korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-21 20:22:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

cxl/mem: Return -EFAULT if copy_to_user() fails

Browse Source 
The copy_to_user() function returns the number of bytes remaining to be
copied, but we want to return -EFAULT if the copy doesn't complete.

Fixes: b754ffbbc0ee ("cxl/mem: Add basic IOCTL interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YC+K3kgzqm20zCWY@mwanda
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Carpenter 2021-02-19 12:54:38 +03:00 committed by Dan Williams
parent 68a5a9a243
commit 58294927f4
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/cxl/mem.c
View File

@ -752,7 +752,10 @@ static int cxl_send_cmd(struct cxl_memdev *cxlmd,
if (rc)
return rc;
return copy_to_user(s, &send, sizeof(send));
if (copy_to_user(s, &send, sizeof(send)))
return -EFAULT;
return 0;
}
static long __cxl_memdev_ioctl(struct cxl_memdev *cxlmd, unsigned int cmd,