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| author |   Omar Sandoval <osandov@fb.com> | 2017-02-01 00:02:27 -0800 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2017-03-02 01:35:06 +0200 |
| commit | c4baad50297d84bde1a7ad45e50c73adae4a2192 (patch) | |
| tree | 2efdf37fc4b48748d19ed2e3cb8a75908581fd26 /drivers/virtio | |
| parent | vhost: introduce O(1) vq metadata cache (diff) | |
| download | linux-dev-c4baad50297d84bde1a7ad45e50c73adae4a2192.tar.xz linux-dev-c4baad50297d84bde1a7ad45e50c73adae4a2192.zip | |
virtio-console: avoid DMA from stack
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>
Diffstat (limited to 'drivers/virtio')
0 files changed, 0 insertions, 0 deletions