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Frederick Lawler 722a6972de ima: process_measurement() needlessly takes inode_lock() on MAY_READ 
[ Upstream commit 30d68cb0c3 ]

On IMA policy update, if a measure rule exists in the policy,
IMA_MEASURE is set for ima_policy_flags which makes the violation_check
variable always true. Coupled with a no-action on MAY_READ for a
FILE_CHECK call, we're always taking the inode_lock().

This becomes a performance problem for extremely heavy read-only workloads.
Therefore, prevent this only in the case there's no action to be taken.

Signed-off-by: Frederick Lawler <fred@cloudflare.com>
Acked-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-06-04 14:41:53 +02:00
..
apparmor apparmor: test: Fix memory leak for aa_unpack_strdup() 2024-12-09 10:32:45 +01:00
bpf bpf: lsm: Set bpf_lsm_blob_sizes.lbs_task to 0 2024-10-04 16:30:02 +02:00
integrity ima: process_measurement() needlessly takes inode_lock() on MAY_READ 2025-06-04 14:41:53 +02:00
keys security/keys: fix slab-out-of-bounds in key_task_permission 2024-11-14 13:19:30 +01:00
landlock landlock: Add the errata interface 2025-04-25 10:45:57 +02:00
loadpin LoadPin: Annotate struct dm_verity_loadpin_trusted_root_digest with __counted_by 2023-08-25 16:07:30 -07:00
lockdown selinux: remove the runtime disable functionality 2023-03-20 12:34:23 -04:00
safesetid safesetid: check size of policy writes 2025-02-17 09:40:06 +01:00
selinux selinux: ignore unknown extended permissions 2025-01-09 13:31:54 +01:00
smack smack: dont compile ipv6 code unless ipv6 is configured 2025-04-10 14:37:25 +02:00
tomoyo tomoyo: don't emit warning in tomoyo_write_control() 2025-02-17 09:40:07 +01:00
yama sysctl-6.4-rc1 2023-04-27 16:52:33 -07:00
commoncap.c lsm: constify the 'target' parameter in security_capget() 2023-08-08 16:48:47 -04:00
device_cgroup.c device_cgroup: Fix kernel-doc warnings in device_cgroup 2023-06-21 09:30:49 -04:00
inode.c security: convert to ctime accessor functions 2023-07-24 10:30:08 +02:00
Kconfig proc: add config & param to block forcing mem writes 2024-10-10 11:57:27 +02:00
Kconfig.hardening hardening: Move BUG_ON_DATA_CORRUPTION to hardening options 2023-08-15 14:57:25 -07:00
lsm_audit.c lsm: fix a number of misspellings 2023-05-25 17:52:15 -04:00
Makefile security: remove unneeded subdir-$(CONFIG_...) 2021-09-03 08:17:20 +09:00
min_addr.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
security.c evm: don't copy up 'security.evm' xattr 2024-08-29 17:33:31 +02:00