linux/security/integrity
Madhuparna Bhowmik a0006477c6 evm: Fix RCU list related warnings
[ Upstream commit 770f60586d ]

This patch fixes the following warning and few other instances of
traversal of evm_config_xattrnames list:

[   32.848432] =============================
[   32.848707] WARNING: suspicious RCU usage
[   32.848966] 5.7.0-rc1-00006-ga8d5875ce5f0b #1 Not tainted
[   32.849308] -----------------------------
[   32.849567] security/integrity/evm/evm_main.c:231 RCU-list traversed in non-reader section!!

Since entries are only added to the list and never deleted, use
list_for_each_entry_lockless() instead of list_for_each_entry_rcu for
traversing the list.  Also, add a relevant comment in evm_secfs.c to
indicate this fact.

Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org> (RCU viewpoint)
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-07 13:17:56 +02:00
..
evm evm: Fix RCU list related warnings 2020-06-07 13:17:56 +02:00
ima ima: Fix return value of ima_write_policy() 2020-05-27 17:37:29 +02:00
digsig_asymmetric.c integrity: prevent deadlock during digsig verification. 2018-07-18 07:27:22 -04:00
digsig.c integrity/security: fix digsig.c build error with header file 2018-02-22 20:09:08 -08:00
iint.c integrity: silence warning when CONFIG_SECURITYFS is not enabled 2018-07-18 07:27:22 -04:00
integrity_audit.c ima: Use audit_log_format() rather than audit_log_string() 2018-07-18 07:27:22 -04:00
integrity.h ima: Do not audit if CONFIG_INTEGRITY_AUDIT is not set 2018-07-18 07:27:22 -04:00
Kconfig security: integrity: Remove select to deleted option PUBLIC_KEY_ALGO_RSA 2016-04-12 19:54:58 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00