linux-kernel - Re: [PATCH 09/11] bluetooth: hci

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:	Thu, 20 Mar 2014 12:40:40 -0700
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Felipe Balbi <balbi@...com>
Cc:	Greg KH <gregkh@...uxfoundation.org>, linux-serial@...r.kernel.org,
	linux-bluetooth@...r.kernel.org,
	Peter Hurley <peter@...leysoftware.com>, m-karicheri2@...com,
	b32955@...escale.com,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 09/11] bluetooth: hci_ldisc: fix deadlock condition

Hi Felipe,

> LDISCs shouldn't call tty->ops->write() from within
> ->write_wakeup().
> 
> ->write_wakeup() is called with port lock taken and
> IRQs disabled, tty->ops->write() will try to acquire
> the same port lock and we will deadlock.
> 
> Reviewed-by: Peter Hurley <peter@...leysoftware.com>
> Reported-by: Huang Shijie <b32955@...escale.com>
> Signed-off-by: Felipe Balbi <balbi@...com>
> ---
> drivers/bluetooth/hci_ldisc.c | 24 +++++++++++++++++++-----
> drivers/bluetooth/hci_uart.h  |  1 +
> 2 files changed, 20 insertions(+), 5 deletions(-)

I hope these are not causing any conflicts with bluetooth-next / linux-next. If not, then I can let Greg take it through tty-next tree.

Acked-by: Marcel Holtmann <marcel@...tmann.org>

Regards

Marcel

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/