linux-kernel - [PATCH 3.12 001/170] Revert "aio: fix kernel memory disclosure in io

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Date:	Fri, 18 Jul 2014 14:10:06 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
	Benjamin LaHaise <bcrl@...ck.org>,
	Mateusz Guzik <mguzik@...hat.com>,
	Petr Matousek <pmatouse@...hat.com>,
	Kent Overstreet <kmo@...erainc.com>,
	Jeff Moyer <jmoyer@...hat.com>
Subject: [PATCH 3.12 001/170] Revert "aio: fix kernel memory disclosure in io_getevents() introduced in v3.10"

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

This reverts commit 0e2e24e5dc6eb6f0698e9dc97e652f132b885624, which
was applied twice mistakenly. The first one is
bee3f7b8188d4b2a5dfaeb2eb4a68d99f67daecf.

Reported-by: Gu Zheng <guz.fnst@...fujitsu.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Benjamin LaHaise <bcrl@...ck.org>
Cc: Mateusz Guzik <mguzik@...hat.com>
Cc: Petr Matousek <pmatouse@...hat.com>
Cc: Kent Overstreet <kmo@...erainc.com>
Cc: Jeff Moyer <jmoyer@...hat.com>
---
 fs/aio.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index 0abde33de70e..e609e15f36b9 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1066,9 +1066,6 @@ static long aio_read_events_ring(struct kioctx *ctx,
 	head %= ctx->nr_events;
 	tail %= ctx->nr_events;
 
-	head %= ctx->nr_events;
-	tail %= ctx->nr_events;
-
 	while (ret < nr) {
 		long avail;
 		struct io_event *ev;
-- 
2.0.0

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