Module Name: src
Committed By: riastradh
Date: Sun Mar 13 18:37:10 UTC 2022
Modified Files:
src/sys/kern: kern_physio.c
Log Message:
kern: Use harmless, not harmful, integer truncation in physio.
Reported-by: syzbot+13abd9bc700f7ceac...@syzkaller.appspotmail.com
To generate a diff of this commit:
cvs rdiff -u -r1.99 -r1.100 src/sys/kern/kern_physio.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/kern/kern_physio.c
diff -u src/sys/kern/kern_physio.c:1.99 src/sys/kern/kern_physio.c:1.100
--- src/sys/kern/kern_physio.c:1.99 Thu Sep 16 22:19:11 2021
+++ src/sys/kern/kern_physio.c Sun Mar 13 18:37:10 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_physio.c,v 1.99 2021/09/16 22:19:11 andvar Exp $ */
+/* $NetBSD: kern_physio.c,v 1.100 2022/03/13 18:37:10 riastradh Exp $ */
/*-
* Copyright (c) 1982, 1986, 1990, 1993
@@ -71,7 +71,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_physio.c,v 1.99 2021/09/16 22:19:11 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_physio.c,v 1.100 2022/03/13 18:37:10 riastradh Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -317,7 +317,7 @@ physio(void (*strategy)(struct buf *), s
*/
bp->b_bcount = MIN(MAXPHYS, iovp->iov_len);
} else {
- bp->b_bcount = iovp->iov_len;
+ bp->b_bcount = MIN(INT_MAX, iovp->iov_len);
}
bp->b_data = iovp->iov_base;
