archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-08 03:24:45 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

io_uring-6.17-20250808

Browse source 
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmiWLk0QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpjl3D/0eZiD3qTmdIcf7GNAoaR/aD4zgICEhwEUf
 2bzVFJ7RAZeplPhT2QLAf4CRoDui6iYLXaJONNsZc8r355FLKsZcMVmU8FFBnM6Q
 chn0wAmv92Jk/fMQWhw1mL4c19jCibTOefzHzm7s2AMhPyhAzlvcMG/Mr9uiNt38
 uBXOo9DOkX1fYlUcmYH9v8KDTQBE6UMXeEcDiLvxGUs+JW1hbBAPmh9K3/KJ5qbs
 wShNL0UOgq5V/GUZqMr6xRqkW++B/6/v6Y/O+wbJ8lgLV97YQi3xemHu3BCx8Kv4
 lbvyctUKCTCgQPgnhluu3KuldDkLn3FA7sQ2g1b1FZWkEpqLhgJIRjgGR53GmeHX
 c58VcRc+MNXf+Lzuy7ZbrYdI6Gbt52Ns+g4S05TNo6ZZW0NGyaZK5aeb7qQyhmnY
 rCELejwPQKTZv8YfRgV+Kt14x2Z7OdGa49u31JeYUE/IYu9M2FC+XE3//D7Bdz+3
 QhU4ZzOW/LRA7xXq/uRb6XK0qRFt34nA+A7jFeKaZbrh6XvXD8VN5MFKkEttcyw5
 JCr3jeYV7RbhWuPyKFwAJ4EBn/HnUUEsSEKA5/Rr0tvHkR95ytx+2l3qZfihrCsU
 jsjSMCn4PZ+L3t2OQ2EaVEeiJ4oB4zwi37GZdQGiMQ7T46RkSzwBam6sJETFGPhF
 TCL70jIwbg==
 =LCD/
 -----END PGP SIGNATURE-----

Merge tag 'io_uring-6.17-20250808' of git://git.kernel.dk/linux

Pull io_uring fixes from Jens Axboe:

 - Allow vectorized payloads for send/send-zc - like sendmsg, but
   without the hassle of a msghdr.

 - Fix for an integer wrap that should go to stable, spotted by syzbot.
   Nothing alarming here, as you need to be root to hit this.
   Nevertheless, it should get fixed.

   FWIW, kudos to the syzbot crew for having much nicer reproducers now,
   and with nicely annotated source code as well. This is particularly
   useful as syzbot uses the raw interface rather than liburing,
   historically it's been difficult to turn a syzbot reproducer into a
   meaningful test case. With the recent changes, not true anymore!

* tag 'io_uring-6.17-20250808' of git://git.kernel.dk/linux:
  io_uring/memmap: cast nr_pages to size_t before shifting
  io_uring/net: Allow to do vectorized send
This commit is contained in:
Linus Torvalds 2025-08-09 08:45:08 +03:00
commit 24bbfb8920
3 changed files with 12 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/uapi/linux/io_uring.h
View file

@ -392,12 +392,16 @@ enum io_uring_op {
* the starting buffer ID in cqe->flags as per
* usual for provided buffer usage. The buffers
* will be contiguous from the starting buffer ID.
*
* IORING_SEND_VECTORIZED If set, SEND[_ZC] will take a pointer to a io_vec
* to allow vectorized send operations.
*/
#define IORING_RECVSEND_POLL_FIRST (1U << 0)
#define IORING_RECV_MULTISHOT (1U << 1)
#define IORING_RECVSEND_FIXED_BUF (1U << 2)
#define IORING_SEND_ZC_REPORT_USAGE (1U << 3)
#define IORING_RECVSEND_BUNDLE (1U << 4)
#define IORING_SEND_VECTORIZED (1U << 5)
/*
* cqe.res for IORING_CQE_F_NOTIF if

2
io_uring/memmap.c
View file

@ -156,7 +156,7 @@ static int io_region_allocate_pages(struct io_ring_ctx *ctx,
unsigned long mmap_offset)
{
gfp_t gfp = GFP_KERNEL_ACCOUNT | __GFP_ZERO | __GFP_NOWARN;
unsigned long size = mr->nr_pages << PAGE_SHIFT;
size_t size = (size_t) mr->nr_pages << PAGE_SHIFT;
unsigned long nr_allocated;
struct page **pages;
void *p;

9
io_uring/net.c
View file

@ -382,6 +382,10 @@ static int io_send_setup(struct io_kiocb *req, const struct io_uring_sqe *sqe)
}
if (req->flags & REQ_F_BUFFER_SELECT)
return 0;
if (sr->flags & IORING_SEND_VECTORIZED)
return io_net_import_vec(req, kmsg, sr->buf, sr->len, ITER_SOURCE);
return import_ubuf(ITER_SOURCE, sr->buf, sr->len, &kmsg->msg.msg_iter);
}
@ -409,7 +413,7 @@ static int io_sendmsg_setup(struct io_kiocb *req, const struct io_uring_sqe *sqe
return io_net_import_vec(req, kmsg, msg.msg_iov, msg.msg_iovlen, ITER_SOURCE);
}
#define SENDMSG_FLAGS (IORING_RECVSEND_POLL_FIRST | IORING_RECVSEND_BUNDLE)
#define SENDMSG_FLAGS (IORING_RECVSEND_POLL_FIRST | IORING_RECVSEND_BUNDLE | IORING_SEND_VECTORIZED)
int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
@ -1318,7 +1322,8 @@ void io_send_zc_cleanup(struct io_kiocb *req)
}
#define IO_ZC_FLAGS_COMMON (IORING_RECVSEND_POLL_FIRST | IORING_RECVSEND_FIXED_BUF)
#define IO_ZC_FLAGS_VALID (IO_ZC_FLAGS_COMMON | IORING_SEND_ZC_REPORT_USAGE)
#define IO_ZC_FLAGS_VALID (IO_ZC_FLAGS_COMMON | IORING_SEND_ZC_REPORT_USAGE | \
IORING_SEND_VECTORIZED)
int io_send_zc_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{