Module Name: src
Committed By: riastradh
Date: Sat Mar 12 17:07:10 UTC 2022
Modified Files:
src/sys/dev/pad: pad.c
Log Message:
pad(4): Do harmless, not harmful, integer truncation.
Reported-by: syzbot+917ff3551897f1a99...@syzkaller.appspotmail.com
To generate a diff of this commit:
cvs rdiff -u -r1.75 -r1.76 src/sys/dev/pad/pad.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/pad/pad.c
diff -u src/sys/dev/pad/pad.c:1.75 src/sys/dev/pad/pad.c:1.76
--- src/sys/dev/pad/pad.c:1.75 Mon Jun 14 18:44:53 2021
+++ src/sys/dev/pad/pad.c Sat Mar 12 17:07:10 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: pad.c,v 1.75 2021/06/14 18:44:53 riastradh Exp $ */
+/* $NetBSD: pad.c,v 1.76 2022/03/12 17:07:10 riastradh Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <jmcne...@invisible.ca>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.75 2021/06/14 18:44:53 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.76 2022/03/12 17:07:10 riastradh Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -506,7 +506,7 @@ pad_read(struct pad_softc *sc, off_t *of
DPRINTF("%s: resid=%zu\n", __func__, uio->uio_resid);
while (uio->uio_resid > 0) {
mutex_enter(&sc->sc_intr_lock);
- err = pad_get_block(sc, &pb, uio->uio_resid);
+ err = pad_get_block(sc, &pb, MIN(uio->uio_resid, INT_MAX));
mutex_exit(&sc->sc_intr_lock);
if (err)
break;
