diff options
| author |   deraadt <deraadt@openbsd.org> | 1996-09-02 05:25:06 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 1996-09-02 05:25:06 +0000 |
| commit | e9684b56c14b7d71bde036006cf0d52db044afdf (patch) | |
| tree | 9dd8874720c0f7a9e854d67c77a8b9778372be40 /sys/kern/sysv_shm.c | |
| parent | perturb xid further. confuse the world (diff) | |
| download | wireguard-openbsd-e9684b56c14b7d71bde036006cf0d52db044afdf.tar.xz wireguard-openbsd-e9684b56c14b7d71bde036006cf0d52db044afdf.zip | |
shmdt when no mapping is ok, found by christos
Diffstat (limited to 'sys/kern/sysv_shm.c')
| -rw-r--r-- | sys/kern/sysv_shm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/kern/sysv_shm.c b/sys/kern/sysv_shm.c index ae4cae35341..f31f05f5ef0 100644 --- a/sys/kern/sysv_shm.c +++ b/sys/kern/sysv_shm.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sysv_shm.c,v 1.4 1996/04/21 22:27:26 deraadt Exp $ */ +/* $OpenBSD: sysv_shm.c,v 1.5 1996/09/02 05:25:06 deraadt Exp $ */ /* $NetBSD: sysv_shm.c,v 1.37 1996/03/16 23:17:13 christos Exp $ */ /* @@ -178,6 +178,8 @@ sys_shmdt(p, v, retval) int i; shmmap_s = (struct shmmap_state *)p->p_vmspace->vm_shm; + if (shmmap_s == NULL) + return EINVAL; for (i = 0; i < shminfo.shmseg; i++, shmmap_s++) if (shmmap_s->shmid != -1 && shmmap_s->va == (vm_offset_t)SCARG(uap, shmaddr)) |