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Reading symbols from ./minicom...done.
(gdb) b 77
Breakpoint 1 at 0x5365: file minicom.c, line 77.
(gdb) run
Starting program: /apps/minicom-2.7.1/debian/minicom/usr/bin/minicom -D /dev/ttyUSB1
Lockfile is stale. Overriding it..

Breakpoint 1, port_init () at minicom.c:77
77	  m_setparms(portfd, P_BAUDRATE, P_PARITY, P_BITS, P_STOPB,
(gdb) s
78	             P_HASRTS[0] == 'Y', P_HASXON[0] == 'Y');
(gdb) s
77	  m_setparms(portfd, P_BAUDRATE, P_PARITY, P_BITS, P_STOPB,
(gdb) s
m_setparms (fd=3, baudr=0x5555557866e0 <mpars+4032> "1500000", 
    par=0x555555786800 <mpars+4320> "N", bits=0x555555786770 <mpars+4176> "8", 
    stopb=0x555555786890 <mpars+4464> "1", hwf=1, swf=0) at sysdep1.c:396
396	{
(gdb) s
397	  int spd = -1;
(gdb) s
399	  int bit = bits[0];
(gdb) s
408	  if (portfd_is_socket)
(gdb) s
413	  tcgetattr(fd, &tty);
(gdb) s
__GI___tcgetattr (fd=3, termios_p=0x7fffffffde10)
    at ../sysdeps/unix/sysv/linux/tcgetattr.c:34
34	{
(gdb) s
38	  retval = INLINE_SYSCALL (ioctl, 3, fd, TCGETS, &k_termios);
(gdb) s
34	{
(gdb) s
38	  retval = INLINE_SYSCALL (ioctl, 3, fd, TCGETS, &k_termios);
(gdb) s
40	  if (__glibc_likely (retval == 0))
(gdb) s
46	      termios_p->c_line = k_termios.c_line;
(gdb) s
63		memset (__mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
(gdb) s
42	      termios_p->c_iflag = k_termios.c_iflag;
(gdb) s
63		memset (__mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
(gdb) s
42	      termios_p->c_iflag = k_termios.c_iflag;
(gdb) s
46	      termios_p->c_line = k_termios.c_line;
(gdb) s
51	      termios_p->c_ispeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
(gdb) s
63		memset (__mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
(gdb) s
51	      termios_p->c_ispeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
(gdb) s
58	      termios_p->c_ospeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
(gdb) s
63		memset (__mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
(gdb) s
77	}
(gdb) s
m_setparms (fd=3, baudr=0x5555557866e0 <mpars+4032> "1500000", 
    par=0x555555786800 <mpars+4320> "N", bits=0x555555786770 <mpars+4176> "8", 
    stopb=0x555555786890 <mpars+4464> "1", hwf=1, swf=0) at sysdep1.c:420
420	  if (bit == '7' && (par[0] == 'M' || par[0] == 'S'))
(gdb) s
Warning:
Cannot insert breakpoint 0.
Cannot access memory at address 0x584724c9a6077db8

__longjmp () at ../sysdeps/x86_64/__longjmp.S:45
45		LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
(gdb) s
__longjmp () at ../sysdeps/x86_64/__longjmp.S:56
56		movq (JB_RBX*8)(%rdi),%rbx
(gdb) s
57		movq (JB_R12*8)(%rdi),%r12
(gdb) s
58		movq (JB_R13*8)(%rdi),%r13
(gdb) s
59		movq (JB_R14*8)(%rdi),%r14
(gdb) s
60		movq (JB_R15*8)(%rdi),%r15
(gdb) s
62		mov %esi, %eax
(gdb) s
63		mov %R8_LP,%RSP_LP
(gdb) s
64		movq %r9,%rbp
(gdb) s
65		LIBC_PROBE (longjmp_target, 3,
(gdb) s
67		jmpq *%rdx
(gdb) s

Program received signal SIGSEGV, Segmentation fault.
__longjmp () at ../sysdeps/x86_64/__longjmp.S:67
67		jmpq *%rdx
(gdb) s

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) 