netdev - [PATCH net-next 1/3] mctp: serial: cancel tx work on ldisc close

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 23 Nov 2021 20:50:40 +0800
From:   Jeremy Kerr <jk@...econstruct.com.au>
To:     netdev@...r.kernel.org
Cc:     Jiri Slaby <jirislaby@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matt Johnston <matt@...econstruct.com.au>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 1/3] mctp: serial: cancel tx work on ldisc close

We want to ensure that the tx work has finished before returning from
the ldisc close op, so do a synchronous cancel.

Reported-by: Jiri Slaby <jirislaby@...nel.org>
Signed-off-by: Jeremy Kerr <jk@...econstruct.com.au>
---
 drivers/net/mctp/mctp-serial.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/mctp/mctp-serial.c b/drivers/net/mctp/mctp-serial.c
index 9ac0e187f36e..c958d773a82a 100644
--- a/drivers/net/mctp/mctp-serial.c
+++ b/drivers/net/mctp/mctp-serial.c
@@ -478,6 +478,7 @@ static void mctp_serial_close(struct tty_struct *tty)
 	struct mctp_serial *dev = tty->disc_data;
 	int idx = dev->idx;
 
+	cancel_work_sync(&dev->tx_work);
 	unregister_netdev(dev->netdev);
 	ida_free(&mctp_serial_ida, idx);
 }
-- 
2.33.0