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Du Changbin b058809bfc scripts/gdb: fix lx-version string output 
A bug is present in GDB which causes early string termination when
parsing variables.  This has been reported [0], but we should ensure
that we can support at least basic printing of the core kernel strings.

For current gdb version (has been tested with 7.3 and 8.1), 'lx-version'
only prints one character.

  (gdb) lx-version
  L(gdb)

This can be fixed by casting 'linux_banner' as (char *).

  (gdb) lx-version
  Linux version 4.19.0-rc1+ (changbin@acer) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21 SMP Sat Sep 1 21:43:30 CST 2018

[0] https://sourceware.org/bugzilla/show_bug.cgi?id=20077

[kbingham@kernel.org: add detail to commit message]
Link: http://lkml.kernel.org/r/20181111162035.8356-1-kieran.bingham@ideasonboard.com
Fixes: 2d061d9994 ("scripts/gdb: add version command")
Signed-off-by: Du Changbin <changbin.du@gmail.com>
Signed-off-by: Kieran Bingham <kbingham@kernel.org>
Acked-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-04 13:13:47 -08:00
..
__init__.py scripts/gdb: add empty package initialization script 2015-02-28 09:57:51 -08:00
.gitignore scripts/gdb: add constants.py to .gitignore 2016-07-15 14:54:27 +09:00
constants.py.in scripts/gdb: add lx-fdtdump command 2017-07-12 16:26:00 -07:00
cpus.py scripts/gdb: cast CPU numbers to integer 2016-05-23 17:04:14 -07:00
dmesg.py scripts/gdb: lx-dmesg: use explicit encoding=utf8 errors=replace 2017-07-12 16:26:01 -07:00
lists.py scripts/gdb: provide kernel list item generators 2016-05-23 17:04:14 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
modules.py scripts/gdb: support !CONFIG_MODULES gracefully 2016-05-23 17:04:14 -07:00
proc.py scripts/gdb: fix lx-version string output 2019-01-04 13:13:47 -08:00
symbols.py scripts/gdb: Perform path expansion to lx-symbol's arguments 2016-07-15 14:54:27 +09:00
tasks.py scripts/gdb/linux/tasks.py: fix get_thread_info 2018-01-19 10:09:41 -08:00
utils.py scripts/gdb: improve types abstraction for gdb python scripts 2016-05-23 17:04:14 -07:00