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  4. error : QProcessPrivate::createPipe: Cannot create pipe 0x2ed031ac: Too many open files
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error : QProcessPrivate::createPipe: Cannot create pipe 0x2ed031ac: Too many open files

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qtcreator
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  • S Offline
    S Offline
    sachin786
    wrote on last edited by sachin786
    #14
    **before application running output=>**
    [root@Atishay root]# lsof
    1	/bin/busybox	/dev/console
    1	/bin/busybox	/dev/console
    1	/bin/busybox	/dev/console
    1498	/sbin/udevd	/dev/null
    1498	/sbin/udevd	/dev/null
    1498	/sbin/udevd	/dev/null
    1498	/sbin/udevd	anon_inode:inotify
    1498	/sbin/udevd	socket:[1525]
    1498	/sbin/udevd	socket:[1526]
    1498	/sbin/udevd	pipe:[1527]
    1498	/sbin/udevd	pipe:[1527]
    2653	/usr/sbin/inetd	/dev/null
    2653	/usr/sbin/inetd	/dev/null
    2653	/usr/sbin/inetd	/dev/null
    2653	/usr/sbin/inetd	socket:[2860]
    2653	/usr/sbin/inetd	socket:[2861]
    2653	/usr/sbin/inetd	socket:[2862]
    2653	/usr/sbin/inetd	socket:[2863]
    2653	/usr/sbin/inetd	socket:[2864]
    2653	/usr/sbin/inetd	socket:[2865]
    2653	/usr/sbin/inetd	socket:[2866]
    2656	/usr/sbin/boa	/dev/null
    2656	/usr/sbin/boa	/var/log/boa/access_log
    2656	/usr/sbin/boa	/var/log/boa/error_log
    2656	/usr/sbin/boa	socket:[3527]
    2750	/bin/bash	/dev/console
    2750	/bin/bash	/dev/console
    2750	/bin/bash	/dev/console
    2750	/bin/bash	/etc/rc.d/rc_mxc.S
    2753	/bin/bash	/dev/ttymxc0
    2753	/bin/bash	/dev/ttymxc0
    2753	/bin/bash	/dev/ttymxc0
    2753	/bin/bash	/dev/ttymxc0
    
    
    **after application running output=>**
    
    1	/bin/busybox	/dev/console
    1	/bin/busybox	/dev/console
    1	/bin/busybox	/dev/console
    1498	/sbin/udevd	/dev/null
    1498	/sbin/udevd	/dev/null
    1498	/sbin/udevd	/dev/null
    1498	/sbin/udevd	anon_inode:inotify
    1498	/sbin/udevd	socket:[1525]
    1498	/sbin/udevd	socket:[1526]
    1498	/sbin/udevd	pipe:[1527]
    1498	/sbin/udevd	pipe:[1527]
    2653	/usr/sbin/inetd	/dev/null
    2653	/usr/sbin/inetd	/dev/null
    2653	/usr/sbin/inetd	/dev/null
    2653	/usr/sbin/inetd	socket:[2860]
    2653	/usr/sbin/inetd	socket:[2861]
    2653	/usr/sbin/inetd	socket:[2862]
    2653	/usr/sbin/inetd	socket:[2863]
    2653	/usr/sbin/inetd	socket:[2864]
    2653	/usr/sbin/inetd	socket:[2865]
    2653	/usr/sbin/inetd	socket:[2866]
    2656	/usr/sbin/boa	/dev/null
    2656	/usr/sbin/boa	/var/log/boa/access_log
    2656	/usr/sbin/boa	/var/log/boa/error_log
    2656	/usr/sbin/boa	socket:[3527]
    2750	/bin/bash	/dev/console
    2750	/bin/bash	/dev/console
    2750	/bin/bash	/dev/console
    2750	/bin/bash	/etc/rc.d/rc_mxc.S
    2753	/bin/bash	/dev/ttymxc0
    2753	/bin/bash	/dev/ttymxc0
    2753	/bin/bash	/dev/ttymxc0
    2753	/bin/bash	/dev/ttymxc0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[9913]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[9913]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[9915]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[9915]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	socket:[9916]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/fb0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/tty0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/input/mouse0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/input/event1
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/tty0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	socket:[9918]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/tmp/qtembedded-0/fonts/dejavu_sans_20_50.qsf
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/tmp/qtembedded-0/fonts/dejavu_sans_40_50.qsf
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[12299]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[12299]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[11299]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[11299]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[10579]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[10579]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/spidev0.0
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[12300]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	pipe:[12300]
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/tmp/qtembedded-0/fonts/dejavu_sans_14_50.qsf
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/tmp/qtembedded-0/fonts/dejavu_sans_15_75.qsf
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    5604	/usr/test/build-QT_FP_RFID-QT_4_8_6-Debug/QT_FP_RFID	/dev/ttymxc2
    
