x86/spectre: Fix an error message

Web:        https://git.kernel.org/torvalds/c/9de29eac8d2189424d81c0d840cd0469aa3d41c8
Commit:     9de29eac8d2189424d81c0d840cd0469aa3d41c8
Parent:     b399151cb48db30ad1e0e93dd40d68c6d007b637
Refname:    refs/heads/master
Author:     Dan Carpenter <[email protected]>
AuthorDate: Wed Feb 14 10:14:17 2018 +0300
Committer:  Ingo Molnar <[email protected]>
CommitDate: Thu Feb 15 01:15:53 2018 +0100

    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 <[email protected]>
    Cc: Andy Lutomirski <[email protected]>
    Cc: Borislav Petkov <[email protected]>
    Cc: David Woodhouse <[email protected]>
    Cc: Greg Kroah-Hartman <[email protected]>
    Cc: KarimAllah Ahmed <[email protected]>
    Cc: Linus Torvalds <[email protected]>
    Cc: Peter Zijlstra <[email protected]>
    Cc: Thomas Gleixner <[email protected]>
    Cc: [email protected]
    Fixes: 9005c6834c0f ("x86/spectre: Simplify spectre_v2 command line parsing")
    Link: http://lkml.kernel.org/r/20180214071416.GA26677@mwanda
    Signed-off-by: Ingo Molnar <[email protected]>
---
 arch/x86/kernel/cpu/bugs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 4acf16a76d1e..d71c8b54b696 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;
 		}
 	}
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