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authorzhangxiliang <zhangxiliang@cn.fujitsu.com>2008-08-01 19:15:47 +0800
committerAl Viro <viro@zeniv.linux.org.uk>2008-08-01 12:15:03 -0400
commit980dfb0db340b95094732d78b55311f2c539c1af (patch)
tree7235e21116a0958591adeaec4e51734cc224094e
parent036bbf76ad9f83781590623111b80ba0b82930ac (diff)
[PATCH] Fix the kernel panic of audit_filter_task when key field is set
When calling audit_filter_task(), it calls audit_filter_rules() with audit_context is NULL. If the key field is set, the result in audit_filter_rules() will be set to 1 and ctx->filterkey will be set to key. But the ctx is NULL in this condition, so kernel will panic. Signed-off-by: Zhang Xiliang <zhangxiliang@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--kernel/auditsc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 580a5389fd9..496c3dd3727 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -610,7 +610,7 @@ static int audit_filter_rules(struct task_struct *tsk,
if (!result)
return 0;
}
- if (rule->filterkey)
+ if (rule->filterkey && ctx)
ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC);
switch (rule->action) {
case AUDIT_NEVER: *state = AUDIT_DISABLED; break;