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    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #15

      Is it me or does your application open /dev/ttymxc2 very often ?

      How do you open that device file ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      S 1 Reply Last reply
      1
      • SGaistS SGaist

        Is it me or does your application open /dev/ttymxc2 very often ?

        How do you open that device file ?

        S Offline
        S Offline
        sachin786
        wrote on last edited by
        #16
        No, in my application i called following function multiple time.
        fpSetup();//  /dev/ttymxc2 open oftenly
        
        /******************************************** fpSetup Starts***************************************************
        //Description     : Setting Up UART peripheral
        //Input Parameter : void
        //Return Type     : void
        ************************************************************************************************************/
        void fpSetup(void)
        {
            //printf("\nSetting Up Fingerprint module...\n");
            N=12;
            SERIAL_ATTR_ST serial_attr;
            int ret;
            int channel;
            channel=2;				// UART channel select as per need.. anas
            fp=UART4_Port_RDWR(channel);		// open UART port.
            ret=UART4_Attr_set(fp,serial_attr);
            if (RET_SUCCESS == ret)
            {
                //printf("\nBaud Rate Set Successful.\n");
            }
        
        }
        
        
        
        /************************************************************************************************************
        File: serial_test.h (contains all function declaration and definations for interfacing and enabling serial interface )
        Author   : RnD Team @ Atishay Infotech
        Date     : 18th Jan 2016,Monday,10:57AM
        Platform : IMX6 board(Cortex A9) + Linux-3.0.35
        Toolchain: arm-fsl-linux-gnueabi-gcc-4.6.2
        *************************************************************************************************************/
        #include <stdio.h>
        #include <sys/types.h>
        #include <sys/stat.h>
        #include <fcntl.h>
        #include <unistd.h>
        #include <string.h>
        #include <termios.h>
        #include <errno.h>
        #include <sys/ioctl.h>
        #include <pthread.h>
        #define BUF_SIZE		512
        /* *************************** variables ******************************/
        	char read_buf[BUF_SIZE];
        	unsigned char N;
        	//char confirmation_data[BUFFER];
        /* *************************** Structures ******************************/
        
        typedef struct {
            char parity;
        	unsigned int baud;
            unsigned int databits;
            unsigned int stopbits;
        } SERIAL_ATTR_ST;
        
        /************ Functions **********************/
        static int attr_baud_set(int,unsigned int);
        static void *datas_read(void*);
        //char rs232_read();
        int rs232_transfer(int fd, unsigned char data[], int buf_size);
        //static int RS232_test(int);
        void thread_DataRead(int);
        int UART4_Attr_set(int fd,SERIAL_ATTR_ST serial_attr);
        int UART4_Port_RDWR(int);
        //static int RS485_test(int)
        
        
        typedef struct {
            unsigned int lable;
            unsigned int baudrate;
        } SERIAL_BAUD_ST;
        
        typedef struct{
            unsigned int flags;
            unsigned int delay_rts_after_send;	/* delay after send (milliseconds) */
        }SERIAL_RS485_CONF_ST;
        
        
        
        #define DEBUG 1
        
        #ifdef DEBUG
          #define DEBUG_INFO(fmt, args...)  fprintf(stderr, fmt, ##args)
          #define DEBUG_ERROR(fmt, args...) fprintf(stderr, fmt"%s\t%s\t%d\n", ##args, __FILE__,__FUNCTION__,__LINE__)
        #else
          #define DEBUG_INFO(fmt, args...)
          #define DEBUG_ERROR(fmt, args...)
        #endif
        
