[Letux-kernel] Fixing Audio driver

Michael Mrozek EvilDragon at openpandora.org
Thu May 23 01:20:29 CEST 2019


On Mi, 2019-05-22 at 20:46 +0200, H. Nikolaus Schaller wrote:

Isn't there a way to simply blacklist them on startup?
Would be a way better workaround than "not using them", as it would
hide them from the system.

> > The problem is all those "(null) (*) [] " subdevices of card 3:
> > L15, that's obviously wrong. using those for output causes a kernel
> > oops and locks things up.
> Yes, that is known, unfortunately...
> The reason (bug) is deeply buried in the forward ported AESS stuff:
http://git.goldelico.com/?p=letux-kernel.git;a=shortlog;h=refs/heads/letux/aess-v2

> Unfortuantely we need someone who understands the original code
> (Peter? Andrey?) to fix it.
> Marek also had looked into it but has no more time to work on it.
> 
> The temporary workaround is not to use any of the null-subdevices.
> 
> > 
> > **** List of PLAYBACK Hardware Devices ****
> > card 0: Bluetooth [Bluetooth], device 0: 40122000.mcbsp-W2CBW003
> > W2CBW003-0 []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 1: Tuner [Tuner], device 0: 40124000.mcbsp-W2CBW003 W2CBW003-0 
> > []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 2: Telephony [Telephony], device 0: 40126000.mcbsp-gtm601
> > gtm601-0 []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 0: TWL6040 twl6040-legacy-0
> > []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 1: (null) (*) []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 3: (null) (*) []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 4: (null) (*) []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 5: (null) (*) []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 6: (null) (*) []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 3: L15 [Letux Cortex 15], device 7: (null) twl6040-legacy-7 []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > card 4: H58040000encode [HDMI 58040000.encoder], device 0: HDMI
> > 58040000.encoder snd-soc-dummy-dai-0 []
> >  Subdevices: 1/1
> >  Subdevice #0: subdevice #0
> > 
> > 
> > [ 6169.520948] Unable to handle kernel NULL pointer dereference at
> > virtual address 0000033c
> > [ 6169.529835] pgd = d8df5288
> > [ 6169.534309] [0000033c] *pgd=a5bfb003, *pmd=00000000
> > [ 6169.539555] Internal error: Oops: 206 [#1] PREEMPT SMP ARM
> > [ 6169.545361] Modules linked in: cdc_ether usbnet cdc_acm ctr ccm
> > usb_f_ecm usb_f_rndis u_ether libcomposite configfs arc4 bnep
> > wl18xx wlcore mac80211 cfg80211 snd_soc_omap_hdmi_audio
> > panel_boe_w677l snd_soc_dmic dwc3 snd_soc_omap_abe_twl6040
> > snd_soc_simple_card snd_soc_simple_card_utils snd_soc_twl6040
> > leds_gpio wwan_on_off omapdss snd_soc_gtm601 encoder_tpd12s015
> > connector_hdmi pwm_omap_dmtimer snd_soc_w2cbw003_bt cec pwm_bl
> > generic_adc_battery wlcore_sdio ehci_omap omapdrm dwc3_omap
> > omapdss_base drm_kms_helper snd_soc_ts3a227e gpio_twl6040
> > syscopyarea twl6040_vibra sysfillrect leds_is31fl319x sysimgblt
> > fb_sys_fops bmp280_spi palmas_pwrbutton drm
> > drm_panel_orientation_quirks usb3503 palmas_gpadc bmp280_i2c
> > bmc150_magn_i2c bmp280 bmg160_i2c hci_uart bmc150_accel_i2c
> > bmc150_magn bmg160_core bmc150_accel_core
> > [ 6169.621476]  industrialio_triggered_buffer tsc2007 btbcm
