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    Subject[PATCHv4 2/3]posix_acl: Add the acl pointer check
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    Add two acl pointer checks before this function.

    ---

    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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      Last update: 2009-12-29 00:39    [W:0.018 / U:0.412 seconds]
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