        #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
        
        #define TIMEOUT                     1  /* read operation timeout 1s = TIMEOUT/10 */
        #define MIN_LEN                     128  /* the min len datas */
        #define DEV_NAME_LEN                32
        #define SERIAL_ATTR_BAUD            9600*N
        #define SERIAL_ATTR_DATABITS        8
        #define SERIAL_ATTR_STOPBITS        1
        #define SERIAL_ATTR_PARITY          'n'
        #define SERIAL_MODE_NORMAL          0
        #define SERIAL_MODE_485             1
        #define DELAY_RTS_AFTER_SEND        1   /* 1ms */
        #define SER_RS485_ENABLED		    1	/* 485 enable */
        #define RET_SUCCESS                 		0
        #define RET_FAILED                  		-1
        
        
        static SERIAL_BAUD_ST g_attr_baud[] = {
            {230400, B230400}, {115200, B115200},
            {57600, B57600}, {38400, B38400},
            {19200, B19200}, {9600, B9600},
            {4800, B4800},  {2400, B2400},
            {1800, B1800}, {1200, B1200},
        };
        
        static char g_dev_serial[][DEV_NAME_LEN] = {
                "/dev/ttymxc0",
                "/dev/ttymxc1",
                "/dev/ttymxc2",
                "/dev/ttymxc3",
                "/dev/ttymxc4",
        };
        
        static int attr_baud_set(int fd, unsigned int baud)
        {
            unsigned int i=0;
            int ret = RET_SUCCESS;
            struct termios option;
        
            /* get old serial attribute */
            memset(&option, 0, sizeof(option));
            if (RET_SUCCESS != tcgetattr(fd, &option))
            {
                DEBUG_ERROR("tcgetattr failed.\n");
                return RET_FAILED;
            }
        
            for (i=0;i<ARRAY_SIZE(g_attr_baud);i++)
            {
                if (baud == g_attr_baud[i].lable)
                {
                    ret = tcflush(fd, TCIOFLUSH);
                    if (RET_SUCCESS != ret)
                    {
                     //   DEBUG_ERROR("tcflush failed.\n");
                        break;
                    }
        
                    ret = cfsetispeed(&option, g_attr_baud[i].baudrate);
                    if (RET_SUCCESS != ret)
                    {
                     //   DEBUG_ERROR("cfsetispeed failed.\n");
                        ret = RET_FAILED;
                        break;
                    }
        
                    ret = cfsetospeed(&option, g_attr_baud[i].baudrate);
                    if (RET_SUCCESS != ret)
                    {
                        //DEBUG_ERROR("cfsetospeed failed.\n");
                        ret = RET_FAILED;
                        break;
                    }
        
                    ret = tcsetattr(fd, TCSANOW, &option);
                    if  (RET_SUCCESS != ret)
                    {
                      //  DEBUG_ERROR("tcsetattr failed.\n");
                        ret = RET_FAILED;
                        break;
                    }
        
                    ret = tcflush(fd, TCIOFLUSH);
                    if (RET_SUCCESS != ret)
                    {
                    //    DEBUG_ERROR("tcflush failed.\n");
                        break;
                    }
                }
            }
        
            return ret;
        }
        
        static int attr_other_set(int fd, SERIAL_ATTR_ST *serial_attr)
        {
            struct termios option;
        
            /* get old serial attribute */
            memset(&option, 0, sizeof(option));
            if (RET_SUCCESS != tcgetattr(fd, &option))
            {
                DEBUG_ERROR("tcgetattr failed.\n");
                return RET_FAILED;
            }
        
            option.c_iflag = CLOCAL | CREAD;
        
            /* set datas size */
            option.c_cflag &= ~CSIZE;
            option.c_iflag = 0;
        
            switch (serial_attr->databits)
            {
                case 7:
                    option.c_cflag |= CS7;
                    break;
        
                case 8:
                    option.c_cflag |= CS8;
                    break;
        
                default:
                    DEBUG_ERROR("invalid argument, unsupport datas size.\n");
                    return RET_FAILED;
            }
        
