From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Corey Minyard <cminyard@mvista.com>,
Mark Brown <broonie@kernel.org>, Takashi Iwai <tiwai@suse.de>
Subject: regression with TTY changes in v5.12-rc1
Date: Thu, 4 Mar 2021 08:37:44 -0600 [thread overview]
Message-ID: <00154592-c5ee-aaba-956e-b265473b53bc@linux.intel.com> (raw)
Hi,
Our SOF/audio CI shows an across-the-board regression when we try
v5.12-rc1, specifically on pause/resume tests with an interactive
terminal running 'aplay -i' commands managed by expect to simulate the
user pressing the space bar to pause/unpause. It turns out the processes
are not longer killed and the audio devices remain busy (see publicly
available test results listed below).
git bisect points to commit 33d4ae9885987 ("drivers:tty:pty: Fix a race
causing data loss on close"). Reverting the patch fixes the issue on all
test devices.
Further analysis with Corey Minyard points to a problem where a slave
tty will not get a SIGHUP when the master is closed.
Unless there is an alternate fix, a revert looks necessary?
Regards
-Pierre
https://github.com/thesofproject/linux/pull/2772
https://sof-ci.01.org/linuxpr/PR2772/build5352/devicetest/
next reply other threads:[~2021-03-04 14:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-04 14:37 Pierre-Louis Bossart [this message]
2021-03-04 16:20 ` regression with TTY changes in v5.12-rc1 Greg Kroah-Hartman
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