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Merge branch 'uaccess.access_ok' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

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Pull uaccess/access_ok updates from Al Viro:
 "Removals of trivially pointless access_ok() calls.

  Note: the fiemap stuff was removed from the series, since they are
  duplicates with part of ext4 series carried in Ted's tree"

* 'uaccess.access_ok' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vmci_host: get rid of pointless access_ok()
  hfi1: get rid of pointless access_ok()
  usb: get rid of pointless access_ok() calls
  lpfc_debugfs: get rid of pointless access_ok()
  efi_test: get rid of pointless access_ok()
  drm_read(): get rid of pointless access_ok()
  via-pmu: don't bother with access_ok()
  drivers/crypto/ccp/sev-dev.c: get rid of pointless access_ok()
  omapfb: get rid of pointless access_ok() calls
  amifb: get rid of pointless access_ok() calls
  drivers/fpga/dfl-afu-dma-region.c: get rid of pointless access_ok()
  drivers/fpga/dfl-fme-pr.c: get rid of pointless access_ok()
  cm4000_cs.c cmm_ioctl(): get rid of pointless access_ok()
  nvram: drop useless access_ok()
  n_hdlc_tty_read(): remove pointless access_ok()
  tomoyo_write_control(): get rid of pointless access_ok()
  btrfs_ioctl_send(): don't bother with access_ok()
  fat_dir_ioctl(): hadn't needed that access_ok() for more than a decade...
  dlmfs_file_write(): get rid of pointless access_ok()
This commit is contained in:
Linus Torvalds
2020-06-01 16:09:43 -07:00
parent 4b01285e16 87c233b815
commit e0cd920687
21 changed files with 3 additions and 123 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/crypto/ccp/sev-dev.c
View File

@@ -394,8 +394,7 @@ static int sev_ioctl_do_pek_csr(struct sev_issue_cmd *argp, bool writable)
goto cmd;
/* allocate a physically contiguous buffer to store the CSR blob */
if (!access_ok(input.address, input.length) ||
input.length > SEV_FW_BLOB_MAX_SIZE) {
if (input.length > SEV_FW_BLOB_MAX_SIZE) {
ret = -EFAULT;
goto e_free;
}
@@ -632,12 +631,6 @@ static int sev_ioctl_do_get_id2(struct sev_issue_cmd *argp)
if (copy_from_user(&input, (void __user *)argp->data, sizeof(input)))
return -EFAULT;
/* Check if we have write access to the userspace buffer */
if (input.address &&
input.length &&
!access_ok(input.address, input.length))
return -EFAULT;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@@ -753,15 +746,13 @@ static int sev_ioctl_do_pdh_export(struct sev_issue_cmd *argp, bool writable)
goto cmd;
/* Allocate a physically contiguous buffer to store the PDH blob. */
if ((input.pdh_cert_len > SEV_FW_BLOB_MAX_SIZE) ||
!access_ok(input.pdh_cert_address, input.pdh_cert_len)) {
if (input.pdh_cert_len > SEV_FW_BLOB_MAX_SIZE) {
ret = -EFAULT;
goto e_free;
}
/* Allocate a physically contiguous buffer to store the cert chain blob. */
if ((input.cert_chain_len > SEV_FW_BLOB_MAX_SIZE) ||
!access_ok(input.cert_chain_address, input.cert_chain_len)) {
if (input.cert_chain_len > SEV_FW_BLOB_MAX_SIZE) {
ret = -EFAULT;
goto e_free;
}