            /* set parity */
            switch (serial_attr->parity)
            {
                case 'n':
                case 'N':
                    option.c_cflag &= ~PARENB;
                    option.c_iflag &= ~INPCK;
                    break;
        
                case 'o':
                case 'O':
                    option.c_cflag |= (PARODD | PARENB);
                    option.c_iflag |= INPCK;
                    break;
        
                case 'e':
                case 'E':
                    option.c_cflag |= PARENB;
                    option.c_cflag &= ~PARODD;
                    option.c_iflag |= INPCK;
                    break;
        
                case 's':
                case 'S':
                    option.c_cflag &= ~PARENB;
                    option.c_cflag &= ~CSTOPB;
                    break;
        
                default:
                    DEBUG_ERROR("invalid argument, unsupport parity type.\n");
                    return RET_FAILED;
            }
        
            /* set stop bits  */
            switch (serial_attr->stopbits)
            {
                case 1:
                    option.c_cflag &= ~CSTOPB;
                    break;
        
                case 2:
                    option.c_cflag |= CSTOPB;
                    break;
        
                default:
                    DEBUG_ERROR("invalid argument, unsupport stop bits.\n");
                    return RET_FAILED;
            }
        
            option.c_oflag = 0;
            option.c_lflag = 0;
            option.c_cc[VTIME] = TIMEOUT;
            option.c_cc[VMIN] = MIN_LEN;
        
            if (RET_SUCCESS != tcflush(fd,TCIFLUSH))
            {
                DEBUG_ERROR("tcflush failed.\n");
                return RET_FAILED;
            }
        
            if (RET_SUCCESS != tcsetattr(fd, TCSANOW, &option))
            {
                DEBUG_ERROR("tcsetattr failed.\n");
                return RET_FAILED;
            }
        
        #if 0
            tcgetattr(fd, &option);
            DEBUG_INFO("c_iflag: %x\rc_oflag: %x\n", option.c_iflag, option.c_oflag);
            DEBUG_INFO("c_cflag: %x\nc_lflag: %x\n", option.c_cflag, option.c_lflag);
            DEBUG_INFO("c_line: %x\nc_cc[VTIME]: %d\nc_cc[VMIN]: %d\n", option.c_line, option.c_cc[VTIME], option.c_cc[VMIN]);
        #endif
        
            return RET_SUCCESS;
        }
        
        static int attr_set(int fd, SERIAL_ATTR_ST *serial_attr)
        {
            int ret = RET_SUCCESS;
        
            if (NULL == serial_attr)
            {
                DEBUG_ERROR("invalid argument.\n");
                return RET_FAILED;
            }
        
            if (RET_SUCCESS == ret)
            {
                ret = attr_baud_set(fd, serial_attr->baud);
                if (RET_SUCCESS == ret)
                {
                    ret = attr_other_set(fd, serial_attr);
                }
            }
        
            return ret;
        }
        
        
        static void *datas_read(void *arg)
        {
            int ret=0,i=0,n_data=0;
            int fd = *(int *)arg;
             printf("Reading the data...\n");
        
                memset(read_buf, 0, sizeof(read_buf));
            for(i=0;i<9;i++)
            {
                    ret= read(fd, (read_buf+i), sizeof(char));
                    if(ret){ n_data++; }
        
            }
        
            DEBUG_INFO("receive %d datas: %s\n", n_data, read_buf);
        
        }
        
        void thread_DataRead(int fd)
        {
            int ret = RET_SUCCESS;
            pthread_t pid;
            printf("Creating the Thread for Reading the Data.\n");
            ret = pthread_create(&pid, NULL, datas_read, (void *)&fd);
            if (RET_SUCCESS != ret)
            {
                DEBUG_ERROR("can't create thread:%s\n",(char*) strerror);
            }
            else
            printf("Thread created for reading the data.\n");
        
            pthread_cancel(pid);
        }
        
        
        
        int rs232_transfer(int fd,unsigned char data[],int buf_size)
        {
            unsigned char i;
            int n_data=0;
            int ret = RET_SUCCESS;
            //printf("Writing the data to R305...\n");
        
            for(i=0;i<(buf_size+1);i++)
            {
                    ret = write(fd, (data+i) , sizeof(char));
                //printf("Data Sent:%x\n",data[i]);
                n_data++;
            }
        
                if ((buf_size+1) != n_data)
                    {
                        printf("Data Write Failed\n");
                            ret = RET_FAILED;
        
