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authorPaul Moore <paul@paul-moore.com>2017-09-01 16:44:34 +0300
committerPaul Moore <paul@paul-moore.com>2017-11-11 00:07:39 +0300
commit173743dd99a49c956b124a74c8aacb0384739a4c (patch)
tree1fccaffd2856fb56366dc02b7a943f86c04991cf /kernel/audit.c
parent196a5085592c62ffa4eb739d7ce49c040c2953a1 (diff)
downloadlinux-173743dd99a49c956b124a74c8aacb0384739a4c.tar.xz
audit: ensure that 'audit=1' actually enables audit for PID 1
Prior to this patch we enabled audit in audit_init(), which is too late for PID 1 as the standard initcalls are run after the PID 1 task is forked. This means that we never allocate an audit_context (see audit_alloc()) for PID 1 and therefore miss a lot of audit events generated by PID 1. This patch enables audit as early as possible to help ensure that when PID 1 is forked it can allocate an audit_context if required. Reviewed-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/audit.c')
-rw-r--r--kernel/audit.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index be1c28fd4d57..ec3d0802734d 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -85,13 +85,13 @@ static int audit_initialized;
#define AUDIT_OFF 0
#define AUDIT_ON 1
#define AUDIT_LOCKED 2
-u32 audit_enabled;
-u32 audit_ever_enabled;
+u32 audit_enabled = AUDIT_OFF;
+u32 audit_ever_enabled = !!AUDIT_OFF;
EXPORT_SYMBOL_GPL(audit_enabled);
/* Default state when kernel boots without any parameters. */
-static u32 audit_default;
+static u32 audit_default = AUDIT_OFF;
/* If auditing cannot proceed, audit_failure selects what happens. */
static u32 audit_failure = AUDIT_FAIL_PRINTK;
@@ -1549,8 +1549,6 @@ static int __init audit_init(void)
register_pernet_subsys(&audit_net_ops);
audit_initialized = AUDIT_INITIALIZED;
- audit_enabled = audit_default;
- audit_ever_enabled |= !!audit_default;
kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
if (IS_ERR(kauditd_task)) {
@@ -1572,6 +1570,8 @@ static int __init audit_enable(char *str)
audit_default = !!simple_strtol(str, NULL, 0);
if (!audit_default)
audit_initialized = AUDIT_DISABLED;
+ audit_enabled = audit_default;
+ audit_ever_enabled = !!audit_enabled;
pr_info("%s\n", audit_default ?
"enabled (after initialization)" : "disabled (until reboot)");