Messages in this thread Patch in this message | | | Date | Mon, 28 Dec 2009 23:01:27 +0800 | Subject | Re: [PATCHv3 2/3]posix_acl: add the pointer check into fs/posix_acl.c | From | liu weni <> |
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Add two acl pointer checks before this function.
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Signed-off-by: Liuwenyi <qingshenlwy@gmail.com> CC: Alexander Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 39df95a..0d2a7a2 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -150,6 +150,12 @@ posix_acl_equiv_mode(const struct posix_acl *acl, mode_t *mode_p) mode_t mode = 0; int not_equiv = 0;
+ if (!acl) + return -EINVAL; + + if (IS_ERR(acl)) + return PTR_ERR(acl); + FOREACH_ACL_ENTRY(pa, acl, pe) { switch (pa->e_tag) { case ACL_USER_OBJ:
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