From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Wed, 14 Feb 2018 07:14:17 +0000 Subject: [PATCH] x86/spectre: fix an error message Message-Id: <20180214071416.GA26677@mwanda> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Ingo Molnar , KarimAllah Ahmed Cc: "H. Peter Anvin" , x86@kernel.org, Thomas Gleixner , David Woodhouse , Borislav Petkov , Greg Kroah-Hartman , Andy Lutomirski , linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org If i = ARRAY_SIZE(mitigation_options) then we accidentally print garbage from one space beyond the end of the mitigation_options[] array. Fixes: 9005c6834c0f ("x86/spectre: Simplify spectre_v2 command line parsing") Signed-off-by: Dan Carpenter diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index debcdda88560..acee4ebec04f 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -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; } }