** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1808097
Title:
Console got stuck using serial tty after logout
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Released
Status in linux source package in Cosmic:
Fix Released
Bug description:
[Impact]
The agetty stopped working using serial tty when user logged out, especially
if there is a remained process. The agetty failed to open tty device due to
serial port used by previous process was not released.
[Test Case]
1. Run background processes from serial console
$ while true; do sleep 10; done &
2. Log out
$ logout
3. Read journal log by journalctl | tail
Jan 28 16:07:01 ubuntu systemd[1]: Stopped Serial Getty on ttyAMA0.
Jan 28 16:07:01 ubuntu systemd[1]: Started Serial Getty on ttyAMA0.
Jan 28 16:07:02 ubuntu agetty[1643]: /dev/ttyAMA0: not a tty
[Fix]
The upstream has a fix since 4.20-rc6, which turns off TTY_IO_ERROR flag if
port comes from console. The commit is cherry-picked by
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/tty/tty_port.c?h=v4.20-rc6&id=2a48602615e0a2f563549c7d5c8d507f904cf96e
[Regression Potential]
Should be none, and it's regression becoz 4.4 kernel didn't have this case.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1808097/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
