Re: [Bug Report] PM: Warning messages

[Cao Minh Hiep <cm-hiep@jinso.co.jp>]

Hi Morimoto-san

We are testing Linux upstream version-4.1-rc2 on Koelsch and Lager.
We found a bug(kernel panic) on SOUND driver when Playback a sound file.

The kernel panic logs is showed as below:
"root@linaro-nano:~# aplay audio/Track\ 10.wav
Playing WAVE 'audio/Track 10.wav' : Signed 16 bit Little Endian, Rate 
44100 Hz, Stereo
Unable to handle kernel NULL pointer dereference at virtual address 00000048
pgd = edfac000
[00000048] *pgdn0f0831, *pte\0000000, *ppte\0000000
Internal error: Oops: 17 [#1] SMP ARM
CPU: 0 PID: 2009 Comm: aplay Not tainted 4.1.0-rc2-dirty #4
Hardware name: Generic R8A7790 (Flattened Device Tree)
..."

Testing method:
# amixer set "LINEOUT Mixer DACL" on
# amixer set "DVC Out" 80%
# amixer set "DVC In" 80%
# aplay ./audio.wav

We'd like to report this problem first.
There are not this problem at version v4.0 stable.
so we are looking for the error patch that added between v4.0 and v4.1-rc2.

Best Regards,
Jinso/Cao Minh Hiep.

===========================HERE IS LOG OF SOUND TEST:

