linux-kernel - [PATCH tip/x86/x32] fs: fix close_on_exec pointer in alloc

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Date:	Wed, 22 Feb 2012 00:29:47 -0500
From:	Bobby Powers <bobbypowers@...il.com>
To:	dhowells@...hat.com
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com,
	viro@...iv.linux.org.uk, Bobby Powers <bobbypowers@...il.com>
Subject: [PATCH tip/x86/x32] fs: fix close_on_exec pointer in alloc_fdtable

alloc_fdtable allocates space for the open_fds and close_on_exec
bitfields together, as 2 * nr / BITS_PER_BYTE.  close_on_exec needs to
point to open_fds + nr / BITS_PER_BYTE, not open_fds + nr /
BITS_PER_LONG, as introducted in 1fd36adc: Replace the fd_sets in
struct fdtable with an array of unsigned longs.

Signed-off-by: Bobby Powers <bobbypowers@...il.com>
---
 fs/file.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/file.c b/fs/file.c
index 2d479dd..171f6b4 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -179,7 +179,7 @@ static struct fdtable * alloc_fdtable(unsigned int nr)
 	if (!data)
 		goto out_arr;
 	fdt->open_fds = data;
-	data += nr / BITS_PER_LONG;
+	data += nr / BITS_PER_BYTE;
 	fdt->close_on_exec = data;
 	fdt->next = NULL;
 
-- 
1.7.7.6

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