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| author | Arnd Bergmann <arnd@arndb.de> | 2017-07-18 13:48:04 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-07-18 17:51:27 +0200 |
| commit | 8a463639db5781ed52c972db013eba7d834f440d (patch) | |
| tree | 0352797a26645b1b6e1fc804475377f5ff3e6c67 | |
| parent | 610e1ae9b533be82b3aa118b907e0a703256913d (diff) | |
| download | linux-8a463639db5781ed52c972db013eba7d834f440d.tar.gz | |
ALSA: als100: fix format string overflow warning
The compiler sees that the format string might overflow for the longname:
sound/isa/als100.c: In function 'snd_als100_pnp_detect':
sound/isa/als100.c:225:27: error: ', dma ' directive writing 6 bytes into a region of size between 0 and 64 [-Werror=format-overflow=]
sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/isa/als100.c:225:3: note: 'sprintf' output between 24 and 113 bytes into a destination of size 80
sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d",
Open-coding "shortname" here gets us below the limit, and using
snprintf() is a good idea too.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/isa/als100.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/sound/isa/als100.c b/sound/isa/als100.c index bc9ea306ee02..6a2c5b48f3ae 100644 --- a/sound/isa/als100.c +++ b/sound/isa/als100.c @@ -222,15 +222,16 @@ static int snd_card_als100_probe(int dev, if (pid->driver_data == SB_HW_DT019X) { strcpy(card->driver, "DT-019X"); strcpy(card->shortname, "Diamond Tech. DT-019X"); - sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d", - card->shortname, chip->name, chip->port, - irq[dev], dma8[dev]); + snprintf(card->longname, sizeof(card->longname), + "Diamond Tech. DT-019X, %s at 0x%lx, irq %d, dma %d", + chip->name, chip->port, irq[dev], dma8[dev]); } else { strcpy(card->driver, "ALS100"); strcpy(card->shortname, "Avance Logic ALS100"); - sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d&%d", - card->shortname, chip->name, chip->port, - irq[dev], dma8[dev], dma16[dev]); + snprintf(card->longname, sizeof(card->longname), + "Avance Logic ALS100, %s at 0x%lx, irq %d, dma %d&%d", + chip->name, chip->port, irq[dev], dma8[dev], + dma16[dev]); } if ((error = snd_sb16dsp_pcm(chip, 0)) < 0) { |