c18 c139a374 00000003 00000000 ddca784c c0862d4c 00000001 db677c18 7c20: 00000003 ddca7970 ddd1c840 ddca784c 00000003 00000000 ddca784c 00000003 7c40: ddca7840 ddca7858 ddca78a0 00000001 ddca784c bf130bf8 00000001 ddca7a6c 7c60: c0cb8120 00002017 bf02089c ddca784c ddd1ca60 00000000 c0c97ebc ddd1ca60 7c80: 00000030 bf02089c 00000124 c05a062c d5a1c8c0 ddca784c d5a1c8c0 ddd1cbb8 7ca0: c0c97ebc c05abed0 d5a1c8c0 ddca784c ddd1cbb8 c0c97f08 c0c97ebc c05ac02c 7cc0: ddd1cbb4 ddd1cbb8 ddd1cbc8 ddd1cbd0 00000000 c05ac6f4 ddd1cbb8 00000000 7ce0: bf02089c c13c3b8c 00000000 c05ac7ec bf020518 ddd1c840 00000000 bf01ef64 7d00: fffffffe ddd1c840 00000000 bf01e090 bf01e054 deb34c10 00000000 c04b9178 7d20: c04b9130 deb34c10 c13c3a88 00000000 c13c3b8c c04b7298 deb34c10 00000000 7d40: bf02089c 00000000 c0c1e560 00000028 deb34c10 c04b7554 deb34c10 bf02089c 7d60: 00000000 deb34c10 00000000 bf02089c 00000000 c0c1e560 00000028 dce1ac00 7d80: 00000124 c04b7814 bf02089c deb34c10 00000000 c04b78a0 deb34c10 bf02089c 7da0: c04b781c c04b5968 df0812a4 deb04a10 bf02089c c403d700 c0c84cc0 c04b6768 7dc0: bf0206bc bf02089c bf023000 bf02089c bf023000 c0cb7c20 00000000 c04b848c 7de0: c04b8d04 c0cb6bc0 bf023000 c000b05c 00000001 c0c1eca4 c0cb6daf 00000cc0 7e00: 00000040 c00d9b3c 00000008 c00aa7e8 d5a1c700 c01b2110 dddcfb80 df001e00 7e20: 00000001 00000cc0 df001e00 000ecf78 c00d8b98 bf020900 c0c1e560 bf020900 7e40: d5a1c700 bf020900 c0cb8120 bf020948 dce1ac00 c00d9b78 c0cb8120 bf020948 7e60: c0cb6ca7 c0c1e560 bf020900 c00d8be4 bf02090c 00007fff bf020900 c00d688c 7e80: bf02469e c13abc64 f0a21000 bf020b20 000000c5 db677eb4 000051b8 c01cf3a0 7ea0: 00000001 00000000 c01cf4a8 00000006 00000000 00000000 00000000 bf01f0b8 7ec0: 00000003 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7ee0: 00000000 00000000 00000000 00000000 00000003 7fffffff 00000000 00000000 7f00: 00000003 007bd84c db676000 0000017b 00000000 c00d9438 7fffffff 00000000 7f20: 00000003 b6ccb000 00000000 f0a21000 000051b8 00000000 00000002 f0a2371d 7f40: f0a23a80 f0a21000 000051b8 f0a25b50 f0a23d49 f0a24b58 00002b50 00003170 7f60: 00001624 000035c8 00000000 00000000 00000000 00001614 00000027 00000028 7f80: 00000020 00000000 00000017 00000000 00b04170 00000000 1ee84500 0000017b 7fa0: c00091c4 c0009000 00b04170 00000000 00000003 007bd84c 00000000 00b05cb8 7fc0: 00b04170 00000000 1ee84500 0000017b 00040000 00000000 00b04eb8 00000000 7fe0: be958178 be958168 007b54bb b6c28712 800e0030 00000003 00000000 00000000 [<c084a61c>] (kobject_get) from [<c084a304>] (klist_node_init+0x40/0x58) [<c084a304>] (klist_node_init) from [<c084a3cc>] (klist_add_tail+0x18/0x44) [<c084a3cc>] (klist_add_tail) from [<c04b47b4>] (device_add+0x3dc/0x59c) [<c04b47b4>] (device_add) from [<c0599484>] (__video_register_device+0x9b4/0x1228) [<c0599484>] (__video_register_device) from [<bf129fac>] (imx_media_capture_device_register+0x44/0x1f4 [imx_media_capture]) [<bf129fac>] (imx_media_capture_device_register [imx_media_capture]) from [<bf130bf8>] (csi_registered+0x154/0x19c [imx_media_csi]) [<bf130bf8>] (csi_registered [imx_media_csi]) from [<c05a062c>] (v4l2_device_register_subdev+0xd0/0x164) [<c05a062c>] (v4l2_device_register_subdev) from [<c05abed0>] (v4l2_async_match_notify+0x1c/0x130) [<c05abed0>] (v4l2_async_match_notify) from [<c05ac02c>] (v4l2_async_notifier_try_all_subdevs+0x48/0x94) [<c05ac02c>] (v4l2_async_notifier_try_all_subdevs) from [<c05ac6f4>] (__v4l2_async_notifier_register+0xa8/0x110) [<c05ac6f4>] (__v4l2_async_notifier_register) from [<c05ac7ec>] (v4l2_async_notifier_register+0x3c/0x54) [<c05ac7ec>] (v4l2_async_notifier_register) from [<bf01ef64>] (imx_media_dev_notifier_register+0x2c/0x70 [imx_media]) [<bf01ef64>] (imx_media_dev_notifier_register [imx_media]) from [<bf01e090>] (imx_media_probe+0x3c/0x8c [imx_media]) [<bf01e090>] (imx_media_probe [imx_media]) from [<c04b9178>] (platform_drv_probe+0x48/0x98) [<c04b9178>] (platform_drv_probe) from [<c04b7298>] (really_probe+0x1d8/0x2c0) [<c04b7298>] (really_probe) from [<c04b7554>] (driver_probe_device+0x5c/0x174) [<c04b7554>] (driver_probe_device) from [<c04b7814>] (device_driver_attach+0x58/0x60) [<c04b7814>] (device_driver_attach) from [<c04b78a0>] (__driver_attach+0x84/0xc0) [<c04b78a0>] (__driver_attach) from [<c04b5968>] (bus_for_each_dev+0x58/0x7c) [<c04b5968>] (bus_for_each_dev) from [<c04b6768>] (bus_add_driver+0xd0/0x1cc) [<c04b6768>] (bus_add_driver) from [<c04b848c>] (driver_register+0x7c/0x110) [<c04b848c>] (driver_register) from [<c000b05c>] (do_one_initcall+0x74/0x308) [<c000b05c>] (do_one_initcall) from [<c00d9b78>] (do_init_module+0x5c/0x1f4) [<c00d9b78>] (do_init_module) from [<c00d8be4>] (load_module+0x19a4/0x2020) [<c00d8be4>] (load_module) from [<c00d9438>] (sys_finit_module+0x8c/0x98) [<c00d9438>] (sys_finit_module) from [<c0009000>] (ret_fast_syscall+0x0/0x28) Exception stack(0xdb677fa8 to 0xdb677ff0) 7fa0: 00b04170 00000000 00000003 007bd84c 00000000 00b05cb8 7fc0: 00b04170 00000000 1ee84500 0000017b 00040000 00000000 00b04eb8 00000000 7fe0: be958178 be958168 007b54bb b6c28712 Code: e92d4010 e2504000 e24dd008 0a000004 (e5d43020) ---[ end trace c0709acc637cb5de ]--- -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
