[alsa-devel] segmentation fault for snd_pcm_open after sudden removal for USB Camera (with USB Mic)
Kuldeep Ghan
dhp764 at motorola.com
Fri Jul 13 20:29:15 CEST 2012
Hi All,
I am seeing segmentation fault in alsa-lib while recording using USB
Camera. Following is the test setup
1. Moto Razr (Android ICS, alsa-lib 1.0.24.1) is connected to Smart Dock
2. USB Camera (Philips SPC 1330NC) is connected to Razr through dock
While Video recording from USB Camera, suddenly Power Cable of Dock or USB
camera is removed, effectively resulting in USB camera removal from Razr.
The recording continues with still view, but when I stop recording session,
the snd_pcm_open to Play stop tone results in the crash as shown below.
Although we are using internal device mic for capture, the USB camera has
USB microphone which gets enumerated as card2, device 0.
I did some debugging with help of prints in alsa-lib but was not really
helpful to point to root cause. Logs with my added prints for snd_pcm_open
successful(*successful_open.txt*) and segmentation fault(*segfault_open.txt*)
case are attached.
I am not very familiar with alsa-lib internals. Is this a known issue?
Segmentation fault goes away with upgrade of alsa-lib to 1.0.25. But
currently Kernel is 1.0.24, and we can't upgrade the kernel at this time,
so is there any problem running lib 25 wither kernel 24? If so, do you
have any suggestion of what fixes from .25 I should try back-porting?"
07-13 14:42:14.517 160 312 D AudioHardwareALSA: openOutputStream called
for devices: 0x00000002
07-13 14:42:14.517 160 312 D Omap4ALSA: open called for devices
00000002 in mode 0...
07-13 14:42:14.524 160 312 F libc : Fatal signal 11 (SIGSEGV) at
0x00008140 (code=1)
07-13 14:42:14.532 6173 6173 I DEBUG : *** *** *** *** *** *** *** ***
*** *** *** *** *** *** *** ***
07-13 14:42:14.532 6173 6173 I DEBUG : Build fingerprint:
'ATT/edison_att_us/edison:4.0.4/6.7.2_245/3202:userdebug/test-keys'
07-13 14:42:14.532 6173 6173 I DEBUG : pid: 160, tid: 312 >>>
/system/bin/mediaserver <<<
07-13 14:42:14.532 6173 6173 I DEBUG : signal 11 (SIGSEGV), code 1
(SEGV_MAPERR), fault addr 00008140
07-13 14:42:14.532 6173 6173 I DEBUG : tls: 41623f00
07-13 14:42:14.532 6173 6173 I DEBUG :
07-13 14:42:14.532 6173 6173 I DEBUG : r0 0050e7fd r1 00000004 r2
00000011 r3 00008130
07-13 14:42:14.532 6173 6173 I DEBUG : r4 b0009f58 r5 41623928 r6
4162390c r7 000081fc
07-13 14:42:14.532 6173 6173 I DEBUG : r8 0000841c r9 41623928 10
003e1dd0 fp 4162398c
07-13 14:42:14.532 6173 6173 I DEBUG : ip 00755f6c sp 416238d0 lr
b00039f3 pc b00039f6 cpsr 48000030
07-13 14:42:14.532 6173 6173 I DEBUG : d0 636e75665f646e67 d1
6c75616665642e65
