Hi Hans,
vimc isn't happy on Linux 5,2-rc1
When I do rmmod vimc_capture it panics. Just fine on Linux 5.1
commit 3650a23eda89 might be the problem.
[ 302.974433] general protection fault: 0000 [#1] SMP PTI
[ 302.974441] CPU: 3 PID: 1469 Comm: rmmod Not tainted 5.2.0-rc1+ #6
[ 302.974444] Hardware name: Dell Inc. OptiPlex 790/0HY9JP, BIOS A18
09/24/2013
[ 302.974453] RIP: 0010:media_gobj_destroy.part.15+0x1f/0x60
[ 302.974457] Code: ff 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55
48 89 fe 48 89 e5 53 48 89 fb 48 c7 c7 a0 67 cf b0 e8 44 fa ff ff 48 8b
03 <48> 83 80 a0 00 00 00 01 48 8b 43 18 48 8b 53 10 48 89 42 08 48 89
[ 302.974461] RSP: 0018:ffffb275c3c97ca0 EFLAGS: 00010246
[ 302.974465] RAX: 6096181706d5d9bd RBX: ffff8f28911d0c00 RCX:
00000000802a0021
[ 302.974468] RDX: ffff8f2891952278 RSI: ffff8f28911d0c00 RDI:
ffffffffb0cf67a0
[ 302.974471] RBP: ffffb275c3c97ca8 R08: 0000000001000016 R09:
ffffffffb047d100
[ 302.974474] R10: ffffb275c3c97c28 R11: 0000000000000001 R12:
0000000000000038
[ 302.974477] R13: ffff8f28c6d67d00 R14: ffff8f2891952228 R15:
ffff8f28911c6aa0
[ 302.974481] FS: 00007f9d7239e540(0000) GS:ffff8f28e5580000(0000)
knlGS:0000000000000000
[ 302.974484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 302.974487] CR2: 000055f43e465ec8 CR3: 00000001ac900005 CR4:
00000000000606e0
[ 302.974490] Call Trace:
[ 302.974496] media_gobj_destroy+0x14/0x20
[ 302.974500] __media_device_unregister_entity+0xb3/0xe0
[ 302.974506] media_device_unregister_entity+0x30/0x40
[ 302.974511] v4l2_device_unregister_subdev+0xaa/0xe0
[ 302.974517] vimc_ent_sd_unregister+0x1e/0x30 [vimc_common]
[ 302.974523] vimc_sca_comp_unbind+0x16/0x20 [vimc_scaler]
[ 302.974529] component_unbind.isra.8+0x27/0x40
[ 302.974534] component_unbind_all+0xaa/0xc0
[ 302.974540] vimc_comp_unbind+0x36/0x60 [vimc]
[ 302.974545] take_down_master+0x24/0x40
[ 302.974550] component_del+0x8b/0x110
[ 302.974556] vimc_cap_remove+0x19/0x20 [vimc_capture]
[ 302.974562] platform_drv_remove+0x25/0x50
[ 302.974567] device_release_driver_internal+0xe0/0x1b0
[ 302.974572] driver_detach+0x4a/0x90
[ 302.974577] bus_remove_driver+0x5c/0xd0
[ 302.974582] driver_unregister+0x2c/0x40
[ 302.974587] platform_driver_unregister+0x12/0x20
[ 302.974592] vimc_cap_pdrv_exit+0x10/0x4ad [vimc_capture]
[ 302.974598] __x64_sys_delete_module+0x148/0x280
[ 302.974607] do_syscall_64+0x5a/0x140
[ 302.974613] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 302.974617] RIP: 0033:0x7f9d71ec41b7
[ 302.974621] Code: 73 01 c3 48 8b 0d d1 8c 2c 00 f7 d8 64 89 01 48 83
c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f
05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 8c 2c 00 f7 d8 64 89 01 48
[ 302.974624] RSP: 002b:00007ffff44efba8 EFLAGS: 00000206 ORIG_RAX:
00000000000000b0
[ 302.974628] RAX: ffffffffffffffda RBX: 00007ffff44efc08 RCX:
00007f9d71ec41b7
[ 302.974631] RDX: 000000000000000a RSI: 0000000000000800 RDI:
000055f43e45b7d8
[ 302.974633] RBP: 000055f43e45b770 R08: 00007ffff44eeb21 R09:
0000000000000000
[ 302.974636] R10: 00007f9d71f40cc0 R11: 0000000000000206 R12:
00007ffff44efdd0
[ 302.974639] R13: 00007ffff44f08d6 R14: 000055f43e45b260 R15:
000055f43e45b770
[ 302.974648] Modules linked in: vimc_debayer vimc_sensor vimc_scaler
vimc_capture(-) v4l2_tpg vimc_common vimc_streamer vimc binfmt_misc
nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp
kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel dcdbas snd_usb_audio snd_hda_codec_hdmi input_leds
aesni_intel aes_x86_64 snd_hda_codec_realtek crypto_simd
snd_hda_codec_generic snd_usbmidi_lib ledtrig_audio snd_seq_midi
snd_seq_midi_event snd_hda_intel snd_seq cryptd snd_hda_codec
snd_rawmidi glue_helper snd_seq_device snd_hda_core intel_cstate
intel_rapl_perf snd_hwdep snd_pcm snd_timer mei_me mei serio_raw lpc_ich
mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables
autofs4 hid_generic usbhid hid nouveau mxm_wmi wmi ttm drm_kms_helper
syscopyarea sysfillrect sysimgblt fb_sys_fops drm ahci psmouse e1000e
i2c_i801 libahci video
[ 302.974702] ---[ end trace 15812ed857d8af50 ]---
[ 302.974706] RIP: 0010:media_gobj_destroy.part.15+0x1f/0x60
[ 302.974710] Code: ff 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55
48 89 fe 48 89 e5 53 48 89 fb 48 c7 c7 a0 67 cf b0 e8 44 fa ff ff 48 8b
03 <48> 83 80 a0 00 00 00 01 48 8b 43 18 48 8b 53 10 48 89 42 08 48 89
[ 302.974713] RSP: 0018:ffffb275c3c97ca0 EFLAGS: 00010246
[ 302.974716] RAX: 6096181706d5d9bd RBX: ffff8f28911d0c00 RCX:
00000000802a0021
[ 302.974719] RDX: ffff8f2891952278 RSI: ffff8f28911d0c00 RDI:
ffffffffb0cf67a0
[ 302.974722] RBP: ffffb275c3c97ca8 R08: 0000000001000016 R09:
ffffffffb047d100
[ 302.974725] R10: ffffb275c3c97c28 R11: 0000000000000001 R12:
0000000000000038
[ 302.974728] R13: ffff8f28c6d67d00 R14: ffff8f2891952228 R15:
ffff8f28911c6aa0
[ 302.974731] FS: 00007f9d7239e540(0000) GS:ffff8f28e5580000(0000)
knlGS:0000000000000000
[ 302.974734] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 302.974737] CR2: 000055f43e465ec8 CR3: 00000001ac900005 CR4:
00000000000606e0
thanks,
-- Shuah
