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| author | Aditya Pakki <pakki001@umn.edu> | 2019-03-04 17:00:02 -0600 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-03-13 11:27:06 +0100 |
| commit | a2c6433ee5a35a8de6d563f6512a26f87835ea0f (patch) | |
| tree | 800f577e386fb939b01b35316db3a5b3adbf3f69 /sound | |
| parent | d344e07940f3a3a93dec38f36593cca1591a7a5e (diff) | |
| download | linux-a2c6433ee5a35a8de6d563f6512a26f87835ea0f.tar.bz2 | |
ALSA: usx2y: Fix potential NULL pointer dereference
usb_alloc_urb() can fail due to kmalloc failure and push the error
upstream. Further this can cause a NULL pointer dereference in
init_pipe_urbs(). This patch avoids such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/usx2y/usb_stream.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c index b0f8979ff2d2..221adf68bd0c 100644 --- a/sound/usb/usx2y/usb_stream.c +++ b/sound/usb/usx2y/usb_stream.c @@ -104,7 +104,12 @@ static int init_urbs(struct usb_stream_kernel *sk, unsigned use_packsize, for (u = 0; u < USB_STREAM_NURBS; ++u) { sk->inurb[u] = usb_alloc_urb(sk->n_o_ps, GFP_KERNEL); + if (!sk->inurb[u]) + return -ENOMEM; + sk->outurb[u] = usb_alloc_urb(sk->n_o_ps, GFP_KERNEL); + if (!sk->outurb[u]) + return -ENOMEM; } if (init_pipe_urbs(sk, use_packsize, sk->inurb, indata, dev, in_pipe) || |