Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

more extent_alloc() fixes:

Browse Source 
check that newstart + size - 1 doesn't overflow the end of the extent, rather
than the "dontcross" value, which can easily overflow the end of an extent
when being asked for an object with a large boundary requirement.  this test
is more valid, in any case, and fixes extent_alloc() failure when the start of
the extent is not "aligned".
This commit is contained in:
mrg 2000-07-07 14:10:48 +00:00
parent 136e84eb05
commit 4384010332
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sys/kern/subr_extent.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: subr_extent.c,v 1.35 2000/06/27 17:41:33 mrg Exp $ */
/* $NetBSD: subr_extent.c,v 1.36 2000/07/07 14:10:48 mrg Exp $ */
/*-
* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
@ -694,7 +694,7 @@ extent_alloc_subregion1(ex, substart, subend, size, alignment, skew, boundary,
* overflows, then the request
* can't fit.
*/
if (dontcross > ex->ex_end ||
if (newstart + size - 1 > ex->ex_end ||
dontcross < newstart)
goto fail;
}
@ -788,7 +788,7 @@ extent_alloc_subregion1(ex, substart, subend, size, alignment, skew, boundary,
* overflows, then the request
* can't fit.
*/
if (dontcross > ex->ex_end ||
if (newstart + size - 1 > ex->ex_end ||
dontcross < newstart)
goto fail;
}