diff options
| author | Joel Becker <joel.becker@oracle.com> | 2010-10-15 13:03:09 -0700 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-10-15 13:03:09 -0700 |
| commit | fc3718918f13ad72827d62d36ea0f5fb55090644 (patch) | |
| tree | 4f9551256e02d08be37bab137f3d94182a67504c /security/keys/keyctl.c | |
| parent | 7bdb0d18bfd381cc5491eb95973ec5604b356c7e (diff) | |
| parent | d4396eafe402b710a8535137b3bf2abe6c059a15 (diff) | |
Merge branch 'globalheartbeat-2' of git://oss.oracle.com/git/smushran/linux-2.6 into ocfs2-merge-window
Conflicts:
fs/ocfs2/ocfs2.h
Diffstat (limited to 'security/keys/keyctl.c')
| -rw-r--r-- | security/keys/keyctl.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c index b2b0998d6ab..60924f6a52d 100644 --- a/security/keys/keyctl.c +++ b/security/keys/keyctl.c @@ -1272,6 +1272,7 @@ long keyctl_session_to_parent(void) keyring_r = NULL; me = current; + rcu_read_lock(); write_lock_irq(&tasklist_lock); parent = me->real_parent; @@ -1304,7 +1305,8 @@ long keyctl_session_to_parent(void) goto not_permitted; /* the keyrings must have the same UID */ - if (pcred->tgcred->session_keyring->uid != mycred->euid || + if ((pcred->tgcred->session_keyring && + pcred->tgcred->session_keyring->uid != mycred->euid) || mycred->tgcred->session_keyring->uid != mycred->euid) goto not_permitted; @@ -1319,6 +1321,7 @@ long keyctl_session_to_parent(void) set_ti_thread_flag(task_thread_info(parent), TIF_NOTIFY_RESUME); write_unlock_irq(&tasklist_lock); + rcu_read_unlock(); if (oldcred) put_cred(oldcred); return 0; @@ -1327,6 +1330,7 @@ already_same: ret = 0; not_permitted: write_unlock_irq(&tasklist_lock); + rcu_read_unlock(); put_cred(cred); return ret; |