On Thu, 30 Apr 2020 18:34:02 +0200, Serge Belyshev wrote: > > > ... > > > > This patch addresses those possible buffer overflow accesses by simply > > setting the upper limit per the given buffer size for each plugin > > before src_frames() and after dst_frames() calls. > > Hi! > > This patch breaks any output via oss interface, as evident by "mpv > --ao=oss somefile.mp3" or "mpg123 -o oss somefile.mp3" or just "cat > /dev/urandom > /dev/dsp", which worked previously in kernel version 5.5 > but not any longer starting with 5.6. > > It appears here that plugin->buf_frames is zero which results in ENXIO > returned to userspace. The fix is already in sound git tree, and will be in the next pull request to 5.7-rc4. thanks, Takashi