07-13 14:42:14.532 6173 6173 I DEBUG : d2 612f61736c612f74 d3
666e6f632e617365
07-13 14:42:14.532 6173 6173 I DEBUG : d4 0000000000000000 d5
0000100000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d6 0000100045800000 d7
0000100000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d8 0000000000000000 d9
0000000000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d10 0000000000000000 d11
0000000000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d12 0000000000000000 d13
0000000000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d14 0000000000000000 d15
0000000000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d16 0000000006ba1000 d17
3fdfffffe8287c00
07-13 14:42:14.532 6173 6173 I DEBUG : d18 3fe0000000000000 d19
3fe000000bebc200
07-13 14:42:14.532 6173 6173 I DEBUG : d20 0000000000000000 d21
0000000000000000
07-13 14:42:14.532 6173 6173 I DEBUG : d22 0000000000000000 d23
0000000000000000
07-13 14:42:14.540 6173 6173 I DEBUG : d24 0000000000000000 d25
0000000000000000
07-13 14:42:14.540 6173 6173 I DEBUG : d26 0000000000000000 d27
0000000000000000
07-13 14:42:14.540 6173 6173 I DEBUG : d28 0000000000000000 d29
0000000000000000
07-13 14:42:14.540 6173 6173 I DEBUG : d30 0000000000000000 d31
0000000000000000
07-13 14:42:14.540 6173 6173 I DEBUG : scr 80000010
07-13 14:42:14.540 6173 6173 I DEBUG :
07-13 14:42:15.126 6173 6173 I DEBUG : #00 pc b00039f6
/system/bin/linker
07-13 14:42:15.126 6173 6173 I DEBUG : #01 lr b00039f3
/system/bin/linker
07-13 14:42:15.126 6173 6173 I DEBUG :
07-13 14:42:15.126 6173 6173 I DEBUG : code around pc:
07-13 14:42:15.126 6173 6173 I DEBUG : b00039d4 00005b8e 47f0e92d
f8d04604 469170b0 .[..-..G.F...p.F
07-13 14:42:15.126 6173 6173 I DEBUG : b00039e4 80acf8d0 f8d44608
f7fd10b4 f8d4ef4e .....F......N...
07-13 14:42:15.134 6173 6173 I DEBUG : b00039f4 f85330bc e0125021
187e0129 46495878 .0S.!P..).~.xXIF
07-13 14:42:15.134 6173 6173 I DEBUG : b0003a04 f7fd4440 b930ece8
09037b30 2a011e5a @D....0.0{..Z..*
07-13 14:42:15.134 6173 6173 I DEBUG : b0003a14 89f1d801 f8d4b931
f85660c0 2d005025 ....1....`V.%P.-
07-13 14:42:15.134 6173 6173 I DEBUG :
07-13 14:42:15.134 6173 6173 I DEBUG : code around lr:
07-13 14:42:15.134 6173 6173 I DEBUG : b00039d0 00011708 00005b8e
47f0e92d f8d04604 .....[..-..G.F..
07-13 14:42:15.134 6173 6173 I DEBUG : b00039e0 469170b0 80acf8d0
f8d44608 f7fd10b4 .p.F.....F......
07-13 14:42:15.134 6173 6173 I DEBUG : b00039f0 f8d4ef4e f85330bc
e0125021 187e0129 N....0S.!P..).~.
07-13 14:42:15.134 6173 6173 I DEBUG : b0003a00 46495878 f7fd4440
b930ece8 09037b30 xXIF at D....0.0{..
07-13 14:42:15.134 6173 6173 I DEBUG : b0003a10 2a011e5a 89f1d801
f8d4b931 f85660c0 Z..*....1....`V.
