From: Bjorn Helgaas <bjorn_helgaas@hp.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] null pointer dereference patch
Date: Tue, 12 Feb 2002 21:51:22 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590698806040@msgid-missing> (raw)
Without the attached patch, unaligned references before
init_modules() is called result in null pointer dereferences.
This is against 2.4.17-ia64-011226.
--
Bjorn Helgaas - bjorn_helgaas@hp.com
Linux Systems Operation R&D
Hewlett-Packard
Index: arch/ia64/mm/extable.c
=================================RCS file: /var/cvs/linux/arch/ia64/mm/extable.c,v
retrieving revision 1.2
diff -u -p -r1.2 extable.c
--- arch/ia64/mm/extable.c 25 Jan 2002 20:14:42 -0000 1.2
+++ arch/ia64/mm/extable.c 12 Feb 2002 16:42:55 -0000
@@ -59,6 +59,8 @@ search_exception_table (unsigned long ad
if (!mp->ex_table_start)
continue;
archdata = (struct archdata *) mp->archdata_start;
+ if (!archdata)
+ continue;
entry = search_one_table(mp->ex_table_start, mp->ex_table_end - 1,
addr, (unsigned long) archdata->gp);
if (entry) {
next reply other threads:[~2002-02-12 21:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-12 21:51 Bjorn Helgaas [this message]
2002-02-12 22:09 ` [Linux-ia64] null pointer dereference patch David Mosberger
2002-02-20 0:22 ` Keith Owens
2002-02-20 22:26 ` David Mosberger
2002-02-20 22:47 ` Keith Owens
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