Messages in this thread Patch in this message | | | Date | Fri, 01 Aug 2008 19:15:47 +0800 | From | zhangxiliang <> | Subject | [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> --- kernel/auditsc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 4699950..012c94e 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;
| |