07-13 14:42:15.134 6173 6173 I DEBUG :
07-13 14:42:15.134 6173 6173 I DEBUG : memory map around addr 00008140:
07-13 14:42:15.134 6173 6173 I DEBUG : (no map below)
07-13 14:42:15.134 6173 6173 I DEBUG : (no map for address)
07-13 14:42:15.134 6173 6173 I DEBUG : 003dc000-0047f000 [heap]
07-13 14:42:15.134 6173 6173 I DEBUG :
07-13 14:42:15.134 6173 6173 I DEBUG : stack:
07-13 14:42:15.134 6173 6173 I DEBUG : 41623890 00000000
07-13 14:42:15.134 6173 6173 I DEBUG : 41623894 00000000
07-13 14:42:15.134 6173 6173 I DEBUG : 41623898 00000000
07-13 14:42:15.134 6173 6173 I DEBUG : 4162389c 00000000
07-13 14:42:15.134 6173 6173 I DEBUG : 416238a0 400ec588
07-13 14:42:15.134 6173 6173 I DEBUG : 416238a4 ffffffff
07-13 14:42:15.134 6173 6173 I DEBUG : 416238a8 410d3eb8
/system/lib/libasound.so
07-13 14:42:15.134 6173 6173 I DEBUG : 416238ac 416238d4
07-13 14:42:15.134 6173 6173 I DEBUG : 416238b0 003e1dd0 [heap]
07-13 14:42:15.134 6173 6173 I DEBUG : 416238b4 416238d0
07-13 14:42:15.134 6173 6173 I DEBUG : 416238b8 416238cc
07-13 14:42:15.134 6173 6173 I DEBUG : 416238bc 4162392c
07-13 14:42:15.134 6173 6173 I DEBUG : 416238c0 416238fc
07-13 14:42:15.134 6173 6173 I DEBUG : 416238c4 055f67d1
07-13 14:42:15.134 6173 6173 I DEBUG : 416238c8 df0027ad
07-13 14:42:15.134 6173 6173 I DEBUG : 416238cc 00000000
07-13 14:42:15.134 6173 6173 I DEBUG : #00 416238d0 b0009f58
/system/bin/linker
07-13 14:42:15.134 6173 6173 I DEBUG : 416238d4 41623928
07-13 14:42:15.134 6173 6173 I DEBUG : 416238d8 4162390c
07-13 14:42:15.134 6173 6173 I DEBUG : 416238dc 055f67d1
07-13 14:42:15.142 6173 6173 I DEBUG : 416238e0 41623928
07-13 14:42:15.142 6173 6173 I DEBUG : 416238e4 00476150 [heap]
07-13 14:42:15.142 6173 6173 I DEBUG : 416238e8 003e1dd0 [heap]
07-13 14:42:15.142 6173 6173 I DEBUG : 416238ec b0003d65
/system/bin/linker
07-13 14:42:15.142 6173 6173 I DEBUG : 416238f0 ffffffff
07-13 14:42:15.142 6173 6173 I DEBUG : 416238f4 4108ee80
/system/lib/libasound.so
07-13 14:42:15.142 6173 6173 I DEBUG : 416238f8 41623928
07-13 14:42:15.142 6173 6173 I DEBUG : 416238fc ffffffff
07-13 14:42:15.142 6173 6173 I DEBUG : 41623900 41623928
07-13 14:42:15.142 6173 6173 I DEBUG : 41623904 b0005817
/system/bin/linker
07-13 14:42:15.142 6173 6173 I DEBUG : 41623908 ffffffff
07-13 14:42:15.142 6173 6173 I DEBUG : 4162390c 41623928
07-13 14:42:15.142 6173 6173 I DEBUG : 41623910 410e19e4
/system/lib/libasound.so
07-13 14:42:15.142 6173 6173 I DEBUG : 41623914 ffffff84
Thanks,
Kuldeep
-------------- next part --------------
160 595 D AudioHardwareMot: AudioStreamOutMot::getParameters() Fm-radio=
160 595 I MotUsbCameraHal: startRecording
160 327 D AudioHardwareALSA: openOutputStream called for devices: 0x00000002
160 327 D ALSA-LIB: open called for devices 00000002 in mode 0...
