linux-kernel - [PATCH] seccomp: remove unnecessary unlikely()

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Message-Id: <20180905203443.32289-1-igor.stoppa@huawei.com>
Date:   Wed,  5 Sep 2018 23:34:43 +0300
From:   Igor Stoppa <igor.stoppa@...il.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     igor.stoppa@...il.com, Igor Stoppa <igor.stoppa@...wei.com>,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] seccomp: remove unnecessary unlikely()

WARN_ON() already contains an unlikely(), so it's not necessary to wrap it
into another.

Signed-off-by: Igor Stoppa <igor.stoppa@...wei.com>
Acked-by: Kees Cook <keescook@...omium.org>
Cc: linux-security-module@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 kernel/seccomp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index fd023ac24e10..5a2a9af4663e 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -195,7 +195,7 @@ static u32 seccomp_run_filters(const struct seccomp_data *sd,
 			READ_ONCE(current->seccomp.filter);
 
 	/* Ensure unexpected behavior doesn't result in failing open. */
-	if (unlikely(WARN_ON(f == NULL)))
+	if (WARN_ON(f == NULL))
 		return SECCOMP_RET_KILL_PROCESS;
 
 	if (!sd) {
@@ -297,7 +297,7 @@ static inline pid_t seccomp_can_sync_threads(void)
 		/* Return the first thread that cannot be synchronized. */
 		failed = task_pid_vnr(thread);
 		/* If the pid cannot be resolved, then return -ESRCH */
-		if (unlikely(WARN_ON(failed == 0)))
+		if (WARN_ON(failed == 0))
 			failed = -ESRCH;
 		return failed;
 	}
-- 
2.17.1