From: edwardsg@sgi.com (Greg Edwards)
To: linux-ia64@vger.kernel.org
Subject: [PATCH] set EXEC_PAGESIZE to PAGE_SIZE
Date: Tue, 11 May 2004 14:59:23 +0000 [thread overview]
Message-ID: <20040511145923.GC23495@sgi.com> (raw)
The number of pages allocated for the gid_t * blocks[] array in the
group_info struct is calculated from EXEC_PAGESIZE. This is used when
the number of groups goes above 32. On ia64, this is currently
hard-coded at 65536, which results in only a 1/4 of the required pages
being allocated on a 16k page size kernel. A setgroups() call with a
gidsetsize of 65536 will end up tromping on memory. Patch below sets
EXEC_PAGESIZE to PAGE_SIZE.
=== include/asm-ia64/param.h 1.6 vs edited ==--- 1.6/include/asm-ia64/param.h Wed Feb 18 21:42:38 2004
+++ edited/include/asm-ia64/param.h Tue May 11 09:04:13 2004
@@ -10,7 +10,7 @@
* David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
*/
-#define EXEC_PAGESIZE 65536
+#define EXEC_PAGESIZE PAGE_SIZE
#ifndef NOGROUP
# define NOGROUP (-1)
next reply other threads:[~2004-05-11 14:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-11 14:59 Greg Edwards [this message]
2004-05-11 16:10 ` [PATCH] set EXEC_PAGESIZE to PAGE_SIZE David Mosberger
2004-05-11 16:24 ` Andreas Schwab
2004-05-11 16:39 ` Greg Edwards
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