160 327 D : snd_config_update 3746
160 327 D : snd_config_update_r 3594
160 327 D : snd_config_update_r 3615
160 327 D : snd_config_update_r 3625
160 327 D : snd_config_update_r 3639
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw:00
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4645
160 327 D : snd_config_expand 4647
160 327 D : snd_config_expand 4650
160 327 D : snd_config_expand 4656
160 327 D : snd_config_search_definition 4750
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 hw
160 327 D ALSA-LIB: handle 0x6c55a0 device Name default
160 327 D : snd_pcm_open 2242 default DHP764
160 327 D : snd_config_update 3746
160 327 D : snd_config_update_r 3594
160 327 D : snd_config_update_r 3615
160 327 D : snd_config_update_r 3625
160 327 D : snd_config_update_r 3639
160 327 D : snd_pcm_open 2244
160 327 D : snd_pcm_open 2247
160 327 D : snd_pcm_open_noupdate 2209 default
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 default
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4645
160 327 D : snd_config_expand 4647
160 327 D : snd_config_expand 4650
160 327 D : snd_config_expand 4656
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 getenv
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 getenv
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 refer
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 refer
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 defaults.pcm.card
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4640
160 327 D : snd_config_search_definition 4750
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 refer
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 refer
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 concat
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 concat
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 card_driver
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 card_driver
160 327 D : snd_config_update 3746
160 327 D : snd_config_update_r 3594
160 327 D : snd_config_update_r 3615
160 327 D : snd_config_update_r 3625
160 327 D : snd_config_update_r 3639
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw:0
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4645
160 327 D : snd_config_expand 4647
160 327 D : snd_config_expand 4650
160 327 D : snd_config_expand 4656
160 327 D : snd_config_search_definition 4750
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 hw
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 cards..pcm.default:CARD=0
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 cards..pcm.default:CARD=0
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 refer
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 refer
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 defaults.pcm.dmix.device
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4640
160 327 D : snd_config_search_definition 4750
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 refer
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 refer
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 defaults.pcm.dsnoop.device
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4640
160 327 D : snd_config_search_definition 4750
160 327 D : snd_config_search_definition 4750
160 327 D : snd_pcm_open_noupdate 2216
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 empty
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 empty
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 plug
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 plug
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 hw
160 327 D : snd_pcm_open_noupdate 2224
160 327 D ALSA-LIB: handle 0x6c55a0 device Name default
-------------- next part --------------
160 327 D AudioHardwareALSA: openOutputStream called for devices: 0x00000002
160 327 D ALSA-LIB: open called for devices 00000002 in mode 0...
160 327 D : snd_config_update 3746
160 327 D : snd_config_update_r 3594
160 327 D : snd_config_update_r 3615
160 327 D : snd_config_update_r 3625
160 327 D : snd_config_update_r 3639
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw:00
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4645
160 327 D : snd_config_expand 4647
160 327 D : snd_config_expand 4650
160 327 D : snd_config_expand 4656
160 327 D : snd_config_search_definition 4750
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 hw
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 hw
160 327 D ALSA-LIB: handle 0x6c55a0 device Name default
160 327 D : snd_pcm_open 2242 default DHP764
160 327 D : snd_config_update 3746
160 327 D : snd_config_update_r 3594
160 327 D : snd_config_update_r 3615
160 327 D : snd_config_update_r 3625
160 327 D : snd_config_update_r 3639
160 327 D : snd_pcm_open 2244
160 327 D : snd_pcm_open 2247
160 327 D : snd_pcm_open_noupdate 2209 default
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 default
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4748
160 327 D : snd_config_expand 4633
160 327 D : snd_config_expand 4645
160 327 D : snd_config_expand 4647
160 327 D : snd_config_expand 4650
160 327 D : snd_config_expand 4656
160 327 D : snd_config_search_definition 4724
160 327 D : snd_config_search_definition 4733 0 getenv
160 327 D : snd_config_search_definition 4738
160 327 D : snd1_config_search_alias_hooks 3193
160 327 D : snd_config_search_definition 4741
160 327 D : snd_config_search_definition 4743
160 327 D : snd_config_search_definition 4745 -2 getenv
160 327 F libc : Fatal signal 11 (SIGSEGV) at 0x00008140 (code=1)
720 2720 I DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
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