Openmoko Bug #2329: arecord -D plughw:0, 0 => oops BUG? (substream->stream != SNDRV_PCM_STREAM_CAPTURE)

[Openmoko Public Trac]

#2329: arecord -D plughw:0,0 => oops BUG? (substream->stream !=
SNDRV_PCM_STREAM_CAPTURE)
-----------------------------+----------------------------------------------
 Reporter:  lindi            |          Owner:  openmoko-kernel
     Type:  defect           |         Status:  new            
 Priority:  normal           |      Milestone:                 
Component:  System Software  |        Version:                 
 Severity:  normal           |       Keywords:                 
 Haspatch:  0                |      Blockedby:                 
Estimated:                   |    Patchreview:                 
 Blocking:                   |   Reproducible:  always         
-----------------------------+----------------------------------------------
 Steps to reproduce:
 1) arecord -D plughw:1,0 -t raw -r 48000 -f S16_LE -c 1 - > /dev/null
 2) arecord -D plughw:0,1 -t raw -r 48000 -f S16_LE -c 1 - > /dev/null
 3) arecord -D plughw:0,1 -t raw -r 48000 -f S16_LE -c 1 - > /dev/null
 4) arecord -D plughw:0,0 -t raw -r 48000 -f S16_LE -c 1 - > /dev/null

 Expected results:
 4) error message

 Actual results:
 4) arecord prints

 Recording raw data '-' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
 arecord: set_params:1041: Unable to install hw params:
 ACCESS:  RW_INTERLEAVED
 FORMAT:  S16_LE
 SUBFORMAT:  STD
 SAMPLE_BITS: 16
 FRAME_BITS: 16
 CHANNELS: 1
 RATE: 48000
 PERIOD_TIME: (42666 42667)
 PERIOD_SIZE: 2048
 PERIOD_BYTES: 4096
 PERIODS: (11 12)
 BUFFER_TIME: 500000
 BUFFER_SIZE: 24000
 BUFFER_BYTES: 48000
 TICK_TIME: 0

