Patch "PCI: Fix unaligned accesses in VC code" has been added to the 4.6-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
PCI: Fix unaligned accesses in VC code
to the 4.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-fix-unaligned-accesses-in-vc-code.patch
and it can be found in the queue-4.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
ef0dab4aae14e25efddf1577736f8450132800c5Mon Sep 17 00:00:00 2001
From: David Miller <[email protected]>
Date: Sat, 18 Jun 2016 23:52:25 -0700
Subject: PCI: Fix unaligned accesses in VC code
From: David Miller <[email protected]>
commit ef0dab4aae14e25efddf1577736f8450132800c5 upstream.
The save/restore buffers for VC state is first composed of a 2-byte control register, then a bunch of 4-byte words.
This causes unaligned accesses which trap on platform such as sparc.
This is easy to fix by simply moving the buffer pointer forward by 4 bytes instead of 2 after dealing with the control register. The length adjustment needs to be changed likewise as well.
--- drivers/pci/vc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/pci/vc.c +2 -2
@@ -221,9 +221,9 @@ static int pci_vc_do_save_buffer(structelse pci_write_config_word (dev, pos +PCI_VC_PORT_CTRL , *(u16 *)buf); - buf +=2 ; + buf +=4 ; } - len +=2 ; + len +=4 ;/* * If we have any Low Priority VCs and a VC Arbitration Table Offset
Patches currently in stable-queue which might be from [email protected] are
queue-4.6/pci-fix-unaligned-accesses-in-vc-code.patch queue-4.6/cdc_ncm-workaround-for-em7455-silent-data-interface.patch queue-4.6/macsec-set-actual-real-device-for-xmit-when-protect_frames.patch queue-4.6/ipv6-fix-mem-leak-in-rt6i_pcpu.patch queue-4.6/geneve-fix-max_mtu-setting.patch queue-4.6/net_sched-fix-mirrored-packets-checksum.patch queue-4.6/packet-use-symmetric-hash-for-packet_fanout_hash.patch