[Bug tui/18351] New: Reproducible Segmentation fault running target after 'layout regs' executed

[Bug tui/18351] New: Reproducible Segmentation fault running target after 'layout regs' executed

[proto0x0 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18351

            Bug ID: 18351
           Summary: Reproducible Segmentation fault running target after
                    'layout regs' executed
           Product: gdb
           Version: 7.9
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tui
          Assignee: unassigned at sourceware dot org
          Reporter: proto0x0 at gmail dot com
  Target Milestone: ---
             Flags: security?

Platform: Linux -redacted- 3.19.3-3-ARCH #1 SMP PREEMPT Wed Apr 8 14:10:00 CEST
2015 x86_64 GNU/Linux
Version: GDB 7.9

The following sequence reliably triggers a SIGSEGV and a core dump on GDB 7.9:

./gdb [any program]
(gdb) layout regs
(gdb) r
Segmentation fault (core dumped)

Backtrace of coredump:
#0  0x00007f44e31c4f15 in malloc_consolidate () from /usr/lib/libc.so.6
#1  0x00007f44e31c5c68 in _int_free () from /usr/lib/libc.so.6
#2  0x00000000006b1af5 in ?? ()
#3  0x000000000057f245 in val_print ()
#4  0x00000000005a16c4 in ?? ()
#5  0x00000000005a4df9 in default_print_registers_info ()
#6  0x00000000004ed0a2 in ?? ()
#7  0x00000000004ed57b in tui_show_registers ()
#8  0x00000000004ea422 in ?? ()
#9  0x0000000000687fe9 in select_frame ()
#10 0x000000000068809f in get_selected_frame ()
#11 0x00000000005cff27 in get_current_arch ()
#12 0x00000000004e9d55 in tui_get_begin_asm_address ()
#13 0x00000000004f1e6f in tui_display_main ()
#14 0x00000000005f86cd in observer_notify_new_objfile ()
#15 0x0000000000594d1b in ?? ()
#16 0x0000000000695509 in solib_read_symbols ()
#17 0x0000000000695955 in solib_add ()
#18 0x0000000000490e98 in ?? ()
#19 0x00000000005a2da5 in post_create_inferior ()
#20 0x00000000005a3493 in ?? ()
#21 0x000000000067f57c in execute_command ()
#22 0x00000000005c40a5 in ?? ()
#23 0x00000000005c4734 in ?? ()
#24 0x00007f44e4c6f25e in rl_callback_read_char () from
/usr/lib/libreadline.so.6
#25 0x00000000005c4109 in ?? ()
#26 0x00000000005c4153 in stdin_event_handler ()
#27 0x00000000005c2f25 in ?? ()
#28 0x00000000005c31b8 in gdb_do_one_event ()
#29 0x00000000005c329e in start_event_loop ()
#30 0x00000000005bd073 in ?? ()
#31 0x00000000005ba425 in catch_errors ()
#32 0x00000000005be0be in ?? ()
#33 0x00000000005ba425 in catch_errors ()
#34 0x00000000005be42b in gdb_main ()
#35 0x000000000045dd15 in main ()

Reproduced on `/bin/true`, `/bin/false`, `/bin/cat` and programs compiled with
-ggdb (i.e. this seems to apply to any binary).

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug tui/18351] Reproducible Segmentation fault running target after 'layout regs' executed

[palves at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18351

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |palves at redhat dot com
         Resolution|---                         |FIXED

--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Can't reproduce this with master.  The backtrace looks similar to others we
fixed after 7.9, so I think this is fixed.  Please reopen if you can reproduce
it with current master (soon to branch for 7.10).

-- 
You are receiving this mail because:
You are on the CC list for the bug.