linux-kernel - [PATCH] kexec: Fix omitting offset in extended crashkernel syntax

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Message-ID: <4A5BF922.2000503@jp.fujitsu.com>
Date:	Tue, 14 Jul 2009 12:18:58 +0900
From:	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
To:	linux-kernel@...r.kernel.org, kexec-ml <kexec@...ts.infradead.org>
Subject: [PATCH] kexec: Fix omitting offset in extended crashkernel syntax

Setting
 "crashkernel=512M-2G:64M,2G-:128M"
does not work but it turns to work if it has a trailing-whitespace,
like
 "crashkernel=512M-2G:64M,2G-:128M ".

It was because of a bug in the parser, running over the cmdline.

This patch adds a check of the termination.

Reported-by: Jin Dongming <jin.dongming@...css.fujitsu.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Tested-by: Jin Dongming <jin.dongming@...css.fujitsu.com>
---
 kernel/kexec.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/kexec.c b/kernel/kexec.c
index ae1c352..f336e21 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1228,7 +1228,7 @@ static int __init parse_crashkernel_mem(char 			*cmdline,
 	} while (*cur++ == ',');
 
 	if (*crash_size > 0) {
-		while (*cur != ' ' && *cur != '@')
+		while (*cur && *cur != ' ' && *cur != '@')
 			cur++;
 		if (*cur == '@') {
 			cur++;
-- 
1.6.0

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