diff options
| author | tjr <tjr@FreeBSD.org> | 2004-05-11 10:26:37 +0000 |
|---|---|---|
| committer | tjr <tjr@FreeBSD.org> | 2004-05-11 10:26:37 +0000 |
| commit | a87b9baadb4b8eea53204f4c09ef0f80885a15f1 (patch) | |
| tree | ee058743cc36cb2a772e76e651e0a5e2b4a8a067 /sys/vm | |
| parent | 23826bb4100062044395517612bce82de92d3ebf (diff) | |
| download | FreeBSD-src-a87b9baadb4b8eea53204f4c09ef0f80885a15f1.zip FreeBSD-src-a87b9baadb4b8eea53204f4c09ef0f80885a15f1.tar.gz | |
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.
Diffstat (limited to 'sys/vm')
| -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 69079ea..3731bf4 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; |