                    }
                else
                //printf("Done.\n");
                    sleep(1);
        
            return ret;
        }
        
        
        int UART4_Attr_set(int fd,SERIAL_ATTR_ST serial_attr)
        {
             int ret;
            //SERIAL_ATTR_ST serial_attr;
            //printf("Setting Up the Attributes.\n");
        
            memset(&serial_attr, 0, sizeof(serial_attr));
            serial_attr.baud = SERIAL_ATTR_BAUD;
            serial_attr.databits = SERIAL_ATTR_DATABITS;
            serial_attr.stopbits = SERIAL_ATTR_STOPBITS;
            serial_attr.parity = SERIAL_ATTR_PARITY;
        
            ret = attr_set(fd, &serial_attr);
            return ret;
        }
        
        int UART4_Port_RDWR(int channel)
        {
            int fd;
            //int bufsize;
            //char write_buf[BUF_SIZE];
        
            //DEBUG_INFO("QY-IMX6S-V1.2 RS232 Com channe ss%d \n Start Testing ...\n", channel);
            fd = open(g_dev_serial[channel], O_RDWR);
            if (fd < 0)
            {
                DEBUG_ERROR("open serial device %s error!\n", g_dev_serial[channel]);
                return RET_FAILED;
            }
        
            /*memset(write_buf,0,sizeof(write_buf));
            snprintf(write_buf, sizeof(write_buf), "Com%d RS232 test string!\n", channel);
            bufsize = strlen(write_buf) + 1;
        
            serial_rs232_test(fd, write_buf, bufsize);*/
        
            return fd;
        }
        
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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #17

          Why not use QSerialPort ?

          In any case, I don't see any call to close the file descriptor after use.

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

          S 1 Reply Last reply
          0
          • SGaistS SGaist

            Why not use QSerialPort ?

            In any case, I don't see any call to close the file descriptor after use.

            S Offline
            S Offline
            sachin786
            wrote on last edited by
            #18

            @SGaist ok i will check that file and get back to u...and i am using QT creator 4.8.5 and in that there is no proper documentation for Qserialport thats why i am using normal serial port terminal available in ubuntu 12.04.

            1 Reply Last reply
            0
            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #19

              You'll have to build the module yourself (there's a Qt 4 dedicated branch) but otherwise. The documentation is the same.

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

              S 1 Reply Last reply
              0
              • SGaistS SGaist

                You'll have to build the module yourself (there's a Qt 4 dedicated branch) but otherwise. The documentation is the same.

                S Offline
                S Offline
                sachin786
                wrote on last edited by
                #20

                @SGaist :: as far now problem is get fixed and my application running fine. as you help me to point out i am not closing file descriptor, i fix this by simply closing file descriptor and keeping track that no device peripheral left open more than once, at the moment i am using with regular serial port communication, thanx for all your suggestion it really help me alot.
                once i finish this application surely i will try to work with QSerialPort :) Thank you once again and have great day ☺

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                • S Offline
                  S Offline
                  sachin786
                  wrote on last edited by
                  #21

                  hello @SGaist ...following issue is occured while running the application and by this the finger print module get off

