From: Pavel Begunkov <asml.silence@gmail.com>
Date: Wed, 13 Nov 2019 21:11:01 +0000 (+0300)
Subject: io_uring: Fix getting file for non-fd opcodes
X-Git-Tag: v5.5-rc1~204^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a320e9fa1e2680116d165b9369dfa41d7cc1e1d1;p=thirdparty%2Fkernel%2Flinux.git

io_uring: Fix getting file for non-fd opcodes

For timeout requests and bunch of others io_uring tries to grab a file
with specified fd, which is usually stdin/fd=0.
Update io_op_needs_file()

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 9500780bcaeac..55f8b1d378df1 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2599,6 +2599,10 @@ static bool io_op_needs_file(const struct io_uring_sqe *sqe)
 	switch (op) {
 	case IORING_OP_NOP:
 	case IORING_OP_POLL_REMOVE:
+	case IORING_OP_TIMEOUT:
+	case IORING_OP_TIMEOUT_REMOVE:
+	case IORING_OP_ASYNC_CANCEL:
+	case IORING_OP_LINK_TIMEOUT:
 		return false;
 	default:
 		return true;