 and can not be killed. Kernel prints
 {{{
 asoc: WM8753 Voice <-> Bluetooth No matching rates
 snd_pcm_hw_constraints_complete failed
 asoc: WM8753 Voice <-> Bluetooth No matching rates
 snd_pcm_hw_constraints_complete failed
 ------------[ cut here ]------------
 WARNING: at /local/lindi/neolinux/sound/core/pcm_native.c:2644
 snd_pcm_capture_ioctl1+0x58/0x2f4 [snd_pcm]()
 BUG? (substream->stream != SNDRV_PCM_STREAM_CAPTURE)
 Modules linked in: fuse snd_soc_neo1973_gta02_wm8753 snd_soc_s3c24xx_i2s
 snd_soc_s3c24xx g_ether s3c2410_wdt ar6000 snd_soc_wm8753 snd_soc_core
 snd_pcm snd_timer snd_page_alloc s3cmci snd
 [<c00327a4>] (dump_stack+0x0/0x14) from [<c004e664>]
 (warn_slowpath+0x6c/0x88)
 [<c004e5f8>] (warn_slowpath+0x0/0x88) from [<bf0346ec>]
 (snd_pcm_capture_ioctl1+0x58/0x2f4 [snd_pcm])
  r3:bf03a1e4 r2:bf03a114
  r7:c03703f0 r6:c0844123 r5:00027ec8 r4:00027ec8
 [<bf034694>] (snd_pcm_capture_ioctl1+0x0/0x2f4 [snd_pcm]) from
 [<bf0349c0>] (snd_pcm_capture_ioctl+0x38/0x3c [snd_pcm])
  r7:c7bc7aa0 r6:c0844123 r5:c0844123 r4:00027ec8
 [<bf034988>] (snd_pcm_capture_ioctl+0x0/0x3c [snd_pcm]) from [<c00ac70c>]
 (vfs_ioctl+0x38/0x80)
 [<c00ac6d4>] (vfs_ioctl+0x0/0x80) from [<c00acde4>]
 (do_vfs_ioctl+0x170/0x188)
  r5:00027ec8 r4:00027ec8
 [<c00acc74>] (do_vfs_ioctl+0x0/0x188) from [<c00ace3c>]
 (sys_ioctl+0x40/0x60)
  r4:00000004
 [<c00acdfc>] (sys_ioctl+0x0/0x60) from [<c002dd60>]
 (ret_fast_syscall+0x0/0x2c)
  r7:00000036 r6:00027d68 r5:4010727c r4:bea5d6a4
 ---[ end trace 8e00386b028817b3 ]---
 Unable to handle kernel NULL pointer dereference at virtual address
 00000000
 pgd = c0004000
 [00000000] *pgd=00000000
 Internal error: Oops: 817 [#1]
 Modules linked in: fuse snd_soc_neo1973_gta02_wm8753 snd_soc_s3c24xx_i2s
 snd_soc_s3c24xx g_ether s3c2410_wdt ar6000 snd_soc_wm8753 snd_soc_core
 snd_pcm snd_timer snd_page_alloc s3cmci snd
 CPU: 0    Tainted: G        W   (2.6.29-GTA02_lindi2-andy-tracking-mokodev
 #1)
 PC is at __mutex_lock_slowpath+0x34/0x9c
 LR is at mutex_lock+0x20/0x24
 pc : [<c028e464>]    lr : [<c028e338>]    psr: a0000013
 sp : c6d9de58  ip : c6d9de88  fp : c6d9de84
 r10: c780ae20  r9 : c6d9c000  r8 : c7bc7aa0
 r7 : c7bbef00  r6 : c7bca420  r5 : c7bbf018  r4 : c7bbf018
 r3 : c6d9de5c  r2 : c7bbf01c  r1 : 00000000  r0 : c7bbf018
 Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
 Control: c000717f  Table: 36dac000  DAC: 00000015
 Process arecord (pid: 1438, stack limit = 0xc6d9c268)
 Stack: (0xc6d9de58 to 0xc6d9e000)
 de40:                                                       00000000
 c7bbf01c
 de60: c6d9de8c c6d9de70 c7bbef00 c7bbf018 c03703f0 c7bbef00 c6d9de94
 c6d9de88
 de80: c028e338 c028e440 c6d9debc c6d9de98 bf032338 c028e328 00000008
 c7bc7aa0
 dea0: 00000008 c7bccd24 00000000 c74bd594 c6d9deec c6d9dec0 c00a1718
 bf0322f8
 dec0: 00000000 00000000 c7bc7aa0 00000000 c784d520 00000000 c784d520
 00000000
 dee0: c6d9defc c6d9def0 c00a1a78 c00a1644 c6d9df1c c6d9df00 c009e668
 c00a1a54
 df00: c6d9df08 00000001 00000010 c7bbec00 c6d9df44 c6d9df20 c0050b5c
 c009e5fc
 df20: c784d520 00000001 00000100 000000f8 c002df08 00000000 c6d9df5c
 c6d9df48
 df40: c0050bb0 c0050b10 c7bca420 00000001 c6d9df6c c6d9df60 c0050c0c
 c0050b88
 df60: c6d9df7c c6d9df70 c0051fc4 c0050bf4 c6d9df94 c6d9df80 c0052130
 c0051ea8
 df80: c0034d5c 00096e40 c6d9dfa4 c6d9df98 c005217c c00520b0 00000000
 c6d9dfa8
 dfa0: c002dd60 c0052174 00096e40 00096e1c 00000001 00000001 fbad2088
 00000008
 dfc0: 00096e40 00096e1c 4031d764 000000f8 bea5dda0 bea5dd30 0000bb80
 bea5e08c
 dfe0: 401ce000 bea5dd20 4022259c 40288310 60000010 00000001 00000000
 00000000
 Backtrace:
 [<c028e430>] (__mutex_lock_slowpath+0x0/0x9c) from [<c028e338>]
 (mutex_lock+0x20/0x24)
  r7:c7bbef00 r6:c03703f0 r5:c7bbf018 r4:c7bbef00
 [<c028e318>] (mutex_lock+0x0/0x24) from [<bf032338>]
 (snd_pcm_release+0x50/0xac [snd_pcm])
 [<bf0322e8>] (snd_pcm_release+0x0/0xac [snd_pcm]) from [<c00a1718>]
 (__fput+0xe4/0x18c)
  r8:c74bd594 r7:00000000 r6:c7bccd24 r5:00000008 r4:c7bc7aa0
 [<c00a1634>] (__fput+0x0/0x18c) from [<c00a1a78>] (fput+0x34/0x38)
 [<c00a1a44>] (fput+0x0/0x38) from [<c009e668>] (filp_close+0x7c/0x88)
 [<c009e5ec>] (filp_close+0x0/0x88) from [<c0050b5c>]
 (close_files+0x5c/0x78)
  r6:c7bbec00 r5:00000010 r4:00000001
 [<c0050b00>] (close_files+0x0/0x78) from [<c0050bb0>]
 (put_files_struct+0x38/0x6c)
 [<c0050b78>] (put_files_struct+0x0/0x6c) from [<c0050c0c>]
 (exit_files+0x28/0x2c)
  r5:00000001 r4:c7bca420
 [<c0050be4>] (exit_files+0x0/0x2c) from [<c0051fc4>] (do_exit+0x12c/0x208)
 [<c0051e98>] (do_exit+0x0/0x208) from [<c0052130>]
 (do_group_exit+0x90/0xc4)
 [<c00520a0>] (do_group_exit+0x0/0xc4) from [<c005217c>]
 (sys_exit_group+0x18/0x20)
  r4:00096e40
 [<c0052164>] (sys_exit_group+0x0/0x20) from [<c002dd60>]
 (ret_fast_syscall+0x0/0x2c)
 Code: e24b3028 e5823004 e50b2028 e1a04000 (e5813000)
 ---[ end trace 8e00386b028817b4 ]---
 Fixing recursive fault but reboot is needed!
 }}}

 More info:
 1) andy-tracking a3587e4ed77974ad with DEBUG and PREEMPT disabled.

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2329>
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