From: Jakub Kicinski <kuba@kernel.org>
To: Jeongjun Park <aha310510@gmail.com>
Cc: davem@davemloft.net, edumazet@google.com, pabeni@redhat.com,
razor@blackwall.org, agospoda@redhat.com,
syzbot+113b65786d8662e21ff7@syzkaller.appspotmail.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [PATCH net] net: Fix data race around dev->flags in netif_is_bond_master
Date: Mon, 29 Jul 2024 07:41:32 -0700 [thread overview]
Message-ID: <20240729074132.6edec347@kernel.org> (raw)
In-Reply-To: <20240728105429.2223-1-aha310510@gmail.com>
On Sun, 28 Jul 2024 19:54:29 +0900 Jeongjun Park wrote:
> According to KCSAN report, there is a read/write race between
> __dev_change_flags and netif_is_bond_master for dev->flags. Therefore,
> should change to use READ_ONCE() when reading dev->flags.
That will certainly silence the warning, but doesn't prove the change
is correct.
--
pw-bot: cr
prev parent reply other threads:[~2024-07-29 14:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-04 15:07 [syzbot] [net?] KCSAN: data-race in __dev_change_flags / is_upper_ndev_bond_master_filter (9) syzbot
2024-07-04 15:10 ` Dmitry Vyukov
2024-07-28 10:54 ` [PATCH net] net: Fix data race around dev->flags in netif_is_bond_master Jeongjun Park
2024-07-29 14:41 ` Jakub Kicinski [this message]
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