> > kfifo_buf bno055 bq27xxx_battery_i2c industrialio bq27xxx_battery
> > crtouch_mt bq2429x_charger as5013 ina2xx tca8418_keypad bluetooth
> > ecdh_generic snd_soc_omap_aess snd_soc_omap_mcpdm
> > snd_soc_omap_mcbsp snd_soc_sdma ip_tables x_tables ipv6 autofs4
> > [last unloaded: g_ether]
> > [ 6169.652225] CPU: 1 PID: 8176 Comm: aplay Tainted: G        W
> > 4.19.40-letux-lpae+ #3748
> > [ 6169.661327] Hardware name: Generic OMAP5 (Flattened Device Tree)
> > [ 6169.667716] PC is at aess_set_opp_processing+0x58/0xb0
> > [snd_soc_omap_aess]
> > [ 6169.675028] LR is at omap_aess_dai_shutdown+0x3c/0xb4
> > [snd_soc_omap_aess]
> > [ 6169.682225] pc : [<bf0ae86c>]    lr : [<bf0ade80>]    psr:
> > 80010013
> > [ 6169.688867] sp : ed4f5d00  ip : 00000000  fp : 00000000
> > [ 6169.694411] r10: ed4f4000  r9 : eb12ec8c  r8 : ed36980c
> > [ 6169.699952] r7 : 00000000  r6 : ed4d6d80  r5 : c0e03d48  r4 :
> > ed44d040
> > [ 6169.706875] r3 : 00000004  r2 : 00000000  r1 : ee336610  r0 :
> > ed44d040
> > [ 6169.713800] Flags: Nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM
> > Segment user
> > [ 6169.721363] Control: 30c5387d  Table: a943a040  DAC: 55555555
> > [ 6169.727452] Process aplay (pid: 8176, stack limit = 0x8e9b92ba)
> > [ 6169.733712] Stack: (0xed4f5d00 to 0xed4f6000)
> > [ 6169.738326] 5d00: 00000004 14505c79 00000000 ed44d040 ed44d074
> > bf0ade80 bf0ade44 ed369800
> > [ 6169.746979] 5d20: ed5f5200 c07d5eb4 ed5f5200 ed369800 ed369800
> > 00000000 00000000 c07d7334
> > [ 6169.755628] 5d40: ed5f5200 c0e03d48 ed4f5d84 e93e0780 c0e03d48
> > c07c0258 00000000 ffffffea
> > [ 6169.764281] 5d60: c0e03d48 c07c20ac ed5f5200 14505c79 00000000
> > eb12e800 eb12ec78 c07c2188
> > [ 6169.772936] 5d80: ee2ca340 ee2ca340 00000000 ee4dcd80 c0254648
> > eb12ec90 eb12ec90 14505c79
> > [ 6169.781585] 5da0: ed36b3a8 e93e0780 eb12e800 ee2ca340 eb0c0290
> > c0e03d48 e93e0780 00000041
> > [ 6169.790242] 5dc0: 00000000 c07c2360 c07c2324 c09493c8 00000000
> > c0359428 00000010 14505c79
> > [ 6169.798893] 5de0: 14505c79 e93e0780 00000000 eb0c0290 e93e0780
> > c03592e4 e93e0788 c0351ca0
> > [ 6169.807542] 5e00: edfac110 ed4f5ec0 00000002 eb0c0290 e93e0780
> > e814c000 00000000 c0364654
> > [ 6169.816194] 5e20: 94f69cc3 00000003 00000000 00000000 00000802
> > ed4f5f70 eda67f68 c0360b20
> > [ 6169.824847] 5e40: 00000006 00000000 00000002 eb0c0290 ee5de610
> > edfac110 e93e0780 ee647100
> > [ 6169.833504] 5e60: ed4f5f70 14505c79 ed4f5ec0 e93e0780 00000000
> > ed4f5ec0 ed4f5f70 e814c000
> > [ 6169.842160] 5e80: c0e03d48 00000041 81204101 c03649c8 ed4f5ec0
> > ed4f5f70 00000041 14505c79
> > [ 6169.850807] 5ea0: 00000004 c0e03d48 ed4f5f70 00000001 e814c000
> > ed4f4000 00000005 c0364aac
> > [ 6169.859452] 5ec0: ee5de610 edfac110 8165c421 00000008 e814c019
> > beb3d63c 00000000 edbc7f68
> > [ 6169.868098] 5ee0: eb0c0290 00000101 00000002 0000053e 00000000
> > 00000000 00000000 ed4f5f00
> > [ 6169.876742] 5f00: e814c010 00000ff0 e814d000 c0350eb4 e814c010
> > 00000ff0 004c2874 14505c79
> > [ 6169.885392] 5f20: 00000004 e900e780 ed1bfd00 ed1bfd40 e814c000
> > 00000000 00000000 00000002
> > [ 6169.894047] 5f40: ffffff9c 00000000 c0e03d48 14505c79 00080802
> > 00000004 c0e03d48 ffffff9c
> > [ 6169.902700] 5f60: 00080802 c03530c8 e93e0b40 e93e0b40 00000802
