diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-01-31 10:09:37 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-01-31 10:09:37 +0000 |
| commit | 5b53660f595b186a372cadf5cb50116a8dd4d673 (patch) | |
| tree | 7aa8932e8027ed6b8a49b80a1a81b4659b334577 /usr.bin/systat | |
| parent | 2b897bc1ccb5c583301ab0b986d893b728c7b65f (diff) | |
stop crash from walking off end of malloc'd page. i hunted this bug before
and didn't find it. fix from paul@wit387304.student.utwente.nl
Diffstat (limited to 'usr.bin/systat')
| -rw-r--r-- | usr.bin/systat/swap.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/usr.bin/systat/swap.c b/usr.bin/systat/swap.c index ad91e7d0e1b..7b9b01f85ef 100644 --- a/usr.bin/systat/swap.c +++ b/usr.bin/systat/swap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: swap.c,v 1.6 1996/08/06 18:49:05 deraadt Exp $ */ +/* $OpenBSD: swap.c,v 1.7 1997/01/31 10:09:36 deraadt Exp $ */ /* $NetBSD: swap.c,v 1.5 1996/05/10 23:16:38 thorpej Exp $ */ /*- @@ -38,7 +38,7 @@ #if 0 static char sccsid[] = "@(#)swap.c 8.3 (Berkeley) 4/29/95"; #endif -static char rcsid[] = "$OpenBSD: swap.c,v 1.6 1996/08/06 18:49:05 deraadt Exp $"; +static char rcsid[] = "$OpenBSD: swap.c,v 1.7 1997/01/31 10:09:36 deraadt Exp $"; #endif /* not lint */ /* @@ -85,7 +85,7 @@ static int nswap, nswdev, dmmax, nswapmap; static struct swdevt *sw; static long *perdev, blocksize; static struct map *swapmap, *kswapmap; -static struct mapent *mp; +static struct mapent *mpp; static int nfree, hlen; #define SVAR(var) __STRING(var) /* to force expansion */ @@ -145,7 +145,7 @@ initswap() KGET(VM_SWAPMAP, kswapmap); /* kernel `swapmap' is a pointer */ if ((sw = malloc(nswdev * sizeof(*sw))) == NULL || (perdev = malloc(nswdev * sizeof(*perdev))) == NULL || - (mp = malloc(nswapmap * sizeof(*mp))) == NULL) { + (mpp = malloc(nswapmap * sizeof(*mpp))) == NULL) { error("swap malloc"); return (0); } @@ -157,9 +157,11 @@ initswap() void fetchswap() { + struct mapent *mp; int s, e, i; - s = nswapmap * sizeof(*mp); + s = nswapmap * sizeof(*mpp); + mp = mpp; if (kvm_read(kd, (long)kswapmap, mp, s) != s) error("cannot read swapmap: %s", kvm_geterr(kd)); |