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

Pull uaccess/__copy_from_user updates from Al Viro:
 "Getting rid of __copy_from_user() callers - patches that don't fit
  into other series"

* 'uaccess.__copy_from_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  pstore: switch to copy_from_user()
  firewire: switch ioctl_queue_iso to use of copy_from_user()
This commit is contained in:
Linus Torvalds 2020-06-01 16:18:46 -07:00
parent 4fdea5848b ff84778104
commit 56446efab9
2 changed files with 2 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/firewire/core-cdev.c
View File

@ -1081,8 +1081,6 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
return -EINVAL; return -EINVAL;
p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets); p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets);
if (!access_ok(p, a->size))
return -EFAULT;
end = (void __user *)p + a->size; end = (void __user *)p + a->size;
count = 0; count = 0;
@ -1120,7 +1118,7 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
&p->header[transmit_header_bytes / 4]; &p->header[transmit_header_bytes / 4];
if (next > end) if (next > end)
return -EINVAL; return -EINVAL;
if (__copy_from_user if (copy_from_user
(u.packet.header, p->header, transmit_header_bytes)) (u.packet.header, p->header, transmit_header_bytes))
return -EFAULT; return -EFAULT;
if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT && if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT &&

4
fs/pstore/ram_core.c
View File

@ -283,7 +283,7 @@ static int notrace persistent_ram_update_user(struct persistent_ram_zone *prz,
const void __user *s, unsigned int start, unsigned int count) const void __user *s, unsigned int start, unsigned int count)
{ {
struct persistent_ram_buffer *buffer = prz->buffer; struct persistent_ram_buffer *buffer = prz->buffer;
int ret = unlikely(__copy_from_user(buffer->data + start, s, count)) ? int ret = unlikely(copy_from_user(buffer->data + start, s, count)) ?
-EFAULT : 0; -EFAULT : 0;
persistent_ram_update_ecc(prz, start, count); persistent_ram_update_ecc(prz, start, count);
return ret; return ret;
@ -348,8 +348,6 @@ int notrace persistent_ram_write_user(struct persistent_ram_zone *prz,
int rem, ret = 0, c = count; int rem, ret = 0, c = count;
size_t start; size_t start;
if (unlikely(!access_ok(s, count)))
return -EFAULT;
if (unlikely(c > prz->buffer_size)) { if (unlikely(c > prz->buffer_size)) {
s += c - prz->buffer_size; s += c - prz->buffer_size;
c = prz->buffer_size; c = prz->buffer_size;