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Subject[PATCH ghak59 V2 5/6] audit: kill trees before logging syscall exit for exit/free
Date
The EOE record was being issued prior to the pruning of the killed_tree
list.

Move the kill_trees call before the audit_log_exit call in
__audit_free() and __audit_syscall_exit() so that the user library
doesn't leave out any appended pruned trees CONFIG_CHANGE records due to
the EOE flagging the end of the event.

See: https://github.com/linux-audit/audit-kernel/issues/50
See: https://github.com/linux-audit/audit-kernel/issues/59
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
---
kernel/auditsc.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 986c5ce..55fd2a3 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1482,6 +1482,8 @@ void __audit_free(struct task_struct *tsk)
if (!context)
return;

+ if (!list_empty(&context->killed_trees))
+ audit_kill_trees(context);
/* Check for system calls that do not go through the exit
* function (e.g., exit_group), then free context block.
* We use GFP_ATOMIC here because we might be doing this
@@ -1489,8 +1491,6 @@ void __audit_free(struct task_struct *tsk)
/* that can happen only if we are called from do_exit() */
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
audit_log_exit(context, tsk);
- if (!list_empty(&context->killed_trees))
- audit_kill_trees(context);

audit_free_context(context);
}
@@ -1570,15 +1570,14 @@ void __audit_syscall_exit(int success, long return_code)
if (!context)
return;

+ if (!list_empty(&context->killed_trees))
+ audit_kill_trees(context);
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
audit_log_exit(context, current);

context->in_syscall = 0;
context->prio = context->state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;

- if (!list_empty(&context->killed_trees))
- audit_kill_trees(context);
-
audit_free_names(context);
unroll_tree_refs(context, NULL, 0);
audit_free_aux(context);
--
1.8.3.1
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