From 21cbbc6d0d47530d0cd68d23147f6ef45926a046 Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Tue, 10 Apr 2001 08:26:38 +0000 Subject: [PATCH] Added the check to avoid NULL pointer dereference in snd_pcm_areas_copy --- src/pcm/pcm_share.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/src/pcm/pcm_share.c b/src/pcm/pcm_share.c index 935f57c9..c5958dd2 100644 --- a/src/pcm/pcm_share.c +++ b/src/pcm/pcm_share.c @@ -865,10 +865,11 @@ static int snd_pcm_share_start(snd_pcm_t *pcm) snd_pcm_uframes_t cont = pcm->buffer_size - offset; if (cont < frames) frames = cont; - snd_pcm_areas_copy(pcm->running_areas, offset, - pcm->stopped_areas, xfer, - pcm->channels, frames, - pcm->format); + if (pcm->stopped_areas != NULL) + snd_pcm_areas_copy(pcm->running_areas, offset, + pcm->stopped_areas, xfer, + pcm->channels, frames, + pcm->format); xfer += frames; } snd_pcm_mmap_appl_forward(pcm, hw_avail); -- 2.47.1