                  Unable to handle kernel NULL pointer dereference at virtual address 000000d4
                  pgd = 80004000
                  [000000d4] *pgd=00000000
                  Internal error: Oops: 17 [#1] PREEMPT SMP
                  Modules linked in:
                  CPU: 2    Not tainted  (3.0.35-2666-gbdde708 #26)
                  PC is at bus_freq_update+0x80/0x1d0
                  LR is at bus_freq_update+0x14/0x1d0
                  pc : [<8007129c>]    lr : [<80071230>]    psr: 60000013
                  sp : bfd43e80  ip : 00000001  fp : 0011edd8
                  r10: 00000000  r9 : 0011edd8  r8 : 80af7a54
                  r7 : 000e7ef0  r6 : 000000bc  r5 : 00000000  r4 : 80aaf958
                  r3 : ba1e0ae0  r2 : bfd43e78  r1 : 00000000  r0 : 80aabbfc
                  Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
                  Control: 10c53c7d  Table: 4faf404a  DAC: 00000015
                  Process kworker/2:1 (pid: 1386, stack limit = 0xbfd422f0)
                  Stack: (0xbfd43e80 to 0xbfd44000)
                  3e80: 80af778c 3b5dc100 001312d0 8008657c 001312d0 001312d0 80af7788 80af77783ea0: 80af7a54 bf9ff240 80af7a54 00000004 00000004 80aa7ac4 179a7b00 bfd43ee4
                  3ec0: 80537fdc 800868bc bfd43f04 800b4dc4 8c018f40 00000000 bfd43f8c 80533958
                  3ee0: 00000000 00000003 000f32a0 00060ae0 ffffff01 00000000 00000000 00000000
                  3f00: 00000000 00000002 8005af40 80aa7abc 80aa7abc 00000000 80aa7b00 80aa7cc0
                  3f20: 8005ad90 8c008d90 8005ad90 8039e698 00060ae0 803a2eac 00000001 bfa03e00
                  3f40: 8c0182e0 8c01e800 bfd42000 00000000 8c01e805 803a2d90 80b18474 800aab34
                  3f60: bfa03e10 00000001 bfa03e10 bfa03e00 8c0182e0 8c0182e8 bfa03e10 bfd42000
                  3f80: 8005b400 8005b400 00000009 800ab36c 00000013 00000000 8005b400 8005b400
                  3fa0: bfd43fc4 bffb1f00 bfa03e00 800ab1fc 00000013 00000000 00000000 00000000
                  3fc0: 00000000 800af80c 80062aa4 00000000 bfa03e00 00000000 00000000 00000000
                  3fe0: bfd43fe0 bfd43fe0 bffb1f00 800af78c 80062aa4 80062aa4 00000000 00000000
                  [<8007129c>] (bus_freq_update+0x80/0x1d0) from [<8008657c>] (set_cpu_freq+0x1b8/0x3a0)
                  [<8008657c>] (set_cpu_freq+0x1b8/0x3a0) from [<800868bc>] (mxc_set_target+0x10c/0x2bc)
                  [<800868bc>] (mxc_set_target+0x10c/0x2bc) from [<8039e698>] (__cpufreq_driver_target+0x50/0x64)
                  [<8039e698>] (__cpufreq_driver_target+0x50/0x64) from [<803a2eac>] (cpufreq_interactive_freq_down+0x11c/0x14c)
                  [<803a2eac>] (cpufreq_interactive_freq_down+0x11c/0x14c) from [<800aab34>] (process_one_work+0x10c/0x38c)
                  [<800aab34>] (process_one_work+0x10c/0x38c) from [<800ab36c>] (worker_thread+0x170/0x37c)
                  [<800ab36c>] (worker_thread+0x170/0x37c) from [<800af80c>] (kthread+0x80/0x88)
                  [<800af80c>] (kthread+0x80/0x88) from [<80062aa4>] (kernel_thread_exit+0x0/0x8)
                  Code: 0a00000d ebfffea0 ea00000b e5df6148 (e5963018) 
                  ---[ end trace 8c5e7d506d5614d2 ]---
                  Unable to handle kernel paging request at virtual address fffffffc
                  pgd = 80004000
                  [fffffffc] *pgd=4fffe821, *pte=00000000, *ppte=00000000
                  Internal error: Oops: 17 [#2] PREEMPT SMP
                  Modules linked in:
                  CPU: 2    Tainted: G      D      (3.0.35-2666-gbdde708 #26)
                  PC is at kthread_data+0x4/0xc
                  LR is at wq_worker_sleeping+0xc/0xec
                  pc : [<800af9cc>]    lr : [<800abeec>]    psr: 00000193
                  sp : bfd43b98  ip : 8c018f90  fp : bfd43c4c
                  r10: ba1e0bfc  r9 : ba1e0bfc  r8 : ba1e0c78
                  r7 : 00000002  r6 : bfd42000  r5 : ba1e0ae0  r4 : 00000002
                  r3 : 00000000  r2 : 00000000  r1 : 00000002  r0 : ba1e0ae0
