[3.14.y][3.16.y-ckt][3.18.y][3.19.y][PATCH 0/1] n_tty: Fix read buffer overwrite when no newline

[Joseph Salisbury <joseph.salisbury@canonical.com>]

Hello,

Please consider including upstream commit fb5ef9e7da39968fec6d6f37f20a23d23740c75e 
in the next v3.14.y, 3.16.y-ckt, 3.18.y, and 3.19.y stable releases.  It was
included upstream as of v4.0-rc1.  It has been tested and confirmed to resolve
http://bugs.launchpad.net/bugs/1381005 .  This bug was introduced in v3.12-rc1 when 
commit 24a89d1 was applied.  This commit is not needed in stable kernels prior to 
v3.12.y.


commit fb5ef9e7da39968fec6d6f37f20a23d23740c75e
Author: Peter Hurley <peter@hurleysoftware.com>
Date:   Fri Jan 16 15:05:39 2015 -0500

    n_tty: Fix read buffer overwrite when no newline


This commit does not apply cleanly to the kernel versions mentined, so I performed 
a backport, which is in email 1/1.  

The 3.12.y and 3.13.y-ckt upstrem kernels can't use the cherry pick of fb5ef9e7 
becuase smp_load_acquire was not introduced until 3.14-rc1.  I'll look into 
alternative way that this bug could be fixed in 3.12.y and 3.13.y-ckt.


Sincerely, 

Joseph Salisbury
 
 




Peter Hurley (1):
  n_tty: Fix read buffer overwrite when no newline

 drivers/tty/n_tty.c | 108 +++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 81 insertions(+), 27 deletions(-)

-- 
2.1.0