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| author | Omar Sandoval <osandov@fb.com> | 2017-02-01 00:02:27 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-21 09:32:42 +0200 |
| commit | e5349c13c7a8bd6e0be0f81f4464fc2edae05d5b (patch) | |
| tree | cf82a76a8c8cf60098711c1a0759ae6ece20014e /Makefile | |
| parent | e0116f4d9a9ad5112d315b236c7b3d7036d404d7 (diff) | |
| download | linux-stable-e5349c13c7a8bd6e0be0f81f4464fc2edae05d5b.tar.gz linux-stable-e5349c13c7a8bd6e0be0f81f4464fc2edae05d5b.tar.bz2 linux-stable-e5349c13c7a8bd6e0be0f81f4464fc2edae05d5b.zip | |
virtio-console: avoid DMA from stack
commit c4baad50297d84bde1a7ad45e50c73adae4a2192 upstream.
put_chars() stuffs the buffer it gets into an sg, but that buffer may be
on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it
manifested as printks getting turned into NUL bytes).
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions