Commits
Omar Sandoval committed 0dd8a4702cb
virtio-console: avoid DMA from stack [ Upstream commit c4baad50297d84bde1a7ad45e50c73adae4a2192 ] 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> Signed-off-by: Sasha Levin <alexander.levin@verizon.com>