admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

io_uring/rsrc: use get/put_user() for integer copy

Browse Source 
It's just getting an integer from userspace, installing a file, then
copying the output direct descriptor back. No need to use the full
copy_to/from_user() for that.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2025-11-03 11:02:54 -07:00
parent adb395c457
commit 3615e3f794
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
io_uring/rsrc.c
View File

@@ -454,7 +454,7 @@ static int io_files_update_with_index_alloc(struct io_kiocb *req,
return -ENXIO;
for (done = 0; done < up->nr_args; done++) {
if (copy_from_user(&fd, &fds[done], sizeof(fd))) {
if (get_user(fd, &fds[done])) {
ret = -EFAULT;
break;
}
@@ -468,7 +468,7 @@ static int io_files_update_with_index_alloc(struct io_kiocb *req,
IORING_FILE_INDEX_ALLOC);
if (ret < 0)
break;
if (copy_to_user(&fds[done], &ret, sizeof(ret))) {
if (put_user(ret, &fds[done])) {
__io_close_fixed(req->ctx, issue_flags, ret);
ret = -EFAULT;
break;