播放声音时，我在嵌入式Linux平台上获得了核心转储。 我使用QT进行GUI，调用堆栈是：
Program terminated with signal 11, Segmentation fault.
#0 0x411740e4 in dlopen () from /lib/libdl.so.0
(gdb) bt
#0 0x411740e4 in dlopen () from /lib/libdl.so.0
#1 0x40194a04 in snd_dlopen () from /nand/usr/lib/libasound.so.2
#2 0x40190cc8 in ?? () from /nand/usr/lib/libasound.so.2
(gdb) thread apply all bt
Thread 7 (process 511):
#0 0x405e15c8 in ?? () from /nand/usr/lib/libQtGui.so.4
Cannot access memory at address 0x2
Thread 6 (process 538):
#0 0x410dda1c in read () from /lib/libc.so.0
#1 0x40fdbe14 in read () from /lib/libpthread.so.0
#2 0x4014b924 in SysUtil_GetALSEventValue () at ALSPSensor.cpp:46
#3 0x00040af0 in ALSensor::operateBackLight (this=<value optimized out>) at src/PALSSensorHandle.cpp:97
#4 0x00040c04 in ALSensor::run (this=0x12a218) at src/PALSSensorHandle.cpp:76
#5 0x40d4d4f8 in ?? () from /nand/usr/lib/libQtCore.so.4
Thread 5 (process 537):
#0 0x410dda1c in read () from /lib/libc.so.0
#1 0x40fdbe14 in read () from /lib/libpthread.so.0
#2 0x4014b5fc in SysUtil_GetPSEventValue () at ALSPSensor.cpp:163
#3 0x00040c54 in PSensor::operateBackLight (this=<value optimized out>) at src/PALSSensorHandle.cpp:83
#4 0x00040d20 in PSensor::run (this=0x11ecf8) at src/PALSSensorHandle.cpp:66
#5 0x40d4d4f8 in ?? () from /nand/usr/lib/libQtCore.so.4
Thread 4 (process 536):
#0 0x4117e730 in mq_receive () from /lib/librt.so.0
#1 0x40219fa4 in BidirctMsgQueue::get (this=0x130ba8, msg_len=0xbe5ffd3c) at BidirctMsgQueue.cpp:56
#2 0x0003fb0c in MqReceiver::run (this=0x12b270) at src/MqReceiver.cpp:45
#3 0x40d4d4f8 in ?? () from /nand/usr/lib/libQtCore.so.4
Thread 3 (process 535):
#0 0x410ddfd8 in select () from /lib/libc.so.0
#1 0x4009897c in ipc_block_recv (sock=27, recv_message=0xbe7ffc90) at ipc.cpp:123
#2 0x40022c74 in CSipMsgControl::InitSipMsg (this=0x145ea8) at sipmsgcontrol.cpp:170
#3 0x40022cb8 in CSipMsgControl::run (this=0xfffffdfe) at sipmsgcontrol.cpp:119
#4 0x40d4d4f8 in ?? () from /nand/usr/lib/libQtCore.so.4
Thread 2 (process 534):
#0 0x410dd5ac in poll () from /lib/libc.so.0
#1 0x40fd87d4 in __pthread_manager () from /lib/libpthread.so.0
Backtrace stopped: frame did not save the PC
Thread 1 (process 1416):
#0 0x411740e4 in dlopen () from /lib/libdl.so.0
#1 0x40194a04 in snd_dlopen () from /nand/usr/lib/libasound.so.2
#2 0x40190cc8 in ?? () from /nand/usr/lib/libasound.so.2
(gdb)