root@linaro-nano:~#
root@linaro-nano:~#
root@linaro-nano:~# amixer set "LINEOUT Mixer DACL" on
Simple mixer control 'LINEOUT Mixer DACL',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [on]
root@linaro-nano:~# amixer set "DVC Out" 80%
Simple mixer control 'DVC Out',0
   Capabilities: pvolume
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 8388607
   Mono:
   Front Left: Playback 6710886 [80%]
   Front Right: Playback 6710886 [80%]
root@linaro-nano:~# amixer set "DVC In" 80%
Simple mixer control 'DVC In',0
   Capabilities: cvolume
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 8388607
   Front Left: Capture 6710886 [80%]
   Front Right: Capture 6710886 [80%]
root@linaro-nano:~#
root@linaro-nano:~#
root@linaro-nano:~#
root@linaro-nano:~#
root@linaro-nano:~# aplay
aplay      aplaymidi
root@linaro-nano:~# aplay audio/Track\ 10.wav
Playing WAVE 'audio/Track 10.wav' : Signed 16 bit Little Endian, Rate 
44100 Hz, Stereo
root@linaro-nano:~#
root@linaro-nano:~# aplay audio/Track\ 10.wav
Playing WAVE 'audio/Track 10.wav' : Signed 16 bit Little Endian, Rate 
44100 Hz, Stereo
Unable to handle kernel NULL pointer dereference at virtual address 00000048
pgd = edfac000
[00000048] *pgdn0f0831, *pte\0000000, *ppte\0000000
Internal error: Oops: 17 [#1] SMP ARM
CPU: 0 PID: 2009 Comm: aplay Not tainted 4.1.0-rc2-dirty #4
Hardware name: Generic R8A7790 (Flattened Device Tree)
task: eeac9040 ti: eebe8000 task.ti: eebe8000
PC is at rsnd_get_adinr+0x28/0x60
LR is at rsnd_src_ssiu_start+0xdc/0x19c
pc : [<c0409790>]    lr : [<c040c068>]    psr: a0000193
sp : eebe9e58  ip : eebe9e68  fp : eebe9e64
r10: c06ed9d0  r9 : ee919d10  r8 : 00000001
r7 : 00000001  r6 : ee1cb090  r5 : 00000000  r4 : edcaa418
r3 : 00000000  r2 : eea8ce00  r1 : 80000193  r0 : edcaa418
Flags: NzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c5307d  Table: 6dfac06a  DAC: 00000015
Process aplay (pid: 2009, stack limit = 0xeebe8210)
Stack: (0xeebe9e58 to 0xeebea000)
9e40:                                                       eebe9e94 
eebe9e68
9e60: c040c068 c0409774 00000000 eebe9e78 edcaa418 ee919d20 edcaa418 
ee1cb090
9e80: 15014330 c06e5d34 eebe9eac eebe9e98 c040d510 c040bf98 eea8ce00 
edcaa410
9ea0: eebe9edc eebe9eb0 c040d654 c040d4f8 c040d55c eeb27580 00000156 
00000000
9ec0: 00000000 ee91c880 00000008 c06ed9d0 eebe9f14 eebe9ee0 c005e9f0 
c040d568
9ee0: ee427d48 ee427d98 00000000 ee91c880 ee91c8e0 c06b2be4 ee806000 
00000001
9f00: 00000008 00000000 eebe9f34 eebe9f18 c005eb34 c005e9c4 ee91c880 
c06cfdc0
9f20: c06b2be4 ee806000 eebe9f4c eebe9f38 c0061a08 c005eaf4 00000156 
00000000
9f40: eebe9f64 eebe9f50 c005e318 c0061968 00000000 00000000 eebe9f8c 
eebe9f68
9f60: c005e3b8 c005e2fc f0002000 c06b8784 eebe9fb0 10c5307d 10c5307d 
00000008
9f80: eebe9fac eebe9f90 c000a3b0 c005e334 b6f55520 60000030 ffffffff 
10c5307d
9fa0: 00000000 eebe9fb0 c0013f48 c000a378 00009235 b6f62eb2 00000069 
00000069
9fc0: b6f62ea4 00009233 00000000 a49b9752 b6f5bed0 00000008 00000000 
b6f63d90
9fe0: 00000002 be9ac470 b6f4fc25 b6f55520 60000030 ffffffff ee3fc700 
00000000
Backtrace:
[<c0409768>] (rsnd_get_adinr) from [<c040c068>] 
(rsnd_src_ssiu_start+0xdc/0x19c)
[<c040bf8c>] (rsnd_src_ssiu_start) from [<c040d510>] 
(rsnd_ssi_start+0x24/0x40)
  r9:c06e5d34 r8:15014330 r7:ee1cb090 r6:edcaa418 r5:ee919d20 r4:edcaa418
[<c040d4ec>] (rsnd_ssi_start) from [<c040d654>] 
(rsnd_ssi_interrupt+0xf8/0x12c)
  r5:edcaa410 r4:eea8ce00
[<c040d55c>] (rsnd_ssi_interrupt) from [<c005e9f0>] 
(handle_irq_event_percpu+0x38/0x130)
  r10:c06ed9d0 r9:00000008 r8:ee91c880 r7:00000000 r6:00000000 r5:00000156
  r4:eeb27580 r3:c040d55c
[<c005e9b8>] (handle_irq_event_percpu) from [<c005eb34>] 
(handle_irq_event+0x4c/0x6c)
  r10:00000000 r9:00000008 r8:00000001 r7:ee806000 r6:c06b2be4 r5:ee91c8e0
  r4:ee91c880
[<c005eae8>] (handle_irq_event) from [<c0061a08>] 
(handle_fasteoi_irq+0xac/0x134)
  r7:ee806000 r6:c06b2be4 r5:c06cfdc0 r4:ee91c880
[<c006195c>] (handle_fasteoi_irq) from [<c005e318>] 
(generic_handle_irq+0x28/0x38)
  r5:00000000 r4:00000156
[<c005e2f0>] (generic_handle_irq) from [<c005e3b8>] 
(__handle_domain_irq+0x90/0xb8)
  r5:00000000 r4:00000000
[<c005e328>] (__handle_domain_irq) from [<c000a3b0>] 
(gic_handle_irq+0x44/0x64)
  r9:00000008 r8:10c5307d r7:10c5307d r6:eebe9fb0 r5:c06b8784 r4:f0002000
