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I have some problem here, which shows up in the ahc0 driver. It isn't where

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it originates, so I catch it here and fail.
This may expose the same bug on other disk controllers (both scsi & ide).
This commit is contained in:
phk 1996-01-01 20:20:45 +00:00
parent e61201fedd
commit d63b42b7f8
2 changed files with 14 additions and 2 deletions
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8
sys/fs/specfs/spec_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94 * @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
* $Id: spec_vnops.c,v 1.25 1995/12/13 15:13:31 julian Exp $ * $Id: spec_vnops.c,v 1.26 1995/12/14 09:53:06 phk Exp $
*/ */
#include <sys/param.h> #include <sys/param.h>
@ -756,6 +756,12 @@ spec_getpages(ap)
*/ */
blkno = (IDX_TO_OFF(ap->a_m[0]->pindex) + ap->a_offset) / DEV_BSIZE; blkno = (IDX_TO_OFF(ap->a_m[0]->pindex) + ap->a_offset) / DEV_BSIZE;
/* XXX sanity check before we go into details */
if (blkno < 0) {
printf("spec_getpages: negative blkno (%ld)\n", blkno);
return (VM_PAGER_ERROR);
}
/* /*
* Round up physical size for real devices. * Round up physical size for real devices.
*/ */

8
sys/miscfs/specfs/spec_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94 * @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
* $Id: spec_vnops.c,v 1.25 1995/12/13 15:13:31 julian Exp $ * $Id: spec_vnops.c,v 1.26 1995/12/14 09:53:06 phk Exp $
*/ */
#include <sys/param.h> #include <sys/param.h>
@ -756,6 +756,12 @@ spec_getpages(ap)
*/ */
blkno = (IDX_TO_OFF(ap->a_m[0]->pindex) + ap->a_offset) / DEV_BSIZE; blkno = (IDX_TO_OFF(ap->a_m[0]->pindex) + ap->a_offset) / DEV_BSIZE;
/* XXX sanity check before we go into details */
if (blkno < 0) {
printf("spec_getpages: negative blkno (%ld)\n", blkno);
return (VM_PAGER_ERROR);
}
/* /*
* Round up physical size for real devices. * Round up physical size for real devices.
*/ */