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tpm_vtpm_proxy: fix address space of a user pointer in vtpmx_fops_ioctl()

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When running make C=2 M=drivers/char/tpm/

  CC [M]  drivers/char/tpm//tpm_crb.o
  CHECK   drivers/char/tpm//tpm_vtpm_proxy.c
drivers/char/tpm//tpm_vtpm_proxy.c:552:32: warning: incorrect type in assignment (different address spaces)
drivers/char/tpm//tpm_vtpm_proxy.c:552:32:    expected struct vtpm_proxy_new_dev *vtpm_new_dev_p
drivers/char/tpm//tpm_vtpm_proxy.c:552:32:    got void [noderef] <asn:1>*argp
drivers/char/tpm//tpm_vtpm_proxy.c:553:51: warning: incorrect type in argument 2 (different address spaces)
drivers/char/tpm//tpm_vtpm_proxy.c:553:51:    expected void const [noderef] <asn:1>*from
drivers/char/tpm//tpm_vtpm_proxy.c:553:51:    got struct vtpm_proxy_new_dev *vtpm_new_dev_p
drivers/char/tpm//tpm_vtpm_proxy.c:559:34: warning: incorrect type in argument 1 (different address spaces)
drivers/char/tpm//tpm_vtpm_proxy.c:559:34:    expected void [noderef] <asn:1>*to
drivers/char/tpm//tpm_vtpm_proxy.c:559:34:    got struct vtpm_proxy_new_dev *vtpm_new_dev_p

The __user annotation was missing from the corresponding variable.

Fixes: 794c38e01358 ("tpm: Proxy driver for supporting multiple emulated TPMs")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Jarkko Sakkinen 2016-06-17 16:39:28 +02:00
parent 0edbfea537
commit 9da7e787e1
1 changed files with 1 additions and 1 deletions
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2
drivers/char/tpm/tpm_vtpm_proxy.c
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@ -541,7 +541,7 @@ static long vtpmx_fops_ioctl(struct file *f, unsigned int ioctl,
unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct vtpm_proxy_new_dev *vtpm_new_dev_p;
struct vtpm_proxy_new_dev __user *vtpm_new_dev_p;
struct vtpm_proxy_new_dev vtpm_new_dev;
struct file *file;