This is a note to let you know that I've just added the patch titled
x86/apic: Fix parsing of the 'lapic' cmdline option
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-apic-fix-parsing-of-the-lapic-cmdline-option.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 27cf929845b10043f2257693c7d179a9e0b1980e Mon Sep 17 00:00:00 2001
From: Mathias Krause <[email protected]>
Date: Tue, 19 Feb 2013 20:47:07 +0100
Subject: x86/apic: Fix parsing of the 'lapic' cmdline option
From: Mathias Krause <[email protected]>
commit 27cf929845b10043f2257693c7d179a9e0b1980e upstream.
Including " lapic " in the kernel cmdline on an x86-64 kernel
makes it panic while parsing early params -- e.g. with no user
visible output.
Fix this bug by ensuring arg is non-NULL before passing it to
strncmp().
Reported-by: PaX Team <[email protected]>
Signed-off-by: Mathias Krause <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: Suresh Siddha <[email protected]>
Link:
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/x86/kernel/apic/apic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -131,7 +131,7 @@ static int __init parse_lapic(char *arg)
{
if (config_enabled(CONFIG_X86_32) && !arg)
force_enable_local_apic = 1;
- else if (!strncmp(arg, "notscdeadline", 13))
+ else if (arg && !strncmp(arg, "notscdeadline", 13))
setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER);
return 0;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.8/x86-apic-fix-parsing-of-the-lapic-cmdline-option.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
