Hi,
On Thu, Jan 30, 2020 at 12:09 PM Sergio Paracuellos
<sergio.paracuel...@gmail.com> wrote:
[snip]
> >
> > "bt f" (short for "backtrace full") delivers more information.
>
> I tried also this command and the backtrace was the same, no extra info :-(.
>
> > It's perhaps also more helpful if gdb can resolve the shared
> > libraries and have the symbols somewhere (so that we get the
> > somewhat exact location ine th source code).
> > And for the 2nd core file (from bash) too.
> > Perhaps there are similarities ...
>
> I'll try to add debug symbols for these two and see if we can get more
> info about this, thanks.
Resolving all debug symbols I got the following:
For the sleep core:
Core was generated by `sleep 1'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0xfffffcd7fffffc60 in ?? ()
(gdb) set sysroot /opt/poky/2.7.2/sysroots/aarch64-poky-linux/
Reading symbols from
/opt/poky/2.7.2/sysroots/aarch64-poky-linux/lib/libm.so.6...Reading
symbols from
/opt/poky/2.7.2/sysroots/aarch64-poky-linux/lib/.debug/libm-2.29.so...done.
done.
Reading symbols from
/opt/poky/2.7.2/sysroots/aarch64-poky-linux/lib/libc.so.6...Reading
symbols from
/opt/poky/2.7.2/sysroots/aarch64-poky-linux/lib/.debug/libc-2.29.so...done.
done.
Reading symbols from
/opt/poky/2.7.2/sysroots/aarch64-poky-linux/lib/ld-linux-aarch64.so.1...Reading
symbols from
/opt/poky/2.7.2/sysroots/aarch64-poky-linux/lib/.debug/ld-2.29.so...done.
done.
(gdb) bt
#0 0xfffffcd7fffffc60 in ?? ()
#1 0x000000555668af74 in xfunc_die () at libbb/xfunc_die.c:19
#2 0x000000555668a0d8 in run_applet_no_and_exit (applet_no=130,
name=<optimized out>, argv=0x7fd2369798) at libbb/appletlib.c:998
#3 0x000000555668a28c in run_applet_and_exit (name=0x7fd2369f00
"sleep", argv=0x7fd2369798) at libbb/appletlib.c:1014
#4 0x000000555668a410 in main (argc=<optimized out>,
argv=0x7fd2369798) at libbb/appletlib.c:1122
For the bash one:
Core was generated by `-sh'.
Program terminated with signal SIGSEGV, Segmentation fault.
(gdb) bt
#0 hash_search (string=0x555a858e60 "_",
table=table@entry=0x55984c9270, flags=flags@entry=0) at
../bash-4.4.18/hashlib.c:183
#1 0x000000555a7d2720 in hash_lookup (hashed_vars=0x55984c9270,
name=0x555a858e60 "_") at ../bash-4.4.18/variables.c:1821
#2 bind_variable_internal (name=0x555a858e60 "_", value=0x55984ed960
"]", table=0x55984c9270, hflags=<optimized out>, aflags=0) at
../bash-4.4.18/variables.c:2695
#3 0x000000555a7c6fd0 in bind_lastarg (arg=arg@entry=0x55984ed960
"]") at ../bash-4.4.18/execute_cmd.c:3838
#4 0x000000555a7c9d30 in execute_simple_command
(simple_command=<optimized out>, pipe_in=<optimized out>,
pipe_in@entry=-1, pipe_out=pipe_out@entry=-1, async=async@entry=0,
fds_to_close=fds_to_close@entry=0x55984ed900) at
../bash-4.4.18/execute_cmd.c:4401
#5 0x000000555a7cb474 in execute_command_internal
(command=command@entry=0x55984ed2a0,
asynchronous=asynchronous@entry=0, pipe_in=pipe_in@entry=-1,
pipe_out=pipe_out@entry=-1,
fds_to_close=fds_to_close@entry=0x55984ed900) at
../bash-4.4.18/execute_cmd.c:807
#6 0x000000555a7ccbe0 in execute_command (command=0x55984ed2a0) at
../bash-4.4.18/execute_cmd.c:405
#7 0x000000555a7ccdb0 in execute_while_or_until
(while_command=0x55984ecc10, type=type@entry=0) at
../bash-4.4.18/execute_cmd.c:3492
#8 0x000000555a7cb344 in execute_while_command
(while_command=<optimized out>) at ../bash-4.4.18/execute_cmd.c:3460
#9 execute_command_internal (command=command@entry=0x55984ec630,
asynchronous=asynchronous@entry=0, pipe_in=pipe_in@entry=-1,
pipe_out=pipe_out@entry=-1,
fds_to_close=fds_to_close@entry=0x55984edd80) at
../bash-4.4.18/execute_cmd.c:916
#10 0x000000555a7ccbe0 in execute_command (command=0x55984ec630) at
../bash-4.4.18/execute_cmd.c:405
#11 0x000000555a7b4f90 in reader_loop () at ../bash-4.4.18/eval.c:180
#12 0x000000555a7b3570 in main (argc=1, argv=0x7ffe3f4668,
env=<optimized out>) at ../bash-4.4.18/shell.c:792
Best regards,
Sergio Paracuellos
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