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]
Message-ID: <20231005141702.kcIBmUiU@linutronix.de>
Date:   Thu, 5 Oct 2023 16:17:02 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Pierre Gondois <pierre.gondois@....com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v6.6-rc4-rt7

On 2023-10-05 15:38:06 [+0200], Pierre Gondois wrote:
> Hello Sebastian,
Hi Pierre,

> The following happened once [1]. In pl011_console_write() from:
>   commit da042bbb7a3f ("printk: Update the printk series.")
> &uap->port seems to be released, but various paths don't seem
> to acquire the lock,

Thank you for the report.
The following cures it:

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 96da994e5af06..c6c2d3e46a8ec 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2335,7 +2335,7 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
 	if (uap->port.sysrq || oops_in_progress)
 		locked = uart_port_trylock_irqsave(&uap->port, &flags);
 	else
-		uart_port_trylock_irqsave(&uap->port, &flags);
+		uart_port_lock_irqsave(&uap->port, &flags);
 
 	/*
 	 *	First save the CR then disable the interrupts

> Regards,
> Pierre

Sebastian

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