diff options
| author | Andrea Arcangeli <[email protected]> | 2018-12-14 14:17:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-12-14 15:05:45 -0800 |
| commit | 01e881f5a1fca4677e82733061868c6d6ea05ca7 (patch) | |
| tree | 104ce9922663f88b905b14ecacc2c710367b48a9 /security/selinux/hooks.c | |
| parent | 61c6de667263184125d5ca75e894fcad632b0dd3 (diff) | |
userfaultfd: check VM_MAYWRITE was set after verifying the uffd is registered
Calling UFFDIO_UNREGISTER on virtual ranges not yet registered in uffd
could trigger an harmless false positive WARN_ON. Check the vma is
already registered before checking VM_MAYWRITE to shut off the false
positive warning.
Link: http://lkml.kernel.org/r/[email protected]
Cc: <[email protected]>
Fixes: 29ec90660d68 ("userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas")
Signed-off-by: Andrea Arcangeli <[email protected]>
Reported-by: [email protected]
Acked-by: Mike Rapoport <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Acked-by: Peter Xu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'security/selinux/hooks.c')
0 files changed, 0 insertions, 0 deletions