Yama: use atomic allocations when reporting

Access reporting often happens from atomic contexes. Avoid lockups when allocating memory for command lines. Fixes: 8a56038 ("Yama: consolidate error reporting") Signed-off-by: Sasha Levin <[email protected]>
tdeneau · May 4, 2016 · 74f430c · 74f430c
1 parent 470bf1f
commit 74f430c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
@@ -47,8 +47,8 @@ static void report_access(const char *access, struct task_struct *target,
 {
 	char *target_cmd, *agent_cmd;
 
-	target_cmd = kstrdup_quotable_cmdline(target, GFP_KERNEL);
-	agent_cmd = kstrdup_quotable_cmdline(agent, GFP_KERNEL);
+	target_cmd = kstrdup_quotable_cmdline(target, GFP_ATOMIC);
+	agent_cmd = kstrdup_quotable_cmdline(agent, GFP_ATOMIC);
 
 	pr_notice_ratelimited(
 		"ptrace %s of \"%s\"[%d] was attempted by \"%s\"[%d]\n",