[PATCH OLK-6.6 0/4] Fix CVE-2026-64378

Fix CVE-2026-64378 Baokun Li (2): writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs() writeback: drop now-unnecessary rcu_barrier() in cgroup_writeback_umount() Jan Kara (2): writeback: Avoid contention on wb->list_lock when switching inodes writeback: Fix use after free in inode_switch_wbs_work_fn() fs/fs-writeback.c | 133 +++++++++++++++++++++---------- include/linux/backing-dev-defs.h | 4 + include/linux/writeback.h | 2 + mm/backing-dev.c | 5 ++ 4 files changed, 103 insertions(+), 41 deletions(-) -- 2.52.0