[<c000a36c>] (gic_handle_irq) from [<c0013f48>] (__irq_usr+0x48/0x60)
Exception stack(0xeebe9fb0 to 0xeebe9ff8)
9fa0:                                     00009235 b6f62eb2 00000069 
00000069
9fc0: b6f62ea4 00009233 00000000 a49b9752 b6f5bed0 00000008 00000000 
b6f63d90
9fe0: 00000002 be9ac470 b6f4fc25 b6f55520 60000030 ffffffff
  r7:10c5307d r6:ffffffff r5:60000030 r4:b6f55520
Code: e5922080 e3530000 159330a4 e5922000 (e5930048)
---[ end trace 267c4161094ae10b ]---
Kernel panic - not syncing: Fatal exception in interrupt
CPU2: stopping
CPU: 2 PID: 0 Comm: swapper/2 Tainted: G      D 4.1.0-rc2-dirty #4
Hardware name: Generic R8A7790 (Flattened Device Tree)
Backtrace:
[<c0012f50>] (dump_backtrace) from [<c00130f8>] (show_stack+0x18/0x1c)
  r7:ee86dfac r6:00000000 r5:00000002 r4:00000000
[<c00130e0>] (show_stack) from [<c04ff59c>] (dump_stack+0x78/0x94)
[<c04ff524>] (dump_stack) from [<c00158f0>] (handle_IPI+0xd0/0x168)
  r5:00000002 r4:c06f03ec
[<c0015820>] (handle_IPI) from [<c000a3c8>] (gic_handle_irq+0x5c/0x64)
  r7:ee86dfac r6:ee86df78 r5:c06b8784 r4:f0002000
[<c000a36c>] (gic_handle_irq) from [<c0013c80>] (__irq_svc+0x40/0x54)
Exception stack(0xee86df78 to 0xee86dfc0)
df60:                                                       00000000 
00000000
df80: 00006dae c001f880 c06b1304 c06b84fc ee86c000 c06f0418 4000406a 
413fc0f2
dfa0: 00000000 ee86dfcc ee86dfd0 ee86dfc0 c001068c c0010690 60000013 
ffffffff
  r7:ee86dfac r6:ffffffff r5:60000013 r4:c0010690
[<c001065c>] (arch_cpu_idle) from [<c00552c8>] 
(cpu_startup_entry+0x188/0x1bc)
[<c0055140>] (cpu_startup_entry) from [<c00155f4>] 
(secondary_start_kernel+0x108/0x124)
[<c00154ec>] (secondary_start_kernel) from [<4000a46c>] (0x4000a46c)
  r5:00000015 r4:6e85406a
CPU1: stopping
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D 4.1.0-rc2-dirty #4
Hardware name: Generic R8A7790 (Flattened Device Tree)
Backtrace:
[<c0012f50>] (dump_backtrace) from [<c00130f8>] (show_stack+0x18/0x1c)
  r7:ee86bfac r6:00000000 r5:00000001 r4:00000000
[<c00130e0>] (show_stack) from [<c04ff59c>] (dump_stack+0x78/0x94)
[<c04ff524>] (dump_stack) from [<c00158f0>] (handle_IPI+0xd0/0x168)
  r5:00000001 r4:c06f03ec
[<c0015820>] (handle_IPI) from [<c000a3c8>] (gic_handle_irq+0x5c/0x64)
  r7:ee86bfac r6:ee86bf78 r5:c06b8784 r4:f0002000
[<c000a36c>] (gic_handle_irq) from [<c0013c80>] (__irq_svc+0x40/0x54)
Exception stack(0xee86bf78 to 0xee86bfc0)
bf60:                                                       00000000 
00000000
bf80: 000087f4 c001f880 c06b1304 c06b84fc ee86a000 c06f0418 4000406a 
413fc0f2
bfa0: 00000000 ee86bfcc ee86bfd0 ee86bfc0 c001068c c0010690 60000013 
ffffffff
  r7:ee86bfac r6:ffffffff r5:60000013 r4:c0010690
[<c001065c>] (arch_cpu_idle) from [<c00552c8>] 
(cpu_startup_entry+0x188/0x1bc)
[<c0055140>] (cpu_startup_entry) from [<c00155f4>] 
(secondary_start_kernel+0x108/0x124)
[<c00154ec>] (secondary_start_kernel) from [<4000a46c>] (0x4000a46c)
  r5:00000015 r4:6e85406a
CPU3: stopping
CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D 4.1.0-rc2-dirty #4
Hardware name: Generic R8A7790 (Flattened Device Tree)
Backtrace:
[<c0012f50>] (dump_backtrace) from [<c00130f8>] (show_stack+0x18/0x1c)
  r7:ee86ffac r6:00000000 r5:00000003 r4:00000000
[<c00130e0>] (show_stack) from [<c04ff59c>] (dump_stack+0x78/0x94)
[<c04ff524>] (dump_stack) from [<c00158f0>] (handle_IPI+0xd0/0x168)
  r5:00000003 r4:c06f03ec
[<c0015820>] (handle_IPI) from [<c000a3c8>] (gic_handle_irq+0x5c/0x64)
  r7:ee86ffac r6:ee86ff78 r5:c06b8784 r4:f0002000
[<c000a36c>] (gic_handle_irq) from [<c0013c80>] (__irq_svc+0x40/0x54)
Exception stack(0xee86ff78 to 0xee86ffc0)
ff60:                                                       00000000 
00000000
ff80: 0000509c c001f880 c06b1304 c06b84fc ee86e000 c06f0418 4000406a 
413fc0f2
ffa0: 00000000 ee86ffcc ee86ffd0 ee86ffc0 c001068c c0010690 600c0013 
ffffffff
  r7:ee86ffac r6:ffffffff r5:600c0013 r4:c0010690
[<c001065c>] (arch_cpu_idle) from [<c00552c8>] 
(cpu_startup_entry+0x188/0x1bc)
[<c0055140>] (cpu_startup_entry) from [<c00155f4>] 
(secondary_start_kernel+0x108/0x124)
[<c00154ec>] (secondary_start_kernel) from [<4000a46c>] (0x4000a46c)
  r5:00000015 r4:6e85406a
drm_kms_helper: panic occurred, switching back to text console
---[ end Kernel panic - not syncing: Fatal exception in interrupt