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ALSA: cs46xx: Potential NULL dereference in probe

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commit 1524f4e47f90b27a3ac84efbdd94c63172246a6f upstream.

The "chip->dsp_spos_instance" can be NULL on some of the ealier error
paths in snd_cs46xx_create().

Reported-by: "Yavuz, Tuba" <tuba@ece.ufl.edu>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2019-01-08 10:43:30 +03:00 • committed by Greg Kroah-Hartman
parent 6584ae39fa
commit 281a9e46a9
1 changed files with 3 additions and 0 deletions
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3
sound/pci/cs46xx/dsp_spos.c
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@ -903,6 +903,9 @@ int cs46xx_dsp_proc_done (struct snd_cs46xx *chip)
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
int i;
if (!ins)
return 0;
snd_info_free_entry(ins->proc_sym_info_entry);
ins->proc_sym_info_entry = NULL;