                  Flags: nzcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
                  Control: 10c53c7d  Table: 4faf404a  DAC: 00000015
                  Process kworker/2:1 (pid: 1386, stack limit = 0xbfd422f0)
                  Stack: (0xbfd43b98 to 0xbfd44000)
                  3b80:                                                       8c018f40 80533a6c
                  3ba0: 809d8c68 80126fe4 bfd43bcf 00000001 bfa03ed0 bffc31e0 0000056a 8015754c
                  3bc0: 00000000 00000000 8005af40 8005af40 8005a1b4 8005af40 c01dfaab 00000000
                  3be0: c01dfaab 800980f8 ba230000 ba1e0ae0 bfc08000 ba230504 80af8298 ba230000
                  3c00: 00000000 8005a260 ba1e0ae0 8009810c ba1e0ae0 8005a260 8007129e 800da9d4
                  3c20: 00000000 00000000 bfd43c28 ba1e0ae0 ffffffff ba1e0ad8 bff8c000 ba1e0bfc
                  3c40: ba1e0bfc ba1e0bfc 809d1bc8 80099390 00000000 bfd43c64 bfd42000 00000001
                  3c60: 80abd4bc bfd43c64 bfd43c64 ba1e0c44 8007129e bfd42000 00000000 00000001
                  3c80: 8007129e 00000000 800712a0 bfd43cda 809d1bc8 80065740 bfd422f0 0000000b
                  3ca0: 00000008 00000000 30000001 30303061 20643030 66666265 30616566 30616520
                  3cc0: 30303030 35652062 31366664 28203834 36393565 38313033 00002029 00000000
                  3ce0: 0011edd8 00000000 000000d4 00000017 bfd43e38 ba1e0ae0 00000017 00000000
                  3d00: 0011edd8 8052f84c bfd43e38 8006c488 00000000 00000001 00000200 bfd43de4
                  3d20: 00591ec2 00000001 00000000 00000000 80a94080 80aa7aa0 bfd43dc4 80090764
                  3d40: 8c01825c bfd43de4 00000001 00000000 00000002 bfd42000 bfd43de4 8005af40
                  3d60: 00000000 8005af40 00000000 8008fe20 00000000 00000017 80aab428 000000d4
                  3d80: bfd43e38 80af7a54 20000113 00000000 0011edd8 8005c384 bffd1780 ffffffff
                  3da0: 8005af40 00000000 00000000 bffc1900 00000000 8005af40 00000000 00000000
                  3dc0: 001cbcc5 00000000 bffc1900 00000000 00000fff 00000000 00000000 00000000
                  3de0: 00000000 00000001 00000000 00000000 00000000 00000000 00000000 00000000
                  3e00: 00000000 00000000 00000000 bfe4fe00 00000000 bfe4fe00 00000040 800b4ef0
                  3e20: 00000000 0000040f 00000007 000000bc 000e7ef0 80061990 80aabbfc 00000000
                  3e40: bfd43e78 ba1e0ae0 80aaf958 00000000 000000bc 000e7ef0 80af7a54 0011edd8
                  3e60: 00000000 0011edd8 00000001 bfd43e80 80071230 8007129c 60000013 ffffffff
                  3e80: 80af778c 3b5dc100 001312d0 8008657c 001312d0 001312d0 80af7788 80af7778
                  3ea0: 80af7a54 bf9ff240 80af7a54 00000004 00000004 80aa7ac4 179a7b00 bfd43ee4
                  3ec0: 80537fdc 800868bc bfd43f04 800b4dc4 8c018f40 00000000 bfd43f8c 80533958
                  3ee0: 00000000 00000003 000f32a0 00060ae0 ffffff01 00000000 00000000 00000000
                  3f00: 00000000 00000002 8005af40 80aa7abc 80aa7abc 00000000 80aa7b00 80aa7cc0
                  3f20: 8005ad90 8c008d90 8005ad90 8039e698 00060ae0 803a2eac 00000001 bfa03e00
                  3f40: 8c0182e0 8c01e800 bfd42000 00000000 8c01e805 803a2d90 80b18474 800aab34
                  3f60: bfa03e10 00000001 bfa03e10 bfa03e00 8c0182e0 8c0182e8 bfa03e10 bfd42000
                  3f80: 8005b400 8005b400 00000009 800ab36c 00000013 00000000 8005b400 8005b400
                  3fa0: bfd43fc4 bffb1f00 bfa03e00 800ab1fc 00000013 00000000 00000000 00000000
                  3fc0: 00000000 800af80c 80062aa4 00000000 bfa03e00 00000001 00000000 00000000
                  3fe0: bfd43fe0 bfd43fe0 bffb1f00 800af78c 80062aa4 80062aa4 00000000 00000000
                  [<800af9cc>] (kthread_data+0x4/0xc) from [<800abeec>] (wq_worker_sleeping+0xc/0xec)
                  [<800abeec>] (wq_worker_sleeping+0xc/0xec) from [<80533a6c>] (__schedule+0x390/0x6c0)
