On Mon, 23 Jun 2014 06:04:20 +0400 Andrey Chernov <a...@freebsd.org> wrote:
> Always happens at shutdown after all buffers are synced, see > screenshot: http://i.imgur.com/8WXTMPj.png > > -- > http://ache.vniz.net/ Hi Andrey, there's not to much to go on from the screenshoot alone and one would expect more details on the crash from people with your experience :) Please provide us with the information on the actual audio hardware you are using, preferably in form of a dmesg output. This revision is your culpit: http://svnweb.freebsd.org/changeset/base/267581 and I have strong suspicion that restoring the NULL check on dmatag in the chunk below will cure your crash. -- Modified: head/sys/dev/sound/pcm/buffer.c ============================================================================== --- head/sys/dev/sound/pcm/buffer.c Tue Jun 17 14:47:49 2014 (r267580) +++ head/sys/dev/sound/pcm/buffer.c Tue Jun 17 16:07:57 2014 (r267581) @@ -139,10 +139,9 @@ sndbuf_free(struct snd_dbuf *b) if (b->buf) { if (b->flags & SNDBUF_F_MANAGED) { - if (b->dmamap) + if (b->buf_addr) bus_dmamap_unload(b->dmatag, b->dmamap); - if (b->dmatag) - bus_dmamem_free(b->dmatag, b->buf, b->dmamap); + bus_dmamem_free(b->dmatag, b->buf, b->dmamap); } else free(b->buf, M_DEVBUF); } -- Alexander Kabaev
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