Will Deacon b9cdc88df8 virtio: 9p: correctly pass physical address to userspace for high pages ...

When using a virtio transport, the 9p net device may pass the physical
address of a kernel buffer to userspace via a scatterlist inside a
virtqueue. If the kernel buffer is mapped outside of the linear mapping
(e.g. highmem), then virt_to_page will return a bogus value and we will
populate the scatterlist with junk.

This patch uses kmap_to_page when populating the page array for a kernel
buffer.

Cc: stable@kernel.org
Cc: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

2012-10-22 18:19:36 +10:30

..

client.c

net/9p: Check errno validity

2012-09-06 13:54:55 -05:00

error.c

9p: Reduce object size with CONFIG_NET_9P_DEBUG

2012-01-05 10:51:44 -06:00

Kconfig

9p: remove experimental tag from tested configurations

2011-05-25 08:46:38 -05:00

Makefile

[net/9p] Preparation and helper functions for zero copy

2011-03-15 09:57:34 -05:00

mod.c

9p: Reduce object size with CONFIG_NET_9P_DEBUG

2012-01-05 10:51:44 -06:00

protocol.c

9p: fix min_t() casting in p9pdu_vwritef()

2012-06-27 15:26:24 -07:00

protocol.h

net/9p: Convert net/9p protocol dumps to tracepoints

2011-10-24 11:13:12 -05:00

trans_common.c

fs/9p: Update zero-copy implementation in 9p

2011-10-24 11:13:11 -05:00

trans_common.h

fs/9p: Update zero-copy implementation in 9p

2011-10-24 11:13:11 -05:00

trans_fd.c

The following changes since commit 4cbe5a555fa58a79b6ecbb6c531b8bab0650778d:

2012-10-12 09:59:23 +09:00

trans_rdma.c

9p: Reduce object size with CONFIG_NET_9P_DEBUG

2012-01-05 10:51:44 -06:00

trans_virtio.c

virtio: 9p: correctly pass physical address to userspace for high pages

2012-10-22 18:19:36 +10:30

util.c

9p: Reduce object size with CONFIG_NET_9P_DEBUG

2012-01-05 10:51:44 -06:00