From: Clemens Ladisch <clemens@ladisch.de>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>,
alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org
Subject: Re: [alsa-devel] [patch v2] ALSA: opl3: small array underflow
Date: Tue, 03 Mar 2015 21:59:17 +0100 [thread overview]
Message-ID: <54F620A5.900@ladisch.de> (raw)
In-Reply-To: <20150303191318.GA7569@mwanda>
Dan Carpenter wrote:
> We don't check for negatives so "pitchbend" can be SHRT_MIN here. It
> means that we can read up to 6 elements before the start of the
> opl3_note_table[] array.
>
> There are several ways we could fix this. I have gone with what is
> maybe the lazier approach of just changing negative values to zero.
The lower bound is not zero but -8192.
Regards,
Clemens
WARNING: multiple messages have this Message-ID (diff)
From: Clemens Ladisch <clemens@ladisch.de>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>,
alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org
Subject: Re: [alsa-devel] [patch v2] ALSA: opl3: small array underflow
Date: Tue, 03 Mar 2015 20:59:17 +0000 [thread overview]
Message-ID: <54F620A5.900@ladisch.de> (raw)
In-Reply-To: <20150303191318.GA7569@mwanda>
Dan Carpenter wrote:
> We don't check for negatives so "pitchbend" can be SHRT_MIN here. It
> means that we can read up to 6 elements before the start of the
> opl3_note_table[] array.
>
> There are several ways we could fix this. I have gone with what is
> maybe the lazier approach of just changing negative values to zero.
The lower bound is not zero but -8192.
Regards,
Clemens
next prev parent reply other threads:[~2015-03-03 20:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-03 9:38 [patch] ALSA: seq_midi_emul: small array underflow Dan Carpenter
2015-03-03 9:38 ` Dan Carpenter
2015-03-03 11:21 ` [alsa-devel] " Clemens Ladisch
2015-03-03 11:21 ` Clemens Ladisch
2015-03-03 11:38 ` Dan Carpenter
2015-03-03 11:38 ` Dan Carpenter
2015-03-03 19:13 ` [patch v2] ALSA: opl3: " Dan Carpenter
2015-03-03 19:13 ` Dan Carpenter
2015-03-03 20:59 ` Clemens Ladisch [this message]
2015-03-03 20:59 ` [alsa-devel] " Clemens Ladisch
2015-03-03 21:06 ` Dan Carpenter
2015-03-03 21:06 ` Dan Carpenter
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