David Howells d9a9b4aeea KEYS: Fix an RCU warning in the reading of user keys ... Fix an RCU warning in the reading of user keys: =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- security/keys/user_defined.c:202 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 1 lock held by keyctl/3637: #0: (&key->sem){+++++.}, at: [<ffffffff811a80ae>] keyctl_read_key+0x9c/0xcf stack backtrace: Pid: 3637, comm: keyctl Not tainted 2.6.34-rc5-cachefs #18 Call Trace: [<ffffffff81051f6c>] lockdep_rcu_dereference+0xaa/0xb2 [<ffffffff811aa55f>] user_read+0x47/0x91 [<ffffffff811a80be>] keyctl_read_key+0xac/0xcf [<ffffffff811a8a06>] sys_keyctl+0x75/0xb7 [<ffffffff81001eeb>] system_call_fastpath+0x16/0x1b Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>		2010-05-05 11:38:52 +10:00
..
compat.c	KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]	2009-09-02 21:29:22 +10:00
gc.c	security: Apply lockdep-based checking to rcu_dereference() uses	2010-02-25 10:34:52 +01:00
internal.h	KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]	2009-09-02 21:29:22 +10:00
key.c	KEYS: Fix garbage collector	2009-09-15 09:11:02 +10:00
keyctl.c	Keys: KEYCTL_SESSION_TO_PARENT needs TIF_NOTIFY_RESUME architecture support	2009-12-17 09:27:59 +11:00
keyring.c	keys: don't need to use RCU in keyring_read() as semaphore is held	2010-04-28 08:37:15 +10:00
Makefile	KEYS: Add garbage collection for dead, revoked and expired keys. [try #6]	2009-09-02 21:29:11 +10:00
permission.c	keys: consider user namespace in key_permission	2009-02-27 12:35:09 +11:00
proc.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
process_keys.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
request_key_auth.c	CRED: Inaugurate COW credentials	2008-11-14 10:39:23 +11:00
request_key.c	keys: the request_key() syscall should link an existing key to the dest keyring	2010-04-27 16:26:03 -07:00
sysctl.c	sysctl: Drop & in front of every proc_handler.	2009-11-18 08:37:40 -08:00
user_defined.c	KEYS: Fix an RCU warning in the reading of user keys	2010-05-05 11:38:52 +10:00