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authorDan Carpenter <error27@gmail.com>2010-08-10 18:02:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 08:59:18 -0700
commite400c28524af2d344b1663b27bf28984fa959a0e (patch)
tree00be68cbb87be859edd67da60dfd12506879fe01
parent2b24706a798d07cf40534d7763f608045e42e15f (diff)
cgroups: save space for the terminator
The original code didn't leave enough space for a NULL terminator. These strings are copied with strcpy() into fixed length buffers in cgroup_root_from_opts(). Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Serge E. Hallyn <serge@hallyn.com> Reviewd-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Ben Blum <bblum@andrew.cmu.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/cgroup.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index d83cab06da8..192f88c5b0f 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1102,7 +1102,7 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
if (opts->release_agent)
return -EINVAL;
opts->release_agent =
- kstrndup(token + 14, PATH_MAX, GFP_KERNEL);
+ kstrndup(token + 14, PATH_MAX - 1, GFP_KERNEL);
if (!opts->release_agent)
return -ENOMEM;
} else if (!strncmp(token, "name=", 5)) {
@@ -1123,7 +1123,7 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
if (opts->name)
return -EINVAL;
opts->name = kstrndup(name,
- MAX_CGROUP_ROOT_NAMELEN,
+ MAX_CGROUP_ROOT_NAMELEN - 1,
GFP_KERNEL);
if (!opts->name)
return -ENOMEM;