APPLIED[XBF]: [SRU][X][B][F][G][PATCH 0/1] Don't NULL tty->driver_data until hvcs_cleanup() (LP: 1892546)

[Kelsey Skunberg]

Applied to master-next for xenial, bionic, and focal. thank you! 

-Kelsey

On 2020-09-15 15:56:48 , patricia.domingues at canonical.com wrote:
> BugLink: https://bugs.launchpad.net/bugs/1892546
> 
> SRU Justification:
> 
> [Impact]
> * drmgr command is failing while trying to open console for IBMi on PowerVM LPAR
> 
> [Fix]
> * 63ffcbdad738 "tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()"
> 
> [Test Case]
> * Create a VM from PowerVC on a Novalink managed host. 
> * Unmanage and manage the VM, this problem gets reproduced.
> * grep the logs for "drmgr"
> 
> 
> [Regression Potential]
> The regression can be considered as very low, since:
> * limited to the IBM Hypervisor Virtual Console Server.
> * patched kernel where shared and successfully tested by IBM.
> * the worse case, if the cleanup is broken a new opened connection might break.
> 
> [Other]
> * The patch got upstream accepted.
> 
> 
> Tyrel Datwyler (1):
>   tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()
> 
>  drivers/tty/hvc/hvcs.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> -- 
> 2.17.1
> 
> 
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