Commit 9de29eac authored Feb 14, 2018 by Dan Carpenter Committed by Ingo Molnar Feb 15, 2018

x86/spectre: Fix an error message



If i == ARRAY_SIZE(mitigation_options) then we accidentally print
garbage from one space beyond the end of the mitigation_options[] array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: KarimAllah Ahmed <karahmed@amazon.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-janitors@vger.kernel.org
Fixes: 9005c683 ("x86/spectre: Simplify spectre_v2 command line parsing")
Link: http://lkml.kernel.org/r/20180214071416.GA26677@mwanda


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent b399151c

arch/x86/kernel/cpu/bugs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -174,7 +174,7 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void)
		}

		if (i >= ARRAY_SIZE(mitigation_options)) {
		pr_err("unknown option (%s). Switching to AUTO select\n", mitigation_options[i].option);
		pr_err("unknown option (%s). Switching to AUTO select\n", arg);
		return SPECTRE_V2_CMD_AUTO;
		}
		}