This is a note to let you know that I've just added the patch titled
x86: Fix panic when handling "mem={invalid}" param
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
x86-fix-panic-when-handling-mem-invalid-param.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <[email protected]> know about it.
>From 77eed821accf5dd962b1f13bed0680e217e49112 Mon Sep 17 00:00:00 2001
From: Kamal Mostafa <[email protected]>
Date: Thu, 3 Feb 2011 17:38:04 -0800
Subject: x86: Fix panic when handling "mem={invalid}" param
From: Kamal Mostafa <[email protected]>
commit 77eed821accf5dd962b1f13bed0680e217e49112 upstream.
Avoid removing all of memory and panicing when "mem={invalid}"
is specified, e.g. mem=blahblah, mem=0, or mem=nopentium (on
platforms other than x86_32).
Signed-off-by: Kamal Mostafa <[email protected]>
BugLink: http://bugs.launchpad.net/bugs/553464
Cc: Yinghai Lu <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/x86/kernel/e820.c | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1245,6 +1245,9 @@ static int __init parse_memopt(char *p)
userdef = 1;
mem_size = memparse(p, &p);
+ /* don't remove all of memory when handling "mem={invalid}" param */
+ if (mem_size == 0)
+ return -EINVAL;
e820_remove_range(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
return 0;
Patches currently in longterm-queue-2.6.32 which might be from
[email protected] are
/home/gregkh/linux/longterm/longterm-queue-2.6.32/queue-2.6.32/x86-fix-panic-when-handling-mem-invalid-param.patch
/home/gregkh/linux/longterm/longterm-queue-2.6.32/queue-2.6.32/x86-emit-mem-nopentium-ignored-warning-when-not-supported.patch
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