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objtool: Fix seg fault caused by missing parameter 

Fix a seg fault when no parameter is provided to 'objtool orc'.

Signed-off-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/9172803ec7ebb72535bcd0b7f966ae96d515968e.1514666459.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Simon Ser 2017-12-30 14:43:31 -06:00 committed by Ingo Molnar
parent e7e83dd3ff
commit d89e426499
1 changed files with 3 additions and 1 deletions
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4
tools/objtool/builtin-orc.c
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@ -44,6 +44,9 @@ int cmd_orc(int argc, const char **argv)
const char *objname;
argc--; argv++;
if (argc <= 0)
usage_with_options(orc_usage, check_options);
if (!strncmp(argv[0], "gen", 3)) {
argc = parse_options(argc, argv, check_options, orc_usage, 0);
if (argc != 1)
@ -52,7 +55,6 @@ int cmd_orc(int argc, const char **argv)
objname = argv[0];
return check(objname, no_fp, no_unreachable, true);
}
if (!strcmp(argv[0], "dump")) {