linux-kernel - [PATCH v6.6 04/26] af_unix: Replace BUG_ON() with WARN_ON

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Message-ID: <20250521144803.2050504-5-lee@kernel.org>
Date: Wed, 21 May 2025 14:45:12 +0000
From: Lee Jones <lee@...nel.org>
To: lee@...nel.org,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Kuniyuki Iwashima <kuniyu@...zon.com>,
	Jens Axboe <axboe@...nel.dk>,
	Sasha Levin <sashal@...nel.org>,
	Michal Luczaj <mhal@...x.co>,
	Rao Shoaib <Rao.Shoaib@...cle.com>,
	Simon Horman <horms@...nel.org>,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Cc: stable@...r.kernel.org
Subject: [PATCH v6.6 04/26] af_unix: Replace BUG_ON() with WARN_ON_ONCE().

From: Kuniyuki Iwashima <kuniyu@...zon.com>

[ Upstream commit d0f6dc26346863e1f4a23117f5468614e54df064 ]

This is a prep patch for the last patch in this series so that
checkpatch will not warn about BUG_ON().

Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
Acked-by: Jens Axboe <axboe@...nel.dk>
Link: https://lore.kernel.org/r/20240129190435.57228-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
(cherry picked from commit d0f6dc26346863e1f4a23117f5468614e54df064)
Signed-off-by: Lee Jones <lee@...nel.org>
---
 net/unix/garbage.c | 8 ++++----
 net/unix/scm.c     | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/net/unix/garbage.c b/net/unix/garbage.c
index 96cc6b7674333..b4bf7f7538826 100644
--- a/net/unix/garbage.c
+++ b/net/unix/garbage.c
@@ -145,7 +145,7 @@ static void scan_children(struct sock *x, void (*func)(struct unix_sock *),
 			/* An embryo cannot be in-flight, so it's safe
 			 * to use the list link.
 			 */
-			BUG_ON(!list_empty(&u->link));
+			WARN_ON_ONCE(!list_empty(&u->link));
 			list_add_tail(&u->link, &embryos);
 		}
 		spin_unlock(&x->sk_receive_queue.lock);
@@ -224,8 +224,8 @@ static void __unix_gc(struct work_struct *work)
 
 		total_refs = file_count(sk->sk_socket->file);
 
-		BUG_ON(!u->inflight);
-		BUG_ON(total_refs < u->inflight);
+		WARN_ON_ONCE(!u->inflight);
+		WARN_ON_ONCE(total_refs < u->inflight);
 		if (total_refs == u->inflight) {
 			list_move_tail(&u->link, &gc_candidates);
 			__set_bit(UNIX_GC_CANDIDATE, &u->gc_flags);
@@ -318,7 +318,7 @@ static void __unix_gc(struct work_struct *work)
 		list_move_tail(&u->link, &gc_inflight_list);
 
 	/* All candidates should have been detached by now. */
-	BUG_ON(!list_empty(&gc_candidates));
+	WARN_ON_ONCE(!list_empty(&gc_candidates));
 
 	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
 	WRITE_ONCE(gc_in_progress, false);
diff --git a/net/unix/scm.c b/net/unix/scm.c
index b5ae5ab167773..505e56cf02a21 100644
--- a/net/unix/scm.c
+++ b/net/unix/scm.c
@@ -51,10 +51,10 @@ void unix_inflight(struct user_struct *user, struct file *fp)
 
 	if (u) {
 		if (!u->inflight) {
-			BUG_ON(!list_empty(&u->link));
+			WARN_ON_ONCE(!list_empty(&u->link));
 			list_add_tail(&u->link, &gc_inflight_list);
 		} else {
-			BUG_ON(list_empty(&u->link));
+			WARN_ON_ONCE(list_empty(&u->link));
 		}
 		u->inflight++;
 		/* Paired with READ_ONCE() in wait_for_unix_gc() */
@@ -71,8 +71,8 @@ void unix_notinflight(struct user_struct *user, struct file *fp)
 	spin_lock(&unix_gc_lock);
 
 	if (u) {
-		BUG_ON(!u->inflight);
-		BUG_ON(list_empty(&u->link));
+		WARN_ON_ONCE(!u->inflight);
+		WARN_ON_ONCE(list_empty(&u->link));
 
 		u->inflight--;
 		if (!u->inflight)
-- 
2.49.0.1112.g889b7c5bd8-goog