android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

io_uring/fs: remove sqe->rw_flags checking from LINKAT

Browse Source 
commit a52d4f657568d6458e873f74a9602e022afe666f upstream.

This is unionized with the actual link flags, so they can of course be
set and they will be evaluated further down. If not we fail any LINKAT
that has to set option flags.

Fixes: cf30da90bc ("io_uring: add support for IORING_OP_LINKAT")
Cc: stable@vger.kernel.org
Reported-by: Thomas Leonard <talex5@gmail.com>
Link: https://github.com/axboe/liburing/issues/955
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Axboe 2023-09-28 09:23:27 -06:00 committed by Greg Kroah-Hartman
parent 06fba8a8de
commit 75c307d9f2
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
io_uring/fs.c
View File

@ -243,7 +243,7 @@ int io_linkat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
struct io_link *lnk = io_kiocb_to_cmd(req, struct io_link); struct io_link *lnk = io_kiocb_to_cmd(req, struct io_link);
const char __user *oldf, *newf; const char __user *oldf, *newf;
if (sqe->rw_flags || sqe->buf_index || sqe->splice_fd_in) if (sqe->buf_index || sqe->splice_fd_in)
return -EINVAL; return -EINVAL;
if (unlikely(req->flags & REQ_F_FIXED_FILE)) if (unlikely(req->flags & REQ_F_FIXED_FILE))
return -EBADF; return -EBADF;