kexec: fix omitting offset in extended crashkernel syntax
authorHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Wed, 29 Jul 2009 22:02:08 +0000 (15:02 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 30 Jul 2009 02:10:34 +0000 (19:10 -0700)
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@np.css.fujitsu.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Tested-by: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/kexec.c

index ae1c35201cc873d697921cb2c5da95896d89493d..f336e2107f980e2546ecc118d2dd3239f655ebae 100644 (file)
@@ -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++;