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ALSA: vx222: fix null-ptr-deref 

a recent refactor created a null pointer vx in snd_vx222_probe().
The vx pointer should have been populated in snd_vx222_create() as
suggested in earlier version, otherwise vx->core.ibl.size will throw an
error.

[    1.298398] BUG: kernel NULL pointer dereference, address: 00000000000001d8
[    1.316799] RIP: 0010:snd_vx222_probe+0x155/0x290 [snd_vx222]

Fixes: 3bde3359aa ("ALSA: vx222: Allocate resources with device-managed APIs")
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Link: https://lore.kernel.org/r/20210907014746.1445278-1-ztong0001@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Tong Zhang 2021-09-06 18:47:45 -07:00 committed by Takashi Iwai
parent c8b177b6e3
commit 8491f59e3b
1 changed files with 1 additions and 0 deletions
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sound/pci/vx222/vx222.c
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@ -137,6 +137,7 @@ static int snd_vx222_create(struct snd_card *card, struct pci_dev *pci,
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
*rchip = vx;
return 0;
}