Yama: use atomic allocations when reporting

Access reporting often happens from atomic contexes. Avoid
lockups when allocating memory for command lines.

Fixes: 8a56038c2ae ("Yama: consolidate error reporting")
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index c19f6e5df9a38302335003b0fbac99f338e3235e..9b756b1f3dc5241cc11eb8ccb3755e0bd126b3c8 100644 (file)
--- 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",