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From: Chip Salzenberg <chip@pobox.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH] 2.4.13pre3aa1: expand_fdset() may use invalid pointer
Date: Wed, 17 Oct 2001 11:32:45 -0700	[thread overview]
Message-ID: <20011017113245.A3849@perlsupport.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 318 bytes --]

In 2.4.13pre3aa1, expand_fdset() in fs/file.c has a couple of
execution paths that call kfree() on a pointer that hasn't yet been
initialized.  A minimal patch is attached.
-- 
Chip Salzenberg               - a.k.a. -              <chip@pobox.com>
 "We have no fuel on board, plus or minus 8 kilograms."  -- NEAR tech

[-- Attachment #2: aa-files_struct_rcu-2.4.10-04-1-kfree-fix --]
[-- Type: text/plain, Size: 286 bytes --]


Index: linux/fs/file.c
--- linux/fs/file.c.old	Tue Oct 16 23:28:16 2001
+++ linux/fs/file.c	Wed Oct 17 00:29:43 2001
@@ -203,5 +203,5 @@
 	fd_set *new_openset = 0, *new_execset = 0;
 	int error, nfds = 0;
-	struct rcu_fd_set *arg;
+	struct rcu_fd_set *arg = NULL;
 
 	error = -EMFILE;

             reply	other threads:[~2001-10-17 18:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-10-17 18:32 Chip Salzenberg [this message]
2001-10-17 18:42 ` [PATCH] 2.4.13pre3aa1: expand_fdset() may use invalid pointer Andrea Arcangeli
2001-10-18  6:41   ` Maneesh Soni
2001-10-18  8:22     ` Andrea Arcangeli
2001-10-18  9:48       ` Maneesh Soni
2001-10-18 10:06         ` Andrea Arcangeli

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