linux-kernel - [PATCH v2 linux-next] ALSA: pcm: 'BUG:' message unnecessarily triggers kerneloops

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Date:	Wed, 16 Apr 2014 08:18:35 -0600
From:	Tim Gardner <tim.gardner@...onical.com>
To:	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Cc:	Tim Gardner <tim.gardner@...onical.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Mark Brown <broonie@...aro.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	JongHo Kim <furmuwon@...il.com>
Subject: [PATCH v2 linux-next] ALSA: pcm: 'BUG:' message unnecessarily triggers kerneloops

BugLink: http://bugs.launchpad.net/bugs/1305480

The kerneloops-daemon scans dmesg for common crash signatures, among
which is 'BUG:'. The message emitted by the PCM library is really a
warning, so the most expedient thing to do seems to be to change the
string.

Cc: Jaroslav Kysela <perex@...ex.cz>
Cc: Takashi Iwai <tiwai@...e.de>
Cc: Mark Brown <broonie@...aro.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>
Cc: JongHo Kim <furmuwon@...il.com>
Signed-off-by: Tim Gardner <tim.gardner@...onical.com>
---

v2: Changed string preface from "OVER RUN" to "XRUN". As Takashi pointed out,
'Use a term "XRUN", as it's not always an overrun.'

 sound/core/pcm_lib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index ce83def..9acc77e 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -345,7 +345,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
 			snd_pcm_debug_name(substream, name, sizeof(name));
 			xrun_log_show(substream);
 			pcm_err(substream->pcm,
-				"BUG: %s, pos = %ld, buffer size = %ld, period size = %ld\n",
+				"XRUN: %s, pos = %ld, buffer size = %ld, period size = %ld\n",
 				name, pos, runtime->buffer_size,
 				runtime->period_size);
 		}
-- 
1.9.1

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