This is a note to let you know that I've just added the patch titled
fix the regression from "direct-io: Fix negative return from dio read beyond eof"
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fix-the-regression-from-direct-io-fix-negative-return-from-dio-read-beyond-eof.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2d4594acbf6d8f75a27f3578476b6a27d8b13ebb Mon Sep 17 00:00:00 2001
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Tue, 8 Dec 2015 12:22:47 -0500
Subject: fix the regression from "direct-io: Fix negative return from dio read beyond eof"
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
commit 2d4594acbf6d8f75a27f3578476b6a27d8b13ebb upstream.
Sure, it's better to bail out of past-the-eof read and return 0 than return
a bogus negative value on such. Only we'd better make sure we are bailing out
with 0 and not -ENOMEM...
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/direct-io.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1165,6 +1165,7 @@ do_blockdev_direct_IO(struct kiocb *iocb
if (dio->flags & DIO_LOCKING)
mutex_unlock(&inode->i_mutex);
kmem_cache_free(dio_cache, dio);
+ retval = 0;
goto out;
}
Patches currently in stable-queue which might be from viro@xxxxxxxxxxxxxxxxxx are
queue-4.1/fix-the-regression-from-direct-io-fix-negative-return-from-dio-read-beyond-eof.patch
queue-4.1/staging-lustre-echo_copy.._lsm-dereferences-userland-pointers-directly.patch
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