linux-kernel - Re: [syzbot] [net?] INFO: task hung in new_device

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Message-ID: <051966f4-da73-4855-9f41-b41fd045bf2a@I-love.SAKURA.ne.jp>
Date: Tue, 30 Dec 2025 22:24:18 +0900
From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To: syzbot <syzbot+05f9cecd28e356241aba@...kaller.appspotmail.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [net?] INFO: task hung in new_device_store (5)

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 2d4c5bab5af8..13b7a921cc3a 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -792,12 +792,6 @@ static void lockdep_print_held_locks(struct task_struct *p)
 	else
 		printk("%d lock%s held by %s/%d:\n", depth,
 		       str_plural(depth), p->comm, task_pid_nr(p));
-	/*
-	 * It's not reliable to print a task's held locks if it's not sleeping
-	 * and it's not the current task.
-	 */
-	if (p != current && task_is_running(p))
-		return;
 	for (i = 0; i < depth; i++) {
 		printk(" #%d: ", i);
 		print_lock(p->held_locks + i);
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 58d22e2b85fc..5c4df843b177 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -995,9 +995,6 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 	if (likely(fdb)) {
 		/* attempt to update an entry for a local interface */
 		if (unlikely(test_bit(BR_FDB_LOCAL, &fdb->flags))) {
-			if (net_ratelimit())
-				br_warn(br, "received packet on %s with own address as source address (addr:%pM, vlan:%u)\n",
-					source->dev->name, addr, vid);
 		} else {
 			unsigned long now = jiffies;
 			bool fdb_modified = false;