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authorCedric Le Goater <clg@fr.ibm.com>2007-07-15 23:41:06 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 09:05:47 -0700
commit467e9f4b5086a60a5cb2e032ccaf4a31abadc4c2 (patch)
treef21b3975db312e4cdee1d9d3622549de2648b7ff /fs/namespace.c
parent3e733f071e16bdad13a75eedb102e8941b09927e (diff)
downloadop-kernel-dev-467e9f4b5086a60a5cb2e032ccaf4a31abadc4c2.zip
op-kernel-dev-467e9f4b5086a60a5cb2e032ccaf4a31abadc4c2.tar.gz
fix create_new_namespaces() return value
dup_mnt_ns() and clone_uts_ns() return NULL on failure. This is wrong, create_new_namespaces() uses ERR_PTR() to catch an error. This means that the subsequent create_new_namespaces() will hit BUG_ON() in copy_mnt_ns() or copy_utsname(). Modify create_new_namespaces() to also use the errors returned by the copy_*_ns routines and not to systematically return ENOMEM. [oleg@tv-sign.ru: better changelog] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Cc: Pavel Emelianov <xemul@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index c811a94..5585623 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1451,7 +1451,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
new_ns = kmalloc(sizeof(struct mnt_namespace), GFP_KERNEL);
if (!new_ns)
- return NULL;
+ return ERR_PTR(-ENOMEM);
atomic_set(&new_ns->count, 1);
INIT_LIST_HEAD(&new_ns->list);
@@ -1465,7 +1465,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
if (!new_ns->root) {
up_write(&namespace_sem);
kfree(new_ns);
- return NULL;
+ return ERR_PTR(-ENOMEM);;
}
spin_lock(&vfsmount_lock);
list_add_tail(&new_ns->list, &new_ns->root->mnt_list);
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