[RFC PATCH v2 0/2] Fix uprobe anon page be overwritten during mremap

Pu Lehui posted 2 patches 10 months, 3 weeks ago
mm/mremap.c | 2 ++
mm/vma.c    | 7 ++++++-
mm/vma.h    | 7 +++++++
3 files changed, 15 insertions(+), 1 deletion(-)
[RFC PATCH v2 0/2] Fix uprobe anon page be overwritten during mremap
Posted by Pu Lehui 10 months, 3 weeks ago
From: Pu Lehui <pulehui@huawei.com>

patch 1: the mainly fix for uprobe anon page be overwritten issue.
patch 2: WARN_ON_ONCE for new_pte not NULL during move_ptes.

RFC v2:
- skip uprobe_mmap on expanded vma.
- add skip_vma_uprobe field to struct vma_prepare and
  vma_merge_struct. (Lorenzo)
- add WARN_ON_ONCE when new_pte is not NULL. (Oleg)
- Corrected some of the comments.

RFC v1:
https://lore.kernel.org/all/20250521092503.3116340-1-pulehui@huaweicloud.com/

Pu Lehui (2):
  mm/mremap: Fix uprobe anon page be overwritten when expanding vma
    during mremap
  mm/mremap: Expose abnormal new_pte during move_ptes

 mm/mremap.c | 2 ++
 mm/vma.c    | 7 ++++++-
 mm/vma.h    | 7 +++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

-- 
2.34.1