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Subject[PATCH 3.18 80/83] tty: wipe buffer.
Date
3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Torvalds <torvalds@linux-foundation.org>

commit c9a8e5fce009e3c601a43c49ea9dbcb25d1ffac5 upstream.

After we are done with the tty buffer, zero it out.

Reported-by: aszlig <aszlig@nix.build>
Tested-by: Milan Broz <gmazyland@gmail.com>
Tested-by: Daniel Zatovic <daniel.zatovic@gmail.com>
Tested-by: aszlig <aszlig@nix.build>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/tty/tty_buffer.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -415,6 +415,8 @@ receive_buf(struct tty_struct *tty, stru
disc->ops->receive_buf(tty, p, f, count);
}
head->read += count;
+ if (count > 0)
+ memset(p, 0, count);
return count;
}


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