author: Mike Rapoport <rppt@linux.vnet.ibm.com> 2018-08-02 15:36:09 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2018-08-02 16:03:40 -0700
commit: 31e810aa1033a7db50a2746cd34a2432237f6420
parent: eec3636ad198d4ac61e574cb122cb67e9bef5492
Commit Summary:
Diffstat:
1 file changed, 3 insertions, 1 deletion
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 594d192b2331..bad9cea37f12 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -633,8 +633,10 @@ static void userfaultfd_event_wait_completion(struct userfaultfd_ctx *ctx,
/* the various vma->vm_userfaultfd_ctx still points to it */
down_write(&mm->mmap_sem);
for (vma = mm->mmap; vma; vma = vma->vm_next)
- if (vma->vm_userfaultfd_ctx.ctx == release_new_ctx)
+ if (vma->vm_userfaultfd_ctx.ctx == release_new_ctx) {
vma->vm_userfaultfd_ctx = NULL_VM_UFFD_CTX;
+ vma->vm_flags &= ~(VM_UFFD_WP | VM_UFFD_MISSING);
+ }
up_write(&mm->mmap_sem);
userfaultfd_ctx_put(release_new_ctx);