From: Marcelo Ricardo Leitner Date: Mon, 08 Jan 2018 21:02:26 +0000 Subject: [PATCH net 0/3] Some sockopt optlen fixes Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Cc: linux-sctp@vger.kernel.org, Neil Horman , Vlad Yasevich , haliu@redhat.com 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