打开未使用的端口和系统调用open（“/dev/tty”，…）writev（7，[{“***glibc detected***”，23}

我使用的是Linux平台3.12.13和2.6.35.3以及imx5x系列处理器。 在我的程序中，我使用两个串行端口进行读写操作/dev/ttymxc2和/dev/ttymxc1。在一段时间后，执行/dev/tty开放系统调用，该调用不是我程序的一部分&错误是open/dev/tty，…writev7，[{*glibc detected*，23}

请建议一些解决方案，我在代码中没有使用的端口仍然执行系统调用以打开/dev/tty/

这是一些战略日志

open("/dev/ttymxc2", O_RDWR|O_NOCTTY|O_NONBLOCK) = 4
nanosleep({0, 200000000}, NULL)         = 0
ioctl(4, TCFLSH, 0x2)                   = 0
ioctl(4, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B9600 opost -isig -icanon -echo ...}) = 0
ioctl(4, SNDCTL_TMR_START or SNDRV_TIMER_IOCTL_TREAD or TCSETS, {B9600 opost -isig -icanon -echo ...}) = 0
open("/dev/ttymxc0", O_RDWR|O_NONBLOCK) = 5
ioctl(5, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B115200 opost -isig -icanon -echo ...}) = 0
ioctl(5, SNDCTL_TMR_START or SNDRV_TIMER_IOCTL_TREAD or TCSETS, {B115200 opost -isig -icanon -echo ...}) = 0
open("/dev/ttymxc1", O_RDWR|O_NOCTTY|O_NONBLOCK) = 6
nanosleep({0, 200000000}, NULL)         = 0
ioctl(6, TCFLSH, 0x2)                   = 0
ioctl(6, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B9600 opost -isig -icanon -echo ...}) = 0
ioctl(6, SNDCTL_TMR_START or SNDRV_TIMER_IOCTL_TREAD or TCSETS, {B9600 opost -isig -icanon -echo ...}) = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x76f2d000
write(1, "in main \n", 9)               = 9
write(1, " Leaving process fun \n", 22) = 22
sigreturn() (mask [])                   = 71
write(1, "bab0  bab0\n", 11)            = 11

open("/dev/tty", O_RDWR|O_NOCTTY|O_NONBLOCK) = 7

writev(7, [{"*** glibc detected *** ", 23}, {"./test11_2", 10}, {": ", 2}, {"double free or corruption (!prev"..., 33}, {": 0x", 4}, {"00bfa0c0", 8}, {" ***\n", 5}], 7) = 85

mmap2(NULL, 2097152, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x76d2d000
munmap(0x76d2d000, 864256)              = 0
munmap(0x76f00000, 184320)              = 0
mprotect(0x76e00000, 135168, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0
write(1, "final out", 9)                = 9
gettid()                                = 8796
tgkill(8796, 8796, SIGABRT)             = 0
--- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, si_pid=8796, si_uid=0} ---
+++ killed by SIGABRT +++

请提出一些解决办法

您需要修复glibc为您发现的堆损坏错误

一种方法是在Valgrind下运行您的程序，但我认为它不适用于imx5x

另一种方法是使用export MALLOC\u CHECK\u2运行程序。请参阅

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另一种方法是在您的工具链支持的情况下使用它。

您忽略了错误消息的重要部分：writev7、[{***glibc detected***，23}、{./test11_2，10}、{：，2}，{双重释放或损坏。您的程序中有一个严重的错误；它要么释放同一内存两次，要么内存损坏。修复该错误，消息将消失。