Re: [syzbot] Re: [syzbot] [net?] possible deadlock in team_device_event (3)

[syzbot <syzbot+b668da2bc4cb9670bf58@syzkaller.appspotmail.com>]

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Subject: Re: [syzbot] [net?] possible deadlock in team_device_event (3)
Author: aha310510@gmail.com

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

---
 drivers/net/team/team_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/team/team_core.c b/drivers/net/team/team_core.c
index ab1935a4aa2c..056889eff6b1 100644
--- a/drivers/net/team/team_core.c
+++ b/drivers/net/team/team_core.c
@@ -2947,7 +2947,7 @@ static void team_port_change_check(struct team_port *port, bool linkup)
 {
 	struct team *team = port->team;
 
-	mutex_lock(&team->lock);
+	mutex_lock_nested(&team->lock, 1);
 	__team_port_change_check(port, linkup);
 	mutex_unlock(&team->lock);
 }
--