From: zhangxiliang Date: Fri, 1 Aug 2008 11:15:47 +0000 (+0800) Subject: [PATCH] Fix the kernel panic of audit_filter_task when key field is set X-Git-Tag: v2.6.27-rc2~106^2~1 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=980dfb0db340b95094732d78b55311f2c539c1af;p=linux-2.6 [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 Signed-off-by: Al Viro --- diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 580a5389fd..496c3dd372 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;