[PATCH ALT3] audit: hide PATH records of anonymous parents and their children
From: Richard Guy Briggs
Date: Tue Feb 28 2017 - 22:26:41 EST
Tracefs or debugfs were causing hundreds to thousands of null PATH records to
be associated with the init_module and finit_module SYSCALL records on a few
modules when the following rule was in place for startup:
-a always,exit -F arch=x86_64 -S init_module -F key=mod-load
This patch hides those records, but the SYSCALL record "items=" count will
still reflect the number of hidden items. (This will fail the test below.)
See https://github.com/linux-audit/audit-kernel/issues/8
Test case: https://github.com/linux-audit/audit-testsuite/issues/42
Signed-off-by: Richard Guy Briggs <rgb@xxxxxxxxxx>
---
kernel/auditsc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 4db32e8..58ea64e 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1914,6 +1914,7 @@ void __audit_inode_child(struct inode *parent,
if (!n)
return;
audit_copy_inode(n, NULL, parent);
+ n->hidden = true;
}
if (!found_child) {
@@ -1928,6 +1929,8 @@ void __audit_inode_child(struct inode *parent,
found_child->name = found_parent->name;
found_child->name_len = AUDIT_NAME_FULL;
found_child->name->refcnt++;
+ } else {
+ found_child->hidden = true;
}
}
--
1.7.1