Re: [PATCH net 0/3] Some sockopt optlen fixes

On Mon, Jan 08, 2018 at 07:02:26PM -0200, Marcelo Ricardo Leitner wrote:

Hangbin Liu reported that some SCTP sockopt are allowing the user to get
the kernel to allocate really large buffers by not having a ceiling on
optlen.

This patchset address this issue (in patch 2), replace an GFP_ATOMIC
that isn't needed and avoid calculating the option size multiple times
in some setsockopt.

Marcelo Ricardo Leitner (3):
  sctp: GFP_ATOMIC is not needed in sctp_setsockopt_events
  sctp: add a ceiling to optlen in some sockopts
  sctp: make use of pre-calculated len

 net/sctp/socket.c | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

-- 
2.14.3

Series
Acked-by: Neil Horman <nhorman@tuxdriver.com>