APPLIED: [PATCH 0/1][SRU][D] Fix regression in /proc/pid/maps

[Khaled Elmously]

On 2019-09-24 15:55:50 , Seth Forshee wrote:
> BugLink: https://bugs.launchpad.net/bugs/1842382
> 
> SRU Justification
> 
> Impact: A patch to enable mounting overlayfs over shiftfs introduced a
> regression in /proc/pid/maps when a proc mount over an overlayfs mount
> is accessed from within a chroot. All paths within the file are /
> instead of paths to the files backing memory-mapped regions. This is
> causing issues in several different configurations.
> 
> Fix: Revert the offending patch.
> 
> Test Case: A simple reproducer can be found attached to the bug in
> lp1842382.sh.
> 
> Regression Potential: This reverts to the previous (working) behavior.
> Mounting overlayfs over shiftfs will not work until a fixed patch is
> applied.
> 
> A revert has already been applied to eoan, now sending for SRU to disco.
> 
> Thanks,
> Seth
> 
> 
> Seth Forshee (1):
>   UBUNTU: SAUCE: Revert "UBUNTU: SAUCE: shiftfs: enable overlayfs on
>     shiftfs"
> 
>  fs/open.c            | 4 +---
>  fs/overlayfs/file.c  | 1 -
>  fs/overlayfs/super.c | 5 ++---
>  fs/shiftfs.c         | 4 +---
>  include/linux/fs.h   | 3 +--
>  5 files changed, 5 insertions(+), 12 deletions(-)
> 
> 
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