From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Tony Lindgren <tony@atomide.com>
Cc: kernel test robot <oliver.sang@intel.com>,
Yicong Yang <yangyicong@hisilicon.com>,
oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable <stable@kernel.org>,
linux-serial@vger.kernel.org
Subject: Re: [linus:master] [serial] 43066e3222: BUG:kernel_NULL_pointer_dereference,address
Date: Thu, 4 Apr 2024 14:59:19 +0300 [thread overview]
Message-ID: <Zg6WF0DMePE-V1V0@smile.fi.intel.com> (raw)
In-Reply-To: <20240404065415.GO5132@atomide.com>
On Thu, Apr 04, 2024 at 09:54:15AM +0300, Tony Lindgren wrote:
> * Andy Shevchenko <andriy.shevchenko@linux.intel.com> [240403 14:00]:
> > Probably we need to check if the port is still open...
> >
> > P.S. AFAIU the state / xmit is invalid pointer or so.
> >
> > Culprit line: serial_out(up, UART_TX, xmit->buf[xmit->tail]);
xmit.buf seems to be NULL, that's why this fails.
> Maybe we can set UPF_DEAD a bit earlier as below?
Lemme perform some tests later today.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2024-04-04 11:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-03 13:43 [linus:master] [serial] 43066e3222: BUG:kernel_NULL_pointer_dereference,address kernel test robot
2024-04-03 14:00 ` Andy Shevchenko
2024-04-04 6:54 ` Tony Lindgren
2024-04-04 11:59 ` Andy Shevchenko [this message]
2024-04-04 14:42 ` Andy Shevchenko
2024-04-04 14:34 ` Andy Shevchenko
2024-04-05 5:46 ` Tony Lindgren
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