Add second version after incorporating feedback

io_uring_uninit_memory/0001-io_uring-fix-uninitialized-field-in-rw-io_kiocb.patch

@@ -0,0 +1,29 @@
+From e3b2387b7aadfeb2e21eb159b8c44110f7a61768 Mon Sep 17 00:00:00 2001
+From: Joseph Ravichandran <[email protected]>
+Date: Thu, 28 Apr 2022 11:05:04 -0400
+Subject: [PATCH] io_uring: fix uninitialized field in rw io_kiocb
+
+io_rw_init_file does not initialize kiocb->private, so when iocb_bio_iopoll
+reads kiocb->private it can contain uninitialized data.
+
+Fixes: 3e08773c3841 ("block: switch polling to be bio based")
+Signed-off-by: Joseph Ravichandran <[email protected]>
+---
+ fs/io_uring.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/fs/io_uring.c b/fs/io_uring.c
+index 7625b29153b9..a16f2d758379 100644
+--- a/fs/io_uring.c
++++ b/fs/io_uring.c
+@@ -3783,6 +3783,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode)
+ 		if (!(kiocb->ki_flags & IOCB_DIRECT) || !file->f_op->iopoll)
+ 			return -EOPNOTSUPP;
+
++		kiocb->private = NULL;
+ 		kiocb->ki_flags |= IOCB_HIPRI | IOCB_ALLOC_CACHE;
+ 		kiocb->ki_complete = io_complete_rw_iopoll;
+ 		req->iopoll_completed = 0;
+-- 
+2.25.1
+