From: Dan Carpenter <dan.carpenter@oracle.com>
To: Hawkins Jiawei <yin31149@gmail.com>
Cc: David Howells <dhowells@redhat.com>,
Marc Dionne <marc.dionne@auristor.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
linux-afs@lists.infradead.org,
linux-kernel-mentees@lists.linuxfoundation.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
paskripkin@gmail.com,
syzbot+7f0483225d0c94cb3441@syzkaller.appspotmail.com,
syzkaller-bugs@googlegroups.com
Subject: Re: [PATCH] rxrpc: fix bad unlock balance in rxrpc_do_sendmsg
Date: Mon, 22 Aug 2022 16:44:43 +0300 [thread overview]
Message-ID: <20220822134443.GE2695@kadam> (raw)
In-Reply-To: <20220822130414.28489-1-yin31149@gmail.com>
On Mon, Aug 22, 2022 at 09:04:14PM +0800, Hawkins Jiawei wrote:
> static int rxrpc_send_data(struct rxrpc_sock *rx,
> struct rxrpc_call *call,
> struct msghdr *msg, size_t len,
> - rxrpc_notify_end_tx_t notify_end_tx)
> + rxrpc_notify_end_tx_t notify_end_tx,
> + bool *holding_mutex)
> {
> struct rxrpc_skb_priv *sp;
> struct sk_buff *skb;
> @@ -299,6 +318,13 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
> bool more;
> int ret, copied;
>
> + /*
> + * The caller holds the call->user_mutex when calls
> + * rxrpc_send_data(), so initial it with True
> + */
> + if (holding_mutex)
> + *holding_mutex = true;
Don't make this optional. All callers have to care if we dropped the
lock.
regards,
dan carpenter
next prev parent reply other threads:[~2022-08-22 13:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 10:37 [syzbot] WARNING: bad unlock balance in rxrpc_do_sendmsg syzbot
2022-08-21 12:57 ` [PATCH] rxrpc: fix " Hawkins Jiawei
2022-08-21 15:58 ` Khalid Masum
2022-08-21 16:42 ` Khalid Masum
2022-08-22 5:19 ` Hawkins Jiawei
2022-08-21 19:17 ` [syzbot] WARNING: " Khalid Masum
2022-08-21 22:29 ` syzbot
2022-08-22 8:48 ` [PATCH] rxrpc: fix " David Howells
2022-08-22 9:21 ` David Howells
2022-08-22 11:29 ` Hawkins Jiawei
2022-08-22 11:29 ` Hawkins Jiawei
2022-08-22 13:04 ` Hawkins Jiawei
2022-08-22 13:44 ` Dan Carpenter [this message]
2022-08-22 13:55 ` Khalid Masum
2022-08-22 14:05 ` Dan Carpenter
2022-08-22 15:39 ` Hawkins Jiawei
2022-08-22 16:00 ` Khalid Masum
2022-08-22 14:24 ` [syzbot] WARNING: " David Howells
2022-08-22 15:45 ` David Howells
2022-08-22 16:23 ` syzbot
2022-08-24 16:30 ` Marc Dionne
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