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The Advanced Linux Sound Architecture (ALSA) - library
009193a345
The memcpy() function in snd_pcm_area_copy() should not be called with the overlapped areas. Alex discovered - using own LD_PRELOAD checked for memcpy() input - that the memcpy() is called with src == dst. For some special plugin combos (rate+softvol+hw for example), the same areas with same offsets can be asked to be copied (softvol). The collapse check uses own areas created on heap, causing dst_area == src_area && dst_offset == src_offset check bypassed. Two fixes are in this patch: - use assert to check the memcpy() input for future triggers - bypass the snd_pcm_area_copy() call for collapsed identical areas Reported-by: Alexander Kruppa <akruppa@gmail.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz> |
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