> > 40040000 00000006 00000100
> > [ 6169.911345] 5f80: 00000001 14505c79 00000000 ffffffff 00000004
> > 00000005 c0201204 ed4f4000
> > [ 6169.919990] 5fa0: 00000005 c0201000 00000000 ffffffff beb3d78c
> > 00080802 00404000 00510448
> > [ 6169.928640] 5fc0: 00000000 ffffffff 00000004 00000005 beb3d668
> > b6ec2394 beb3d78c 81204101
> > [ 6169.937284] 5fe0: 00000000 beb3d644 b6e54013 b6cfb936 00010030
> > beb3d78c 00000000 00000000
> > [ 6169.945985] [<bf0ae86c>] (aess_set_opp_processing
> > [snd_soc_omap_aess]) from [<bf0ade80>]
> > (omap_aess_dai_shutdown+0x3c/0xb4 [snd_soc_omap_aess])
> 
> ^^^ yes this is AESS stuff which is not properly integrated.
> 
> > [ 6169.959613] [<bf0ade80>] (omap_aess_dai_shutdown
> > [snd_soc_omap_aess]) from [<c07d5eb4>] (soc_pcm_close+0x90/0x1fc)
> > [ 6169.970569] [<c07d5eb4>] (soc_pcm_close) from [<c07d7334>]
> > (dpcm_fe_dai_close+0x48/0xdc)
> > [ 6169.979136] [<c07d7334>] (dpcm_fe_dai_close) from [<c07c0258>]
> > (snd_pcm_release_substream+0x68/0xb8)
> > [ 6169.988798] [<c07c0258>] (snd_pcm_release_substream) from
> > [<c07c20ac>] (snd_pcm_open_substream+0x90/0xb4)
> > [ 6169.998921] [<c07c20ac>] (snd_pcm_open_substream) from
> > [<c07c2188>] (snd_pcm_open+0xb8/0x1f8)
> > [ 6170.007941] [<c07c2188>] (snd_pcm_open) from [<c07c2360>]
> > (snd_pcm_playback_open+0x3c/0x5c)
> > [ 6170.016776] [<c07c2360>] (snd_pcm_playback_open) from
> > [<c0359428>] (chrdev_open+0x144/0x188)
> > [ 6170.025704] [<c0359428>] (chrdev_open) from [<c0351ca0>]
> > (do_dentry_open+0x1d0/0x39c)
> > [ 6170.033997] [<c0351ca0>] (do_dentry_open) from [<c0364654>]
> > (do_last+0xbf0/0xdbc)
> > [ 6170.041931] [<c0364654>] (do_last) from [<c03649c8>]
> > (path_openat+0x1a8/0x248)
> > [ 6170.049579] [<c03649c8>] (path_openat) from [<c0364aac>]
> > (do_filp_open+0x44/0xa8)
> > [ 6170.057514] [<c0364aac>] (do_filp_open) from [<c03530c8>]
> > (do_sys_open+0x118/0x1d4)
> > [ 6170.065613] [<c03530c8>] (do_sys_open) from [<c0201000>]
> > (ret_fast_syscall+0x0/0x4c)
> > [ 6170.073791] Exception stack(0xed4f5fa8 to 0xed4f5ff0)
> > [ 6170.079146] 5fa0:                   00000000 ffffffff beb3d78c
> > 00080802 00404000 00510448
> > [ 6170.087813] 5fc0: 00000000 ffffffff 00000004 00000005 beb3d668
> > b6ec2394 beb3d78c 81204101
> > [ 6170.096482] 5fe0: 00000000 beb3d644 b6e54013 b6cfb936
> > [ 6170.101850] Code: e5941000 e5942750 e58d3000 e591c0e8 (e592333c)
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.539555] Internal error: Oops: 206 [#1] PREEMPT SMP
> > ARM
> > 
> > [ 6170.117502] ---[ end trace 6491ce6b1c6360e2 ]---
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.727452] Process aplay (pid: 8176, stack limit =
> > 0x8e9b92ba)
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.733712] Stack: (0xed4f5d00 to 0xed4f6000)
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.738326] 5d00: 00000004 14505c79 00000000 ed44d040
> > ed44d074 bf0ade80 bf0ade44 ed369800
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.746979] 5d20: ed5f5200 c07d5eb4 ed5f5200 ed369800
> > ed369800 00000000 00000000 c07d7334
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.755628] 5d40: ed5f5200 c0e03d48 ed4f5d84 e93e0780
> > c0e03d48 c07c0258 00000000 ffffffea
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.764281] 5d60: c0e03d48 c07c20ac ed5f5200 14505c79
