diff options
| author | Tim J. Robbins <tjr@FreeBSD.org> | 2004-05-11 10:26:37 +0000 |
|---|---|---|
| committer | Tim J. Robbins <tjr@FreeBSD.org> | 2004-05-11 10:26:37 +0000 |
| commit | 8eec77b09ebe63e2900c6504d656eb1451e0baa8 (patch) | |
| tree | ee058743cc36cb2a772e76e651e0a5e2b4a8a067 /sys/vm/vm_mmap.c | |
| parent | 70a9abdd457f8c371df0c12d1beeb65467c2950d (diff) | |
To handle orphaned character device vnodes properly in mmap(), check that
v_mount is non-null before dereferencing it. If it's null, behave as if
MNT_NOEXEC was not set on the mount that originally containined it.
Notes
Notes:
svn path=/head/; revision=129110
Diffstat (limited to 'sys/vm/vm_mmap.c')
| -rw-r--r-- | sys/vm/vm_mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c index 69079ea8818b..3731bf459686 100644 --- a/sys/vm/vm_mmap.c +++ b/sys/vm/vm_mmap.c @@ -320,7 +320,7 @@ mmap(td, uap) * credentials do we use for determination? What if * proc does a setuid? */ - if (vp->v_mount->mnt_flag & MNT_NOEXEC) + if (vp->v_mount != NULL && vp->v_mount->mnt_flag & MNT_NOEXEC) maxprot = VM_PROT_NONE; else maxprot = VM_PROT_EXECUTE; |