diff options
| author | Todd C. Miller <millert@cvs.openbsd.org> | 1999-01-08 04:29:12 +0000 |
|---|---|---|
| committer | Todd C. Miller <millert@cvs.openbsd.org> | 1999-01-08 04:29:12 +0000 |
| commit | 35c2bff255654ea2902e9b996e5711d755659967 (patch) | |
| tree | d3bb71382e3fd610b239be8889b28e5745ff07db /sys/arch/powerpc | |
| parent | 686c4b6f344a5a27aa0ff9967507d7d8aea15be1 (diff) | |
check for lp->d_secpercyl == 0) in bounds_check_with_label()
Diffstat (limited to 'sys/arch/powerpc')
| -rw-r--r-- | sys/arch/powerpc/powerpc/disksubr.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/arch/powerpc/powerpc/disksubr.c b/sys/arch/powerpc/powerpc/disksubr.c index 227df3182b4..f81d4f2336d 100644 --- a/sys/arch/powerpc/powerpc/disksubr.c +++ b/sys/arch/powerpc/powerpc/disksubr.c @@ -1,4 +1,4 @@ -/* $OpenBSD: disksubr.c,v 1.11 1998/10/03 21:18:56 millert Exp $ */ +/* $OpenBSD: disksubr.c,v 1.12 1999/01/08 04:29:09 millert Exp $ */ /* $NetBSD: disksubr.c,v 1.21 1996/05/03 19:42:03 christos Exp $ */ /* @@ -498,6 +498,12 @@ bounds_check_with_label(bp, lp, osdep, wlabel) LABELSECTOR; int sz = howmany(bp->b_bcount, DEV_BSIZE); + /* avoid division by zero */ + if (lp->d_secpercyl == 0) { + bp->b_error = EINVAL; + goto bad; + } + if (bp->b_blkno + sz > blockpersec(p->p_size, lp)) { sz = blockpersec(p->p_size, lp) - bp->b_blkno; if (sz == 0) { |