> > 00000000 eb12e800 eb12ec78 c07c2188
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.772936] 5d80: ee2ca340 ee2ca340 00000000 ee4dcd80
> > c0254648 eb12ec90 eb12ec90 14505c79
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.781585] 5da0: ed36b3a8 e93e0780 eb12e800 ee2ca340
> > eb0c0290 c0e03d48 e93e0780 00000041
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.790242] 5dc0: 00000000 c07c2360 c07c2324 c09493c8
> > 00000000 c0359428 00000010 14505c79
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.798893] 5de0: 14505c79 e93e0780 00000000 eb0c0290
> > e93e0780 c03592e4 e93e0788 c0351ca0
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.807542] 5e00: edfac110 ed4f5ec0 00000002 eb0c0290
> > e93e0780 e814c000 00000000 c0364654
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.816194] 5e20: 94f69cc3 00000003 00000000 00000000
> > 00000802 ed4f5f70 eda67f68 c0360b20
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.824847] 5e40: 00000006 00000000 00000002 eb0c0290
> > ee5de610 edfac110 e93e0780 ee647100
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.833504] 5e60: ed4f5f70 14505c79 ed4f5ec0 e93e0780
> > 00000000 ed4f5ec0 ed4f5f70 e814c000
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.842160] 5e80: c0e03d48 00000041 81204101 c03649c8
> > ed4f5ec0 ed4f5f70 00000041 14505c79
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.850807] 5ea0: 00000004 c0e03d48 ed4f5f70 00000001
> > e814c000 ed4f4000 00000005 c0364aac
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.859452] 5ec0: ee5de610 edfac110 8165c421 00000008
> > e814c019 beb3d63c 00000000 edbc7f68
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.868098] 5ee0: eb0c0290 00000101 00000002 0000053e
> > 00000000 00000000 00000000 ed4f5f00
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.876742] 5f00: e814c010 00000ff0 e814d000 c0350eb4
> > e814c010 00000ff0 004c2874 14505c79
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.885392] 5f20: 00000004 e900e780 ed1bfd00 ed1bfd40
> > e814c000 00000000 00000000 00000002
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.894047] 5f40: ffffff9c 00000000 c0e03d48 14505c79
> > 00080802 00000004 c0e03d48 ffffff9c
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.902700] 5f60: 00080802 c03530c8 e93e0b40 e93e0b40
> > 00000802 40040000 00000006 00000100
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.911345] 5f80: 00000001 14505c79 00000000 ffffffff
> > 00000004 00000005 c0201204 ed4f4000
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.919990] 5fa0: 00000005 c0201000 00000000 ffffffff
> > beb3d78c 00080802 00404000 00510448
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.928640] 5fc0: 00000000 ffffffff 00000004 00000005
> > beb3d668 b6ec2394 beb3d78c 81204101
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6169.937284] 5fe0: 00000000 beb3d644 b6e54013 b6cfb936
> > 00010030 beb3d78c 00000000 00000000
> > 
> > Message from syslogd at letux at May 22 18:34:53 ...
> > kernel:[ 6170.101850] Code: e5941000 e5942750 e58d3000 e591c0e8
> > (e592333c)
> > Segmentation fault
> > 
> > 
> > 
> > 
> 
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-- 
Mit freundlichen Grüßen,

Michael Mrozek

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