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authorArnd Bergmann <arnd@arndb.de>2017-07-18 13:48:04 +0200
committerTakashi Iwai <tiwai@suse.de>2017-07-18 17:51:27 +0200
commit8a463639db5781ed52c972db013eba7d834f440d (patch)
tree0352797a26645b1b6e1fc804475377f5ff3e6c67
parent610e1ae9b533be82b3aa118b907e0a703256913d (diff)
downloadlinux-8a463639db5781ed52c972db013eba7d834f440d.tar.bz2
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.c13
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) {