netdev - [PATCH net-next 0/3] sfc: fix unaligned access in loopback selftests

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Thu, 22 Jun 2023 11:18:55 +0100
From: <edward.cree@....com>
To: <linux-net-drivers@....com>, <davem@...emloft.net>, <kuba@...nel.org>,
	<edumazet@...gle.com>, <pabeni@...hat.com>
CC: <arnd@...db.de>, Edward Cree <ecree.xilinx@...il.com>,
	<netdev@...r.kernel.org>, <habetsm.xilinx@...il.com>
Subject: [PATCH net-next 0/3] sfc: fix unaligned access in loopback selftests

From: Edward Cree <ecree.xilinx@...il.com>

Arnd reported that the sfc drivers each define a packed loopback_payload
 structure with an ethernet header followed by an IP header, whereas the
 kernel definition of iphdr specifies that this is 4-byte aligned,
 causing a W=1 warning.
Fix this in each case by adding two bytes of leading padding to the
 struct, taking care that these are not sent on the wire.
Tested on EF10; build-tested on Siena and Falcon.

Edward Cree (3):
  sfc: use padding to fix alignment in loopback test
  sfc: siena: use padding to fix alignment in loopback test
  sfc: falcon: use padding to fix alignment in loopback test

 drivers/net/ethernet/sfc/falcon/selftest.c | 45 +++++++++++++---------
 drivers/net/ethernet/sfc/selftest.c        | 45 +++++++++++++---------
 drivers/net/ethernet/sfc/siena/selftest.c  | 45 +++++++++++++---------
 3 files changed, 81 insertions(+), 54 deletions(-)