Messages in this thread | | | Date | Tue, 7 Jun 2022 14:48:14 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH 1/1] comedi: ni_usb6501: fix transfer-buffer overflows |
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On Tue, Jun 07, 2022 at 07:18:02PM +0800, Xiaohui Zhang wrote: > Similar to the handling of vmk80xx_alloc_usb_buffers in commit > a23461c47482("comedi: vmk80xx: fix transfer-buffer overflows"), > we thought a patch might be needed here as well. > > The driver uses endpoint-sized USB transfer buffers but up until > recently had no sanity checks on the sizes. > > Signed-off-by: Xiaohui Zhang <xiaohuizhang@ruc.edu.cn> > --- > drivers/comedi/drivers/ni_usb6501.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/comedi/drivers/ni_usb6501.c b/drivers/comedi/drivers/ni_usb6501.c > index 0dd9edf7bced..8303bfc305c5 100644 > --- a/drivers/comedi/drivers/ni_usb6501.c > +++ b/drivers/comedi/drivers/ni_usb6501.c > @@ -90,6 +90,7 @@ > #include <linux/comedi/comedi_usb.h> > > #define NI6501_TIMEOUT 1000 > +#define MIN_BUF_SIZE 64 > > /* Port request packets */ > static const u8 READ_PORT_REQUEST[] = {0x00, 0x01, 0x00, 0x10, > @@ -459,12 +460,12 @@ static int ni6501_alloc_usb_buffers(struct comedi_device *dev) > struct ni6501_private *devpriv = dev->private; > size_t size; > > - size = usb_endpoint_maxp(devpriv->ep_rx); > + size = max(usb_endpoint_maxp(devpriv->ep_rx), MIN_BUF_SIZE); > devpriv->usb_rx_buf = kzalloc(size, GFP_KERNEL); > if (!devpriv->usb_rx_buf) > return -ENOMEM; > > - size = usb_endpoint_maxp(devpriv->ep_tx); > + size = max(usb_endpoint_maxp(devpriv->ep_tx), MIN_BUF_SIZE); > devpriv->usb_tx_buf = kzalloc(size, GFP_KERNEL); > if (!devpriv->usb_tx_buf) > return -ENOMEM; > -- > 2.17.1 >
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him a patch that has triggered this response. He used to manually respond to these common problems, but in order to save his sanity (he kept writing the same thing over and over, yet to different people), I was created. Hopefully you will not take offence and will fix the problem in your patch and resubmit it so that it can be accepted into the Linux kernel tree.
You are receiving this message because of the following common error(s) as indicated below:
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thanks,
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