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io_uring-5.19-2022-07-08 

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Merge tag 'io_uring-5.19-2022-07-08' of git://git.kernel.dk/linux-block

Pull io_uring tweak from Jens Axboe:
 "Just a minor tweak to an addition made in this release cycle: padding
  a 32-bit value that's in a 64-bit union to avoid any potential
  funkiness from that"

* tag 'io_uring-5.19-2022-07-08' of git://git.kernel.dk/linux-block:
  io_uring: explicit sqe padding for ioctl commands
This commit is contained in:
Linus Torvalds 2022-07-08 11:25:01 -07:00
parent 086ff84617 bdb2c48e4b
commit 29837019d5
2 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/io_uring.c
View File

@ -5066,7 +5066,7 @@ static int io_uring_cmd_prep(struct io_kiocb *req,
{
struct io_uring_cmd *ioucmd = &req->uring_cmd;
if (sqe->rw_flags)
if (sqe->rw_flags || sqe->__pad1)
return -EINVAL;
ioucmd->cmd = sqe->cmd;
ioucmd->cmd_op = READ_ONCE(sqe->cmd_op);

5
include/uapi/linux/io_uring.h
View File

@ -22,7 +22,10 @@ struct io_uring_sqe {
union {
__u64 off; /* offset into file */
__u64 addr2;
__u32 cmd_op;
struct {
__u32 cmd_op;
__u32 __pad1;
};
};
union {
__u64 addr; /* pointer to buffer or iovecs */