Re: [libgpiod] segfault with function gpiod_chip_get_all_lines(chip, &bulk);

[John Rose <ohimg801@xxxxxxxxx>]

Ok, thanks.

On Wed, Jan 8, 2020 at 3:03 AM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
>
> pt., 27 gru 2019 o 22:44 John Rose <ohimg801@xxxxxxxxx> napisał(a):
> >
> > SBC:    HardKernel Odroid N2 4Gb.
> > OS:     Ubuntu 18.04.3 Mate' DE.
> >         Linux odroid_N2 4.9.196-63 #1 SMP PREEMPT Thu Oct 17 00:44:03
> > -03 2019 aarch64 aarch64 aarch64 GNU/Linux
> > ------------------------------------------------------
> > A basic test of the gpiod_chip_get_all_lines function.
> > ------------------------------------------------------
> > /*--+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
> >  * libgpio_test_03
> >  *
> >  *
> >  *
> >  */
> > /*******gdb debugger
> > error********************************************************************************************************
> > t3st3r1@odroid_N2:~$ sudo gdb c_projects/libgpio_test_03/main
> > GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
> > Copyright (C) 2018 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> > and "show warranty" for details.
> > This GDB was configured as "aarch64-linux-gnu".
> > Type "show configuration" for configuration details.
> > For bug reporting instructions, please see:
> > <http://www.gnu.org/software/gdb/bugs/>.
> > Find the GDB manual and other documentation resources online at:
> > <http://www.gnu.org/software/gdb/documentation/>.
> > For help, type "help".
> > Type "apropos word" to search for commands related to "word"...
> > Reading symbols from c_projects/libgpio_test_03/main...done.
> > (gdb) run
> > Starting program: /home/t3st3r1/c_projects/libgpio_test_03/main
> > OdroidN2 -- Ubuntu 18.04.3 LTS
> > libgpio_test_03
> >
> > gpiod_chip_open() OK.
> >
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x0000007fb7fa48d0 in gpiod_line_bulk_add (line=0x555556a910,
> > bulk=0x7ffffff2a0) at ../include/gpiod.h:578
> > 578 bulk->lines[bulk->num_lines++] = line;
> > (gdb)
>
> The problem seems to be gone in current master. I get the following output:
>
> ---
> OdroidN2 -- Ubuntu 18.04.3 LTS
> libgpio_test_03
>
> gpiod_chip_open() OK.
>
> Exiting.
> ---
>
> Bartosz