                  [<80533a6c>] (__schedule+0x390/0x6c0) from [<80099390>] (do_exit+0x450/0x6e8)
                  [<80099390>] (do_exit+0x450/0x6e8) from [<80065740>] (die+0x228/0x284)
                  [<80065740>] (die+0x228/0x284) from [<8052f84c>] (__do_kernel_fault.part.4+0x54/0x74)
                  [<8052f84c>] (__do_kernel_fault.part.4+0x54/0x74) from [<8006c488>] (do_page_fault+0x2b4/0x31c)
                  [<8006c488>] (do_page_fault+0x2b4/0x31c) from [<8005c384>] (do_DataAbort+0x34/0x9c)
                  [<8005c384>] (do_DataAbort+0x34/0x9c) from [<80061990>] (__dabt_svc+0x70/0xa0)
                  Exception stack(0xbfd43e38 to 0xbfd43e80)
                  3e20:                                                       80aabbfc 00000000
                  3e40: bfd43e78 ba1e0ae0 80aaf958 00000000 000000bc 000e7ef0 80af7a54 0011edd8
                  3e60: 00000000 0011edd8 00000001 bfd43e80 80071230 8007129c 60000013 ffffffff
                  [<80061990>] (__dabt_svc+0x70/0xa0) from [<8007129c>] (bus_freq_update+0x80/0x1d0)
                  [<8007129c>] (bus_freq_update+0x80/0x1d0) from [<8008657c>] (set_cpu_freq+0x1b8/0x3a0)
                  [<8008657c>] (set_cpu_freq+0x1b8/0x3a0) from [<800868bc>] (mxc_set_target+0x10c/0x2bc)
                  [<800868bc>] (mxc_set_target+0x10c/0x2bc) from [<8039e698>] (__cpufreq_driver_target+0x50/0x64)
                  [<8039e698>] (__cpufreq_driver_target+0x50/0x64) from [<803a2eac>] (cpufreq_interactive_freq_down+0x11c/0x14c)
                  [<803a2eac>] (cpufreq_interactive_freq_down+0x11c/0x14c) from [<800aab34>] (process_one_work+0x10c/0x38c)
                  [<800aab34>] (process_one_work+0x10c/0x38c) from [<800ab36c>] (worker_thread+0x170/0x37c)
                  [<800ab36c>] (worker_thread+0x170/0x37c) from [<800af80c>] (kthread+0x80/0x88)
                  [<800af80c>] (kthread+0x80/0x88) from [<80062aa4>] (kernel_thread_exit+0x0/0x8)
                  Code: eaff9868 80537f4c 809db0fc e590316c (e5130004) 
                  \00\F0
                  

                  after some time(2 to 3 hour) it shoots this error...

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #22

                    There's a faulty module doing something wrong.

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • S Offline
                      S Offline
                      sachin786
                      wrote on last edited by
                      #23

                      the module is working properly for 4 hours or 5 hour then automatically turned off and in serial port terminal show above mention output...

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by SGaist
                        #24

                        That doesn't mean it doesn't do something wrong. For example, a small memory (one byte) leak can take days until it eats all the system's memory but it still will.

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • S Offline
                          S Offline
                          sachin786
                          wrote on last edited by
                          #25

                          i can't figure out what is the issue related to it error...

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #26

                            The driver used to talk with the device might be faulty.

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                            • SGaistS SGaist

                              The driver used to talk with the device might be faulty.

                              S Offline
                              S Offline
                              sachin786
                              wrote on last edited by
                              #27

                              @SGaist i am not sure about this...for temporary solution i have to reboot my device after 3 hour.. ..

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                              • M Mark81 referenced this topic on

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