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| author | kib <kib@FreeBSD.org> | 2008-01-24 15:37:48 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2008-01-24 15:37:48 +0000 |
| commit | 17d99001fab69e948489158a3aa6caf948b0b996 (patch) | |
| tree | 045cb9d9e9e3618b4e3f5b44d381c0cd58069189 /sys/dev/syscons | |
| parent | 0db277677c2132cd54d285e84ef1e6c4744997cc (diff) | |
| download | FreeBSD-src-17d99001fab69e948489158a3aa6caf948b0b996.zip FreeBSD-src-17d99001fab69e948489158a3aa6caf948b0b996.tar.gz | |
Do not dereference NULL scp in the case the screen is not opened.
Instead, return ENXIO to the ioctl caller.
Reported and tested by: Pawel Worach <pawel.worach gmail com>
Discussed with: markus
MFC after: 3 days
Diffstat (limited to 'sys/dev/syscons')
| -rw-r--r-- | sys/dev/syscons/syscons.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/syscons/syscons.c b/sys/dev/syscons/syscons.c index 152e51f..677ab57 100644 --- a/sys/dev/syscons/syscons.c +++ b/sys/dev/syscons/syscons.c @@ -1071,6 +1071,8 @@ scioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) if (error) return error; scp = sc_get_stat(SC_DEV(sc, i)); + if (scp == NULL) + return (ENXIO); if (scp == scp->sc->cur_scp) return 0; error = tsleep(&scp->smode, PZERO | PCATCH, "waitvt", 0); |
