[PATCH 0/1][SRU][D] Fix regression in /proc/pid/maps
seth.forshee at canonical.com
Tue Sep 24 20:55:50 UTC 2019
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
Regression Potential: This reverts to the previous (working) behavior.
Mounting overlayfs over shiftfs will not work until a fixed patch is
A revert has already been applied to eoan, now sending for SRU to disco.
Seth Forshee (1):
UBUNTU: SAUCE: Revert "UBUNTU: SAUCE: shiftfs: enable overlayfs on
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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